Step-by-step Tuning Device Install (Apexi NEO into GS400)

[@JCDUDECANTU]

You honestly are my only source of quality content for the Lexus GS platform! Can't wait to order this and do it myself

[@bosshognit]

Jord_Cannot FACTS MAN

[@dabeztmashups2425]

That's kinda facts. The rest I know what to do but our computers are so encrypted that putting an afc is so hard but this guy did it with ease

[@Hilife23]

🧐 I see things are getting very serious over on this channel. 👍🏾 dropped so many gems in this vid. Nice work!

[@ForwardMomentum]

Rohland Moland thank you so much!

[@Cody_4]

Just came across your channel, nice GS400. I managed to pick up a 99 model last year and love it. Glad I came across your channel 👍✌️

[@ForwardMomentum]

I’m glad you found the channel. Welcome to the GS family!

[@NateSpring]

I absolutely love that the AFC's are still being used these days. I've had them on many cars over the years and they've been great 👍 I recently had one on my turbo 1UZ Datsun 280z.

[@smitty.c]

thats all you used to tune it?

[@TeamRebe]

Just got a 2005 gs430 so will be watching a lot of your videos! Already installed a 12 sub in the trunk but that grabber tool would've saved me so much time!!! Im def ordering one off amazon now lol

[@danmystro]

Really appreciate the content, I actually used this video to help me install a Neo on my 2000 LS400 UK spec, pinouts were a pain, half the pins were JDM and the other were US. Massive thanks!

[@criswireless1976]

Thank you for this! I bought one of these for my Starion ESI-R widebody and I didn't know how to tune it, so I rewired my car to a Corvette MAF translator. I have a 1994 (titled as a 1995) Lexus SC400, that I plan on running this on now..

[@ethansmith8442]

How did it go? Im thinking of doing this to my 93 sc4

[@will_gs4004]

Awesome, been waiting on this vid! Keep em coming!

[@yordancarreno5806]

Thank you ! I just made my own intake system , now I just need a tuner let us know how it works !

[@Ghost-Of-Kyiv-]

Gs 400 for life

[@Ventaqe]

Keep them coming!

[@bosshognit]

VintageWill please

[@4wdaddict41]

Great gs400 video content keep making more gs videos!

[@dabeztmashups2425]

That's a beautiful install.

[@ForwardMomentum]

DaBeztMashups thanks. Glad you liked it!

[@kevinwashington7311]

Good job with the professional install along with information!

[@frankwp747]

Keep the Videos coming

[@nuribell1]

Hi from NY, just wondering if you have any recommendations for shocks and struts, I have a 99 GS400 in very good condition. I'd like to keep it as stock as possible other than getting 18" wheels and a paint correct and ceramic coat- Thanks very much, subscribed and a fan-

[@ForwardMomentum]

Hi - KYB GR2’s are great. 👍

[@almc-wi5vo]

Sr. I installed my APEXI NEO back in 2007. At first it ran exceptionally well. Then it kind of fell off in performance. Looking on the net for answers was not really helping. Until I saw your post. Great, it was a question of going beck to the basics. I'm turbo charging my 1997 Toyota RAV4, with the 3SFE engine. Will the Apexi work with a TURBO engine? A subscriber

[@ForwardMomentum]

Hello- I’m glad I could help in some way. The NEO will work with turbo applications. The problem is timing. Since it does not control timing, you’d be better off with a piggyback or standalone that has timing control. Sounds like a cool project. Would love to see more. Are you on IG?

[@user-gb1ne5jj8v]

Do you know how extremely talented you are bro ??? How much power can you really get from this set up ?

[@ForwardMomentum]

If you’re being serious, thank you. It’s hard to tell these days. There are some haters out there after all. Power gains depend on mods. I have seen 25-30 whp and nearly 40 TQ, but the mod list was extensive and included headers. In my case with basically exhaust, I’m pulling 11% fuel out of the map in places, just to hit 12.3 AFR. That goes to show you how rich these run normally. That said, I’m guessing I added 10whp and 15 TQ in places on my power band, but I need to dyno to be sure. I hit 5.1 0-60 one day which would back up my claims. I hope that helps!

[@user-gb1ne5jj8v]

Forward Momentum wow so you was able to do the headers my Lexus IS currently at almost 250k miles and I mean all maintenance engine wise has been done I upgraded to NGK spark plugs , upgraded the trans fluid also plus cooler , also timing belt radiator change plus upper and lower hoses plus diff oil change everything yiu can imagine just about I may change the torque converter to a high stall from dragon something .com it’s said to add like 50 extra horsepower but before I do that I might just 2JZ swap it completely for like 7k

[@ForwardMomentum]

No, I haven’t done headers. However, I have seen dyno numbers of the increased power with headers and an AFC though. Pretty awesome. I’ll get headers someday!

[@user-gb1ne5jj8v]

Forward Momentum the torque converter alone with a bigger transmission cooler will make a very noticeable difference

[@ForwardMomentum]

I have the trans cooler. I have heard good things about the TC, although some say the 2800 stall is annoying (I have no idea if that’s true).

[@eduardoespana5868]

Great content, do you think that these instrucions will work on a Gs300 ?

[@ForwardMomentum]

Thanks! Similar, but the wiring pinouts are different of course.

[@dabeztmashups2425]

What a legend

[@UNDERFUNDEDGARAGE]

Nice work!!

[@FAKEGSF]

Nice build, curious as to what your goals for the car are? Those 3rd gen GS wheels are very heavy, could definitely improve power and MPG by shedding 40+ lbs of unsprung weight.

[@ForwardMomentum]

Pretty sure headers, manual swap and SC’r are possible future mods. Totally agree, these wheels are pretty heavy. Some light 17’s would liven it up. My diff swap really helped though.

[@FAKEGSF]

@@ForwardMomentum Awesome! I chose the Borla proXS mufflers thanks to your videos, I can't wait to install them. I've got PPE headers, and a JoeZ midpipe to install on my GS460 as well.

[@taintedsasquatch398]

Just an FYI if no one knew, the 5 lug mustang wheels are exact bolt pattern and center bore. I picked up a set of 94 cobra 5 spoke alloy wheels 17x10.5 315/35ZR17 rear, 17x9 245/45R17 front vs my stock GS430 6 spoke 16” they are lighter wider and better looking.

[@toyotadude6771]

@@taintedsasquatch398 did you notice a difference around town, like taking off from stoplights?

[@875daily]

Just curious how you have the steering wheel radio control module? I thought that was only on the 430 model? Did you add that? I can’t get over how clean your GS is.

[@ForwardMomentum]

Thanks. It’s actually the orig car phone. It still works (no calls though).

[@875daily]

Forward Momentum lol. Yea they used to come with phones in the center console.

[@ForwardMomentum]

Yeah mine still makes that “90’s” carphone sound on startup. Pretty funny.

[@deeptech815]

Is 4 wires all I need? I’m going turbo and also have a ape I SAFC II

[@ForwardMomentum]

If you have a 400 the video covers it. 👍

[@nicwithags6182]

Getting this installed in the car rn after tossing in my 330cc vvti 1j injectors curious on if you needed to update/flash yours before installing it or its fine with the karman sensors on our cars

[@ForwardMomentum]

GS400 ECU can’t be flashed. The Apexi NEO controls the extra fuel from your 330’s. Without it the car will run crazy rich. Be sure to adjust the fuel trims as well using a data logger and NEO “Lo” maps. Open Loop uses Hi maps. I have newer episodes explaining this in greater detail in my supercharger series. 👍

[@nicwithags6182]

Im sorry I meant the neo apexi needing to be updated/ flashed the shop i have installing it is saying it may not function properly because its and outdated version I tried to send you pictures on ig im just not sure if they went through.

[@ForwardMomentum]

Oh gotcha. It will still work. My friend uses the previous Apexi AFC (old style) with no issues.

[@stepbro1305]

I'm picking up my 2000 GS400 Saturday, "It was owned by a gearhead like me and he works at a shop so it's been well taken care of" How far Can I safely push it stock using ECU tune without it killing itself?

[@ForwardMomentum]

Are you asking how far you can lean out the AFR? You can’t tune this ECU; you can only piggyback it and manipulate signals (fuel control). I would stick to 12.5-13.0 AFR if you get a NEO and AFR gauge to street tune it. In all actuality though, I’d probably save my money and just manual swap it later on. I tried just about everything “easy” on mine and nothing really adds enough power to be noticed. The diff swap and manual swap are the exception. Those I could feel (but they don’t really add power). Next is the supercharger series. That’s the order I would go in to make the car quicker.

[@AdinSLaboy]

I have a question were did o should mount and wire a widebang

[@ForwardMomentum]

Installing an AEM UEGO wideband AFR sensor WITHOUT a welder! (Lexus GS400 shown) kzbin.info/www/bejne/fmK4nYJpbpudgZY

[@MrMalzers]

Taken from fb post on this video. Can you comment? "The Lexus computer is too smart for a piggy back and will lean itself right back out in two days. Safc’s work great on several other applications, but not a later model (VVTI) LEXUS ecu. If you have a wideband you will see it lean itself back out in 2 days. So you’ll add more “fuel” to the tune, and it will lean itself out again, agin and again until you’re at +50% max on the neo. Then if you keep getting in it you will either pop your motor (if you’re boosted) or you will realize you need a controller/computer that will completely control the injectors with its own drivers. If you’re N/A, you’ll fiddle with it / “tune” it on the dyno and make your little number hp gain, and then in two days it’ll be running the exact same as without the controller after spending time and money. If you have a NON vvti 2J motor/computer you can use an SAFC or Map Ecu or aem FIC, or Greddy Emanage or whatever other piggy back your heart desires, but not on these VVTI computers."

[@ForwardMomentum]

Absolutely false. My AFRs do NOT change on the high throttle map. Months and months of data to prove it. On the Low map I agree. Tuning the low map is pointless. The computer fights the low map tune and strives for 14.7 in most load factors. The exception on the low map is a cold start, where it reverts to your settings.

[@saulhernandez1953]

Good video any idea I have a Lexus GS 430 2002 it hesitates on acceleration thank you

[@ForwardMomentum]

Check ACIS. instagram.com/p/CIqm5g-ng3K/?

[@gabrielrosales4344]

Will it work with the GS430?

[@ForwardMomentum]

Of course. You have to follow the wiring diagram for the 3UZ though.

[@michaelcharity3577]

Q: At the 10:09 mark, where you connect the maf red/blue wire to the neo apexi... is it the blue or purple wire coming from the neo apexi?

[@ForwardMomentum]

I just tried to look but I shrink-wrapped all my wiring so I can’t tell. You’ll need to use the Apexi T10e diagram to see which wire.

[@user-gb1ne5jj8v]

I’ll pay you to do mines man

[@thomasfrank7327]

Hey I'm doing my brakes now from gs to LS400 got a question my mechanic says the rotors aren't seating properly over the hub to make a long story short he's grinding the diameter .003 wider u run into anything like this?

[@ForwardMomentum]

Nope, definitely not. Weird.

[@InverseGrill]

Do you by chance have any 01 430 wire diagram for the neo? Can’t find anything I’m stuck

[@ForwardMomentum]

I don’t, but Apexi should have the diagram online. If you use that and also look through ClubLexus posts, you should find what you need. That’s how I did it anyway.

[@InverseGrill]

@@ForwardMomentum unfortunately I’ve looked all over forums already, just sent apexi an email, they don’t have a wire diagram on their manual

[@maonzongthao5918]

Does this meds with emmisions?

[@ForwardMomentum]

Depends on how the municipality measures emissions and how it’s set up. If you overfuel it, then it could fail at some point.

[@ayeitme6773]

Will this help to help to adjust the air/fuel if the car is running a bit lean after installing cams on a lexus as well?

[@ForwardMomentum]

Yes; only in open loop.

[@ayeitme6773]

@Forward Momentum ooof thanks for the reply .. was quicker then I thought Already watched the street tune video and now I'm gonna watch the afr install video

[@mrworldwide6770]

Were can i find a tuner for a 94 gs300

[@hudzgh]

As a former mechanic who has cut out way too many problematic aftermarket remote devices, I just can't in good conscience tap into important sensor wires! Especially when the proper/safer way to do it would be to 'poll' the necessary info from the ECU via the CAN bus. The diagnostic nightmares possible from (unseen from the wiring diagram) 'phantom' devices I wouldn't wish on anybody! Sorry! Tonight was my turn to be the curmudgeon.

[@ForwardMomentum]

No problem. I totally understand. Boomslang makes a custom harness for $500 for those who do not wish to utilize the tap method. Thanks for watching and commenting.

[@BangBang-ot4kn]

Yo yo nice video bro

[@moahmedmig3233]

I have aqustion, why going to something like Neo when we could install a piggyback ecu ?

[@ForwardMomentum]

$200 vs $2000? Plus, we have proven that AFC works. In fact, my friend has the same set up, with a TVS1900 and 400WHP. So I have no argument against a standalone at all, but in terms of finances I think it’s overkill. I have guys telling me all the time “but you can get a used standalone for $1000.” Oh really, what about the custom wiring harness, set up and tuning sessions? Add at least $1K to that. In the end I might be leaving 10-20HP on the table and a bit of a safety margin, but the goal was to show viewers that you can supercharge these things safely on a relative budget. 👍

[@moahmedmig3233]

@@ForwardMomentum thanks for your replay, i mean abiggyback like ecumaster det3 ,so you can control ignition also, i think it is the same price as APEXI NEO, searching for NEO and it is listing 350Usd 😦.

[@ForwardMomentum]

If there’s a budget standalone that works I’m all ears. I have yet to find one that is recommended that’s under $1000 for just the unit. Regarding the NEO they come up in places all the time used or similar. Mine was $220 new on FBM as I found a guy that just didn’t use his and had it new in a box. When it comes to standalones I would go with units that gurus recommend only, such as Kelvin at CarTuneNZ.

[@moahmedmig3233]

@@ForwardMomentum ok thank you for your advice, nice car wish you the best, and have alook into Islam .

[@ForwardMomentum]

Thanks for your comments and questions. Regarding Islam I have researched it and, as a Christian, I could not reconcile any of its major premises with that of Christianity. Needless to say, I have many friends that are Muslim and I respect their beliefs, even though I may not agree with them on any major points.

[@bscovronski]

When is the dyno video

[@ForwardMomentum]

When you send me $250. :) seriously though, I shouldn’t need it with my AFR meter. Plus I’d like to do headers. That said, it’s on the list.

[@vicentedrucci9909]

?no hps added?

[@ForwardMomentum]

What makes you think that?

[@vicentedrucci9909]

@@ForwardMomentum it was a question. That's all

[@ForwardMomentum]

@@vicentedrucci9909 the question said “no” at the beginning so I also had a question. I don’t know the HP because I haven’t hit the dyno yet.

[@wattshington]

This system to lean bank 1 engine code is annoying I need this

[@tonytonez5561]

Fr fr i installed k&n intake and ever since then

[@pattygq]

How did you figure out what sensor setting number to use? ex 2 in 2 out.

[@ForwardMomentum]

For my car it was hours of research and trying to decipher the Apexi online instruction manual.

[@TradedProductionsHD]

About how long did the install take?

[@ForwardMomentum]

TradedProductionsHD 4hrs if I didn’t have to film. 6 hrs with filming.

[@GoldCoastComposites]

Would it be the same install on the gs300?

[@ForwardMomentum]

Yes and no. The ECU pinout is different, so you’d need to follow the Apexi schematics for the 2JZGE.

[@phatmiike]

What happened to the how to redline video :(

[@ForwardMomentum]

Rev limiter? It’s in this one: kzbin.info/www/bejne/iXXPaJeijZWJqK8

[@g.g.1976]

у меня тоже GS430 с фаркопом, катер тащу))

[@swordsmenbacon9347]

What was the extra hp #'s when tuned with ur upgrades on the neo safc?

[@ForwardMomentum]

No idea. I didn’t dyno it. The shop wanted $300. That’s why I have a street tune episode.

[@swordsmenbacon9347]

@@ForwardMomentum oh ok did it make a big difference and how about mpg?

[@ForwardMomentum]

@@swordsmenbacon9347 more torque for sure, especially at midrange. No difference in mpg.

[@swordsmenbacon9347]

@@ForwardMomentum ok good thanks for the info possibly looking to get a supercharger adapter plate for the m112 setup but gotta do more research before I make the commitment on that setup

[@ForwardMomentum]

My buddy is SC’d on his GS400. It’s a fair amount of work to get it right. I wouldn’t push more than 6psi. Rings will go first.

[@china-wangzisong]

Hello, I just bought 2gs300. How can I get your fb? I have some questions and I want to ask you

[@ForwardMomentum]

Best way is DM on IG. @youtube_forward_momentum

[@china-wangzisong]

Hope to get your reply

[@china-wangzisong]

@@ForwardMomentum Hello, my friend, can you chat in FB? I come from China, so ins software is not easy to use

[@ForwardMomentum]

No I cannot.

[@china-wangzisong]

@@ForwardMomentum I would like to ask the gs300 Aristo vscoff button does not work, what do I need to check

[@ABDUL17764]

Tq

[@elfasboat3012]

Would this work on a ga300

[@elfasboat3012]

Gs300*

[@ForwardMomentum]

Yes, but the effects are not enough to be worth the cost. You might get 5HP or so.

[@ILLUMINATION313EVO]

Mine is not turning on it's a safc2 what all should I check

[@ForwardMomentum]

Pinouts, power, ground and plug on back.

[@ILLUMINATION313EVO]

@@ForwardMomentum I checked the plug on the back of it I opened it up didnt look like the board is fried. Going to open the box now and check the pin outs. Thankyou man. Is there anything I should look for in the pin outs? I didnt put this together so I'm trying to back track. -98gs 400

[@ForwardMomentum]

Power and GND will power it up, even if everything else is hooked up incorrectly. So if it’s not powering on at all, definitely follow both power and GND all the way to their sources. When I had a bad PWR source (loose connection into a fuse spot) my car died WHILE DRIVING. It was terrifying to be honest. That said, get it to power up and go from there.

[@ILLUMINATION313EVO]

@@ForwardMomentum yea I felt that it was pulling alot of volts from the battery the volts would drop while driving and rpms would drop. That could be a alternator issue but since it has not been powered on I dont seem to have that issue. And the battery stays charged longer. I'll replace alt and battery to see but.. anyway I pulled the box off and looking at the connections. They seem to be ok? It's hard to tell which wire it is since I cant tell where he ran it through the firewall. Any way I can send you a email with pictures of the wire pin harness and such? I don't want to pull the wires that look spliced and taped off there are multiple that are taped. I don't think he ran the ground like you did under the arm rest. It seems there is a green wire ran to a black and red on the pin. A purple wire to a grey, a black to a brown, a yellow to a red and blue a white to a red and blue a grey to a red and black and a brown to a brown then there is a different green wire not from the same bundle of cords running to a blue and yellow. Of course he says he dont remember how he ran it so. Currently have it on a battery charger I left the door open doing all of this lol. Also do you think I could just strip it from the back to not have to track this down and just run a hit lead and ground to the wires by the unit so I can see if it will even power on or is that a bad idea to splice it by the unit? I feel that would be easier than trying to track down which wire went where thru the firewall. Thanks soo much for your help man.

[@ForwardMomentum]

I really can’t do remote troubleshooting via email. I get way too many messages and this is just a hobby for me. I shared as much knowledge as I have on my video; from there it’s pretty basic electrical troubleshooting stuff (nothing too crazy). Im sorry - not trying to be a jerk. I just don’t have much more to offer than that.

[@anotherpewtertahoe]

Woot

[@ethansmith8442]

How much of a pain in the ass do you think It'd be to do this on a sc400

[@ForwardMomentum]

It’s all relative. Depends on your expertise and patience levels. On a scale of one to ten, ten being the worst, I’d rate it a four.

[@ethansmith8442]

@@ForwardMomentum Ok👌and do you think I'd need a ecu like this if I were to go long tube headers? I heard that the stock ecu has no problem adjusting, but im conflicted since long tube headers are typically for race applications.

[@ForwardMomentum]

You absolutely need this if you go headers.

[@jimt5683]

The graphics on the screen look like an 90s Nintendo game graphics smh

[@jimt5683]

@@ForwardMomentum shut up cry baby. I'm just saying that display screen look outdated!

[@ForwardMomentum]

Jim - I deleted my comments and want to apologize for our misunderstanding. I thought you were criticizing the graphics I used for text in my video. After your last comment I now understand you’re criticizing the Apexi NEO graphics. I’m sorry for jumping on you and being defensive about this. I agree with you! The graphics are hideous compared to today’s standards! I sometimes get people ripping on my videos for no reason and I thought that’s what you were saying. My bad. Again, I apologize about this misunderstanding.