Lexus Gx Secondary Air Injection Pump Mod

Check engine light came on? Limp mode activated? 4LO light lit up? Your secondary air injection pump just took a dump. Lexus knows it eventually will. Well....thanks to Machine323, he came up with a mod that replaces your crappy OEM filter.
Here is the Amazon link to the filter i used.
www.amazon.com/dp/B003CJOTSA?...
or this K&N may work too:
www.knfilters.com/62-1370-ven...
Here is a Lexus service campaign that Acrad from ClubLexus provided:
forum.ih8mud.com/threads/oo20...

[@jcranetx66]

Wow. I had no idea. Thanks for this video Bob. I cleaned the Throttle body on my GX460 last weekend and now I know what I’m doing this weekend. Getting this filter installed ASAP.

[@vincentdemarco6374]

I did this mod on Sunday. Would have never known! Literally took me 10 minutes. You're the best, Bob!

[@GXBOB]

No Problem Vincent, enjoy!

[@Mrwonson3]

Dude Sir, why are you being so awesome? Stop being awesome. Helping people like me got no time for forums, and the likes, you’re the one stop GX guru with extra humor here and there. ❤❤

[@GXBOB]

Thanks for the kind comment Mrwonson, i agree with you about the forums and write ups since i'm a visual learner. I have so many vids in production right now that will probably take me out to 2025. Again, thanks for tuning in and hopefully you'll find one that will hurt your feelings because thats my goal.

[@terraformingcats8175]

LMAO! I love it when you threw the foam. Love your videos, Bob! Keep up the good work.

[@GXBOB]

I threw that thing so far, i might as well try out for the next Olympics.

[@doctorwgca]

@@GXBOB No Doubt. LOL!!!

[@aitch0083]

I saw your video and replaced my 2nd air injection pump filter. I couldn't believe Lexus chose to use such material as the filter when I took it out. Huge thanks to your video and God bless your manhood.

[@GXBOB]

That’s awesome Chung, hope the mod helps your GX live a long and prosperous life free of check engine lights.

[@jperry3013]

Great mod & video!! BTW, I put the outer plastic cover back on after i drilled 6 evenly spaced 3/8 holes over the edge that covers the new filter. Thanx again for the video.

[@GXBOB]

Great idea! Thanks for the tip. I put my black cover back on also but decided not to mess with it in order to pass visual inspection when i go in for a California smog check.

[@KuyaJones]

I gotta give it to you BoB, Thanks for the info & you got me doing some of your mods on mine. Keep em' coming.

[@GXBOB]

Thanks Optimist!

[@RichCinema]

Took me 5 mins. Thanks, your videos have helped me tremendously .

[@ravin747]

Did this mod today along with led interior and running boards. Looked like the previous owner changed out the foam filter, but I changed it out anyway. Thanks Bob for your Chanel

[@GXBOB]

Any time Raven! Glad to have u onboard.

[@ravin747]

@@GXBOB Bob between my wife and I we had 5 Land Rovers, a few years back I got my wife a first generation RX then a second generation RX,I was the last hold out with mine. I said when it’s time for mine to go I will go with Lexus, a GX460 I’m glad I did, I will never go back to Land Rover. They can’t hold a candle to Lexus. 👌🥃🍸🍷🧨🔥

[@brentbaker2798]

Looks like you stripped the bolt by overtightening it. Thank you for the video and the links. Much appreciated.

[@warrenlucier5796]

I have this same air pump in my 2013 Tacoma and will be performing the protective upgrade too.

[@brandonmoe99]

Thank you for the tip! Brilliant idea! I will be doing it for sure. Thanks again for sharing your experience.

[@GXBOB]

You're welcome Brandon, if you run into any issues while doing the mod, feel free to reach out to me. I come onto the comments section every day. Thanks for watching.

[@juliosdiy3206]

We have never knew anything about this issue so now i will check my tacoma and possibly on a use gx460 planning to buy.

[@cafecholonify]

Amazing! Thank you for all videos Bob.

[@GXBOB]

Thanks DeCafe! Appreciate your comment.

[@ABSScott]

Another great video from my friend Bob. Thanks 😊

[@GXBOB]

Thanks Scott. I'm only supporting another person's modification.

[@kostovmail]

Thanks, had no idea. Getting this done pronto.

[@Cocora22]

Love ALL your vids. I always learn something. Just 2 days ago I saw the one where you removed the rear left tail light. It was ULTRA helpful because I used that particular point of entry to run the fuel line ( used fuel line because it's super sturdy) to the rear differential breather. All the other videos were saying to cut a hole in the fuel compartment for access, which I did not want to do. Another one said to remove some panels under the car then find an access point under there to feed the tube and I was lazy and didn't feel like removing a ton of panels. Took off the light assembly zip tied the hose with the air breather and ran it straight down.

[@GXBOB]

Interesting……,

[@Cocora22]

@@GXBOB Another thing I'm wondering. You do a ton of things but I haven't seen you install illuminated door sills. I think it's a cool mod, but when I have looked I haven't seen anyone do it on their GX. Also when I look for the parts it's unclear if maybe the luxury trims have them and if they would actually plug and play into my Blackline edition. You also frequently say your next vehicle will also be a GX. So with that in mind what's your take on the soon to come GX 550? I'm sort of considering it, but it kills me that it won't have the V8, no KDSS, unless you go to the overtrail. Will the Adaptive Variable suspension be enough on the Luxury Plus? Would just love your take. At this point I'm thinking the Overtrail to get everything, but then no third row. I'm just all over the place on what I would pick.

[@joshze]

Thanks Bob! I bought one halfway through your video.

[@GXBOB]

You missed the second half where i took everything apart because the new filter caused my front right tires to go flat.

[@ItspronouncedAaron]

Don’t know where the hell it went. (😂 two feet in front of where you threw it). Thanks for the laugh and the awesome video.

[@didactic33]

Bob Thanks, your videos are clear, and informative, even funny sometimes, Ha.. I have a 2017 Gx460 and never looked under hood until I subscribed to your channel. Thank you.

[@GXBOB]

Dude, you have so much to do and so little time. Get started.

[@sampep6327]

This was a great, entertaining and easy to follow video! Thank you!!

[@GXBOB]

Any time Sam!

[@stewartperrault1670]

I did this MOD last week after watching this video. I used the K&N filter since I live in Vancouver B.C. Canada and the price for each filter was 1 dollar difference so I went with the K&N. I want to mention the K&N filter fits but it is tight. When finished it will be sitting against the side of the power steering fluid reservoir. Should be okay since the top of the filter is rubber and soft. You may have to squeeze and push things to get the cap on correctly with the K&N, but it does work. Thanks again ! Your videos are so helpful and appreciated! I share them with all my fellow GX owners locally or I recommend they subscribe.

[@GXBOB]

Ugh... Stewart. Please note that all my shitty Canada comments were prior to realizing I had Canadian viewers. My ignorance finally accepted that our neighbors from the North have internet. I promise no more shitty Canada comments. Thank you for watching.

[@GXBOB]

I think you bought the 2.375” height one. K&N makes a 1.5” height one that may have worked better. Here if the link: K&N Vent Air Filter/ Breather: High Performance, Premium, Washable, Replacement Engine Filter: Flange Diameter: 1 In, Filter Height: 1.5 In, Flange Length: 0.625 In, Shape: Breather, 62-1370 , Black www.amazon.com/dp/B00029WXTA/ref=cm_sw_r_cp_api_glt_fabc_XM0EE2J3EMZWT8YVK0E3

[@jimilianhernandez8074]

Is this not an issue if it does touch the power steering reservoir?

[@GXBOB]

@@jimilianhernandez8074 not at all as the filter is encapsulated by rubber. It’s anything all it does is act as a support.

[@GXBOB]

@@jimilianhernandez8074If you bought the correct size it would not touch the reservoir at all. There is actually a lot of play to move it in and out of the SAIS assembly. In the event that u did purchase one that was longer than usual, it would still not affect it since the top of the breather filter is made out of rubber/plastic. The reservoir would just act as a support. The breather is super lightweight and won't cause vibration scuffing.

[@brad627]

Already had mine fail back in 2018 on my 2012 premium. Luckily Lexus fixed it under the TSB for free but still fixed it with the foam. Just did this mod so it wouldn’t happen a second time. Thanks for all of your videos!

[@GXBOB]

Glad they were helpful! 😊

[@Ray-ks1xp]

Thanks for the information, I just ordered it from amazon with your link, my 460 just went over 155,000.

[@GXBOB]

Wow, you got another 145k before you kinda sorta have to worry. Sorta kinda.

[@fb7072]

Thanks for the great video and mod! I will be doing this on my 2009 GX470.

[@GXBOB]

Your 470 is going to require a bit more work as it’s not in the same open location as the 460. Just fyi.

[@enriquecarrillo3909]

Nice job Bob, thanks again.

[@GXBOB]

Thanks Enrique, much appreciated.

[@sparklander]

Thanks again for saving us thousands of $$$. Just ordered the filter and will do the mod shortly.

[@GXBOB]

Just remember to make sure the flange diameter is 1". If you are able to find a different type of clamp, it would be recommended. I hear people using this metal clamp tighten it too tight and it wears/chafes down the black plastic over time.

[@JoeQuartararo]

Goter done thanks for the assist Bob!

[@GXBOB]

Thanks Joe

[@dullesdiegue8709]

Thanks Bob, great video as always, your the best.....

[@vikg3228]

I have been dealing with this on a 2005 GX470 with failed SAI system faults for years. Dealer said nothing about a recall and I didn’t want to pay the $3k. Bought a cheap ODB computer to reset the faults every so often. A third party computer bypass doesn’t offer permanent results. Glad I came across this video. Such a simple solution. Shocked Toyota would make such a simple to avoid design error.

[@GXBOB]

I’ve always wanted to attempt this on a GX470. Been looking for prices to drop so I can pick up a hobby vehicle to mess with. Thanks for the comment.

[@M5_Sonu]

Sweet! Ordered, but it’s now back-ordered lol.. Thanks man! Great video, as always!! 👌

[@GXBOB]

Damn back ordered too???? Jeez. You’re not wanting the $30 K&N one? 😁

[@M5_Sonu]

@@GXBOB lol I can wait a week and save $12 ..That said, I’ll be checking the condition of that POS foam in the am! ( 2018 w/44k )

[@grn9209]

Another great video with amazing recommendation!👏🏼👏🏼👏🏼👏🏼

[@GXBOB]

Thanks Grn9209, much appreciated.

[@cblankenship3018]

Great video Bob. Happened to my 07 Tundra. It has two of these. It also has a really neat computer that automatically puts the truck in a “limp mode.” so you can’t ignore the problem. I think the engine works fine if you can bypass this pollution item/device, but you also have to “trick” the computer into thinking everything it is still working. I didn’t want to use the bypass/computer trick kits though. Mine went into limp mode on a hill, and my engine light went on. This would be really dangerous if you were on a long uphill in the middle of nowhere with semi’s passing you at night. The Tundra will only go about 30mph in this limping uphill situation. Can’t believe Toyota is allowed to have a non-emergency system that does this to you while driving? My mechanic did a computer reset just to get me home until my parts arrived and the engine ran perfectly on the way home. It went back into limp again the next time I started it while I was on my way back to my mechanic again for the repair. I first went to the dealer for this “service” and they acted surprised like it almost never happens, then I read the recalls and forums telling how chronic the problem is. I complained to the dealer and Toyota Corporate for recall repair, but both said mine was well out of warranty at 90,000 miles because of age. $3000 from the dealer to replace the whole “system” only to maybe have the problem happening again. Local Japanese auto mechanic fixed it for $1200 with both new OEM pumps even though only one was bad. Will be checking your simple mod out on my 04 GX470. No problems yet at 170,000, but definitely worth $30 not to have this happen again. Is it the same part and easy fix for the 04 GX470? Another way to avoid the problem is to keep your car out of rainy wet climate…like Washington State where I live! Thanks again for your great video’s. Every Toyota owner should subscribe to your channel just for this video alone!

[@GXBOB]

Hey Blankenship, thanks for comment. This has happened on both my 470 and 460. I was only able to do the mod on my 460 since it was out in the open and took as little as 15 minutes to do. I was able to drop off my 2008 GX470 back in the days at the dealership and they took care of the problem noting the recall was a popular item at the time (and it still is). The 470, from what i heard and read on the forums, is a lot more work involved as you have to start removing manifolds, etc...I planned to do a video for the 470 right before all these vehicle prices started to skyrocket. Because of that, i never was able to pick up a 470 to tinker around with as that was my original plan. Again, thanks for tuning in Blankenship and i will eventually get around to picking another 2008 up some time in the near future.

[@juliosdiy3206]

My friend has a gen 1 tundra and went through some issues relating to not starting and limp mode so i will tell him about this issue.

[@docholiday9562]

Thanks Bob…just ordered the filter you used…arrives Saturday, then I’ll do that mod too!

[@GXBOB]

what the hell???? This video was uploaded in 1983 and you're barely doing it now???

[@docholiday9562]

@@GXBOB lol. It’s a year-old video. But yeah, I’m just catching up to all of your videos, to see what I need to do..lol. I won’t be doing the LED light bar though…too afraid to take off the grill etc.

[@docholiday9562]

@@GXBOB now we need a mod to boost the MPGs…that Premium gas is a wee bit high…lol

[@seanconroy3567]

I know what I’ll be doing tomorrow on my 2020 GX. Thank you!

[@gilbertrios5283]

Damn Bob that was awesome! Simple and quick preventive mod! Oh and haahaahaa when you threw away the sponge filter! 🤣🤣🤣

[@GXBOB]

That was all muscle Gilbert...all muscle.

[@gilbertrios5283]

@@GXBOB is it a big deal if the outer cover won't go back on? The filter will be more exposed to the elements and will probably get wet... Did you leave your cover off or does it fit with the breather filter installed?

[@H3LLZ]

I will be doing mine asap Bob thanks again bud 👍

[@GXBOB]

good deal Hellz, less than 15 minutes if you're handy with a screwdriver. 3 hours if you're an idiot.

[@valdaviper1]

Hey Bob. Enjoyed the video and the instructions, thank you. One question as I just finished this mod yesterday, do you put the black cover back on top hiding the filter? I see you mention that people in California should but I didn’t understand if you can drive with it on long term. Seems like it would cover half the filter with the foam glued underneath the cover.

[@GXBOB]

You have to remember that prior to this mod, it wasn't an open-air system. Your Pump had a small dome cap that only had small slots allowing air to enter. Now, with this mod, if you add the black housing back on, your Uni filter is exposed to the entire bottom half with is much more than the amount of air the original cap was allowed in. So whether you install the black housing back on or not for the long term isn't really detrimental to its function. You can do what some folks did by drilling air holes into the black housing to allow more air in or just leave it off. In California, we have to undergo a visual inspection for emissions to renew our registration so that housing needs to remain "oem", hence why i left it alone.

[@altkoin]

I would never gave known this! God bless you Bob!!

[@GXBOB]

Glad to be of service! 🍷

[@davidarchibald3552]

Good stuff Bob thanks!

[@crxbb9506]

Great video / preventative maintenance tip. Thank you

[@GXBOB]

You wouldn't happen to own a Honda CRX do you?

[@gipstetz6720]

Thanks for posting Bob. Excellent vid as Always. Wondering what's your opinion...thoughts on a AGM battery for the GX.

[@GXBOB]

I've looked into AGM batteries a year ago. I've taken some considerations into the length of time i own my GX, the cost, the advantages, and the disadvantages of buying one. If i were to get a new battery for overall value and performance i would stick with a Gel battery over traditional and AGM. Because, even though AGM is built to run and sustain a lot of your electrical toys on the GX, the advantages don't justify the cost in my opinion. My car is in southern California with perfect weather year round, i don't have a 5 amplifiers, 8 subwoofers, and a wheel chair lift equipped in my GX. My lower cost interstate battery upgraded from 24F to 27F with more CCA has a warranty if it should fail on me. I also have AAA. I DO NOT want to throw in random aftermarket diodes to accommodate a AGM battery voltage requirements into my car because some dudes "figured" it out. My batteries only purpose is to start the car and nothing else. Soooo......the AGM battery doesn't make sense to me but to each their own.

[@gipstetz6720]

@@GXBOB Thanks GXBob. Great...info and insights. Super helpful as usual.

[@kayakuprising5914]

I love the way the foam fell right at your feet, and you didn't see it LOL

[@GXBOB]

Thanks, i've been working out. 😁

[@edfairley8347]

Hey dude.i forgot to tell you I made this mod several months ago and it was super easy. I try to avoid things that happened to others with cars. Especially when it causes a real pain in the arse!

[@GXBOB]

Did you have any issues with fitment? or rubbing against the power steering reservoir?

[@edfairley8347]

@@GXBOB No. Not at all. Perfect fit with no modifications other than what you did.

[@JasonSmith-pc6kr]

Thanks for the tip! My first GX 460, I will defiantly do this.

[@GXBOB]

What year GX did you buy?

[@JasonSmith-pc6kr]

@@GXBOB 2016, currently with 82,000 miles

[@GXBOB]

@@JasonSmith-pc6kr Sounds about right. I have a 2017 with the same mileage.

[@JasonSmith-pc6kr]

@@GXBOB I've had it a little over a year, put about 20,000 miles on it, so far so good. My wife has a 2010 rx350 for about 6 years and now with 135,000 miles, and has been a great car, so I bought a Lexus.

[@MichaelChen-kf2vd]

@@GXBOB Hi Bob. I have a 2015 GX460 with only 52,000 miles. Do you recommend doing it now or waiting for running more on it?

[@UAjoel]

Thanks, bob -- I implemented this mod, straightforward with your instructions. I first tried the K&N filter 62-1410, but it's too long and interferes with the PS reservoir, perhaps delete the 62-1410 amazon link from the video description. Second try with the UNI UP-107 went well.

[@GXBOB]

Thanks, i just deleted it. 👍

[@IbrahimAli-xe9iz]

Watta great video uncle Bob. THANKS A LOT!!!

[@GXBOB]

uncle? I think i might be younger than you Ibrahim. (=

[@IbrahimAli-xe9iz]

@@GXBOB I am 34 :)

[@garng3217]

Hi Bob, my 2015 GX460 got 94000KM lucky no engine light came on yet! will do up the mod, Thanks Gar

[@GXBOB]

Best mod you'll ever do. Thanks for watching.

[@ejcheck]

I have a '22 I just got in April. I called the dealer about this and the tech told me he hadn't seen this in years. Me being me I had to open the unit and sure enough, it still had the foam. I decided to replace it. I got the K&N, they both measure the same. The fit was very tight against the PS reservoir. I cut the units rubber tube flush with the clamp and I was able to get it on Thanks

[@GXBOB]

A 22? You got a long way to go before anything goes bad on your GX, but nonetheless, great job for finding a "fix" to make it work. Not all products and installs come out perfect. A little elbow grease and an hour on a beautiful saturday is all it takes to unwind. 👍

[@ejcheck]

@@GXBOB I realize it doesn't happen over night but foam degradation is constant until it falls apart. So, why not replace while it is on my mind. And it is cheaper than a replacement pump

[@bogieman101]

@@ejcheck I would like to think they changed the foam type. It is insane to keep using the same design all these years. That said, I get my 2023 next week, and just ordered the new filter.....

[@jackiesonnygarcia5164]

Thank you for the great information. My new fter just came and I put it in today.

[@GXBOB]

Did you go for a test drive? I promise you, you're gonna feel the better acceleration response.

[@jackiesonnygarcia5164]

It's my wife's car but, I'm going get in and a go. I dig your videos. Its entertaining and informative. My next add on is the new front end. I'm going to upgrade it to the 2020 like yours.

[@GXBOB]

@@jackiesonnygarcia5164 sweet! it will be money well spent. I guarantee it.

[@TopgearFTW]

I added a 3" outerwears pre filter to prevent clogs too.

[@GXBOB]

K&N makes two different size breathers. If the 3" one was too snug and rubbed up against the power steering reservoir, there is a 1.5" height one that fits just as well with a 1" diameter flange.

[@itsjustbrian_]

great videos. question: is this mod CA smog compliant? I know usually anything visually inspected with smog components will get denied automatically. thanks in advance.

[@GXBOB]

There is a large black plastic cover that goes over the entire assembly. The piece at the beginning of my video. When u go in for a smog check, make sure you put back that large plastic cover. It hides the filter element. completely. Also make sure you buy the filter that has the black housing and not the chrome one. The chrome one will stick out during inspection.

[@schylersmith1484]

We just picked up at 2012 GX with 90k on it. Will be doing this ASAP! Thanks Bob.

[@GXBOB]

There’s a few things you should consider since it’s creeping up to the 100k mark. EGR valve, PCV valve, transmission fluid, differential, transfer case, timing belt, and water pump. Fun stuff!

[@josefastor5825]

I have 34,000 on my 2016 I am considering it, does Lexus sell the air filter

[@gman7839]

Timing belt?

[@Celce09]

Thank you!!! Very helpful

[@philn9205]

Thanks Bob! I just added this little mod to my GX

[@GXBOB]

Just out of curiosity, how many miles do you have on your truck?

[@philn9205]

@@GXBOB about 340 miles 😂 2023 white black line. Fuggin awesome truck

[@vineet.gupta.82]

QQ for you Bob. The pastic cover does not need to be installed after replacing the filter right. i tired and it did not fit. Just checking to make sure

[@andresjimeno868]

Hi Bob, just bought a 2012 gx 460. Few weeks after I bought it the check engine light and 4Lo came on. Also I have a track off message on the messages. The shop I bought it from has been fantastic and they have done everything in their power to make it right. The changed solenoids and changes a much of things. Lights went off and a month later all of them came back on. Saw this video and I tried looking into the secondary air filter but I can tell it has already been changed. Any recommendations on what to do next??? Thank you, love the Chanel.

[@brooklynkid182]

Sounds like it’s the transfer case accuator

[@franciscoperez6356]

Thanks for the information & instructions 👍🏼

[@GXBOB]

Thanks for watching Francisco!

[@212caboose]

Excellent vid! Filter ordered!

[@GXBOB]

All year GX470 and GX460 has this assembly, but just different locations. The 2010 and up should be relevant to my video. Right beside the power steering reservoir. You can't miss it.

[@erikhaw7313]

Whoa!! I had no idea. Thanks for sharing!!

[@GXBOB]

Before youtube became mainstream, i did what everybody else did. I did the walk of shame to the dealership.

[@DrWho-Tardis]

I just came across your channel. I’m thinking of buying a used Gx 460 and have been watching several videos on this vehicle. Your video I have bookmarked (along with the part from Amazon). Question: did you replace the other filter next to this part in your GX?

[@GXBOB]

the other filter next to this part? Are u referring to the air filter. Check my video library, i did do a Kand N drop in filter install.

[@STha-ct5xo]

I might have missed it, but will this 1in opening filter fit on the 470?

[@coryhoang3736]

Hey Bob, thanks for the useful mod. Did you put back the plastic cover on top of the pump housing that was popped out first after you installed the new filter ?

[@GXBOB]

I put it back on for a smog check. It requires you pass visual inspection. After it was done I take it off for optimal air flow. It adds another 180hp.

[@Builtitlikelegos]

Great explanation and great information!! Hope you didn't strip the plastic threads when you gunned the bolt back on..

[@GXBOB]

I did strip it. Good thing i have a life time supply of zip ties

[@AlphardV55WR35]

THX Bob, will do for my 2016

[@GXBOB]

Awesome. Just make sure you place the plastic black cover back on when you go in for your smog check. They do a visual inspection.

[@tomsoir]

Hi Bob! First off all I watched all you Videos regarding GX. My next mod will be headlights + grill. Just did this update with the same component and exactly as you did in your video! Thank you so much, Bob. Quick question: now, after turning off my car (GX 2015), I can hear some strange high tone sound for a few seconds under the hood. It sounds like this pump is trying to suck the air through this filter with the force or maybe normally but this filter makes it. Do you have the same?

[@GXBOB]

After switching out my engine air filter with a K&N, i also get the same air hiss. Same thing with the secondary pump filter. The difference in filter elements is what creates that sound. You also hear a little of the aftermath of the suction after the engine is off is the vacuum it created also coming to a dead stop. You’re going to notice a difference in performance as u would with any filter that allows more air into your system. If you want the sound to be less obvious, try putting the black plastic cover back on your secondary air pump assembly. I left mine off as shown in the video.

[@tomsoir]

Thanks so much again for advice, I just took a ride and everything seems great! No odd sound or anything like that. 👍👍👍

[@garytruong8497]

I just done my gx 2023 today I drive feel more power

[@gearmonkey5904]

Thank you for doing and sharing this video

[@GXBOB]

It was a pleasure Gear Monkey!

[@devanrogers3133]

Many thanks on how to do this! I did this last weekend but I'm wondering if that whine you hear on the cold start is normal?? I'm getting mixed answers on the forums. Some say it's normal and some say that it means it's going to fail in the future.....Should I just do the bypass altogether or is that noise truly normal. On my BMW that sound did indeed get louder before it failed. Mine isn't getting louder but I just don't ever want my truck to go in limp mode or get straned somewhere.

[@GXBOB]

The whine is due to the suction of the external filtration system which is normal. It means it’s working. Anytime you add a K&N type filter you’ll get that sound.

[@darrenhuynh2851]

Just got it done today everything works perfect just wondering because after I put that vent air filter in the cap cover not gonna fit no more so it’s the same to you & everybody? Thanks a lot for the details video Bob & have a good one ☝️

[@GXBOB]

The black cover does fit. You only need to put it on if you take your vehicle in for a smog check otherwise you’ll fail the visual inspection.

[@brianshepard2237]

Appreciate the video for this mod. Unfortunately, the UNI filter is difficult to find/expensive these days. I ordered the K&N filter linked in the video comments, but it's too tall. It hits the power steering reservoir on my '15 GX460 preventing the SAIS housing from closing. Guess I'll look into one of the generic oiled filters that are shorter than the K&N.

[@GXBOB]

the K&N breather elements do come in various dimensions. You might want to look at a shorter one with 1.5" filter height. The black housing doesn't need to be reinstalled except when u need to go in for a visual inspection smog check. Otherwise, leave it off.

[@brianshepard2237]

@@GXBOB I meant the top half of the housing that screws back on (where the filter attaches), not the cover. The 62-1410 is ~2.4" tall and it's too big to be used as a SAIS filter. The 62-1370 is 1.5" tall and would probably work.

[@bilsanbhatti2275]

Mine inject filter was little bit big too but eventually fits but the top cover I’m not able to fit on it because of the filter size please let me know how is working on your gx. Thanks

[@bilsanbhatti2275]

Hey bob I just replaced the oem with k&n air filter that has oil in it would that be dangerous for my gx. Please reply.

[@user-uo4yv2or5q]

Thanks, Bob 👍

[@GXBOB]

Anytime my friend!

[@FU29988]

Not sure how I missed this vid, thanks Bob! 👏🙏 By the way, are you going to do a radiator swap anytime soon? Considering replacing mine, small leak at top hose, replaced hose and noticed plastic brittle and a little craked. I think moisture coming from there even with new hose and cap. But I don’t want to go to the stealership to replace radiator and get ripped.

[@GXBOB]

I normally don't do anything unless it's broken. You never know, the truck is past 100k already.

[@FU29988]

@@GXBOB 👍Just hoping its not the coolant valley leak thing Ive been hearing about

[@damienhealy6850]

Hi Bob. Your videos are great. You have great energy. I just bought a 2021 GX. Is this still an issue on the 2021 year? surely they had it sorted out by 2021? Just curious because I will do this once its out of warranty otherwise.

[@scarter176]

NO. I just did this on my 2022 460

[@damienhealy6850]

@@scarter176 Thank you Steve. I'm surprised Toyota would allow this component to be still installed on late GX's and not simply revise it.

[@scarter176]

Pennies chasing dollars

[@JunjunDing]

Hi Bob, I am trying to do similar mod to my 2010 Sequoia. I'm not sure if the system is similar or not. It seems the air intake is below the engine bay. It probably needs an extension hose. Thanks for the video!

[@GXBOB]

kzbin.info/www/bejne/f4SUaJ-vmdqmf6c

[@subfightersandman]

Hi Bob, I just did this mod thanks to your video! Once question, with that new filter on, the external cover will no longer fit. I noticed you didn't show this part going back on in your video. Did you have the same experience? I am assuming there is no issue leaving it off, but just want to be sure. Thanks again, your videos are super helpful

[@GXBOB]

I did snap the black cover back on without any issues. You won’t need it on while driving but you’ll need it when you go in for a smog check. They do visual inspections for modifications in California.

[@subfightersandman]

@@GXBOB interesting, I had to get the K an N filter that you linked to below your video, instead of the one you used. Amazon doesn't sell the uni anymore. Maybe its slightly bigger , because there is no way the opening of the cover will fit it. If the cover is not needed while driving I should be good then, I live in AL they don't do any sort of vehicle inspections here haha. Thanks again

[@GXBOB]

@@subfightersandman you’re good to go then! No cover needed really. Just keep an eye on the filter to see if it needs cleaning or dusting off.

[@mikemc330]

Great video.

[@mnkmarr5]

Great video Bob! Unfortunately, this just happened with my 2018 GX460. The service bulletin doesn't directly speak to this model year so I presume I'll have to pay for the fix and then do your mod to keep it from happening in the future. Live and learn.

[@GXBOB]

You’d be surprised what the dealer would do if you go in kicking and screaming

[@bogieman101]

To be clear, you had a failure because the foam filter disintegrated? Just asking because the foam type was supposed to be upgraded after the 2013 recall.

[@AngelRivera-wp9bg]

Excellent

[@frpAIOF]

Hey Bob! Love your videos. I took the one torque screw off but the housing is firmly stuck in place. Any tips? It’s below freezing outside but honestly I don’t think that’s the reason. I tried prying it with the flathead screwdriver but it won’t budge

[@GXBOB]

I’m not trying to be funny but have you tried the power of prayer? It works in some instances except when you’re trying to save your marriage.

[@jonmohoney7574]

Hey Bob - I was towing today and when I accelerated on the on ramp, I threw the 4low trac off check engine trifecta. I also had this issue when I turned on my pedal commander when towing a boat. Could this mod prevent this in future? Also, I wanted to ask you what service I should do? I bought at 55k miles, at 97k now and have only done oil changes. Thanks my man! Much love from Florida

[@GXBOB]

your lights popping on temporarily by hitting the gas pedal can mean anything...seriously. The mod is only preventative maintenance from your sais taking a dump in the future if it hasn't already. Your mileage is the same as mine right now and i'm about to replace all 4 rotors and brake pads. I was also thinking about replacing all 8 spark plugs too.

[@user-qn5jp3sn6g]

Great video, just the explanation I was looking for. My engine/dash lights on my '07 GX470 recently came on, I brought to Lexus dealer (Maplewood MN), they charged $210 for 4 minute plug-in "diagnostic" and decreed the secondary air injector pump and valves all need to be replaced, for $3200. My question: if the engine light is already on, is the injector already plugged/shot? Will just changing out the filter as you describe still help or do I now need to replace whole assembly? Thank you!

[@GXBOB]

The reason your lights are on is because there is no more filter. Your filter is already disintegrated and was sucked up in your SAIS system. My mod is for preventative maintenance before the lights come on…not after. The good thing is you can pick up an SAIS on eBay and replace it yourself. www.ebay.com/itm/235436784129?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=GdLsfWakTTS&sssrc=4429486&ssuid=37nDDIJTS6a&var=&widget_ver=artemis&media=COPY

[@Nahhmah]

Thanks, GXBob, I did this today to my GX.

[@GXBOB]

You're welcome Will, you can always snap your black housing back on. It helps when u have to take your truck in for smog check to pass visual inspection.

[@Nahhmah]

@@GXBOB I did that already :)

[@wardhand]

I just did this mod on my 2022 GX . Your videos are great. Maybe I should send you a tip.

[@GXBOB]

The going rate is 25% in California

[@Salih-Al-Saffar]

❤ Thank you so much for the informative video

[@GXBOB]

You are so welcome!

[@thomasharris5151]

Great simple mod! Will this void my warranty on our CPO 2016 GX..?

[@GXBOB]

Not sure how it would but it’s literally 10 minutes to put it back to stock if you want to bring your suv in to the dealer for whatever reason.

[@thorsky2754]

I'm not sure if it's different on the earlier years, but my 2017, it was easier just to take the cap off with that one torx bolt and then just pop off that little nozzle cap on the end. Just in case somebody wants to preserve it

[@GXBOB]

Hey Thorsky, i believe thats what i did. One torx on the top and the entire top half comes off. The plastic nozzle cap can be taken prior to or after the housing comes off. I did slap the nozzle cap end back on for smog checks.

[@mendegorgievski4645]

Thank you very much very helpful video and knowledge

[@GXBOB]

Yes I think this is the only video where I didn’t offend anyone.

[@RubiconSS26]

Bob for President - Dude has our back.

[@GXBOB]

unless the other person is holding a weapon, then i'm running first.

[@luciousdrea18]

Just ordered one thanks!

[@GXBOB]

You can leave the black plastic cap back on if u choose, i did.

[@shmelvin5422]

Did the mod plus cut back the top cover so it fits perfectly. The only thing is the foam filter on my 2016 looks and feels Like brand new. Zero signs of degradation. But! better safe than sorry.

[@GXBOB]

Environment, atmosphere, etc all plays a part in the premature wear. You’re probably living in ideal conditions. 🍷

[@rolandoleybag8577]

Hey BOB, how about the cover, do you need to put it back? Or not? The filter gonna be expose? I am planning to do this mods. Thank you for your video. Very informative & big help to every guy who has a Lexus & Toyota car.👋👋👍👍

[@GXBOB]

You can put the cover back on when you do smog check, but i just leave the cover off for more air flow.

[@rolandoleybag8577]

Thanks bro. Cheers!!👍👍👋😊

[@4bvenom733]

Thanks for the video....just found out about this....is it safe to use k&n red spray and wash n clean out the stuck dirt

[@GXBOB]

Yes it’s ok to use it but i feel is a waste of money. Simple running water and air dry is fine

[@roylobo5643]

Great videos as always. This is a life saver. Will this fix the p2445 error on a 2014 gx 460. I disconnected the hose when changing the power steering fluid like us suggested in your video. But forgot to connect the hose back in my rush. After driving it for a while I got the check engine light on, the p2445 error and the car went limp-little power.

[@GXBOB]

Oooooh………. Reconnect, erase the check engine light, and drive around for a bit to see if it went away.

[@roylobo5643]

Tried that. But that did not work. Do you have a recommendation for a replacement. Unfortunately, I have to replace mine. @@GXBOB

[@johnkent9019]

Uncle Bob I assume you don't put the "two hand" plastic cover back on over the new K&N type filter? Seems like if you do it significantly would restrict air flow. Or is it important and should I drill 3/8 in holes in the filter area as another commentor mentioned?

[@GXBOB]

I left it off and reinstalled it to pass smog visual inspection

[@alte9751]

Do newer GX's still have this issue or has it been rectified from the factory? Just purchased a new one last month and wonder if this mod would still be worth it?

[@jaybui2239]

I’m looking to buy a 2023 GX soon, did you check to see if Lexus corrected it?

[@darrenhuynh2851]

Cool thanks Bob 👍

[@GXBOB]

Any time Darren.

[@AG4runner]

Just a note for anyone doing this . The uni filter up-107 is a dry filter. The k&n uses oil

[@GXBOB]

thank you Matt.

[@Russellrks]

Do you have to oil this filter or use it dry?

[@AG4runner]

@@Russellrks no

[@davidwong4555]

Thanks for the tip!! How often do you change the K&N filter?

[@GXBOB]

We don't change the filter. We visually check it for debris, remove it, flow running water through it, let it air dry, then reinstall.

[@davidwong4555]

@@GXBOB Thank you for the quick response, do you also put the cover back on? Because it looks like it will block the air flow