How to Pass Emissions Without a Catalytic Converter!

[@Bassmasters1984]

I actually did this to my 05 f150 was throwing p0420 catylist below threshold put this j spacer in I used the one with biggest hole and after a week took it down and passed smog in California lol not easy to do but it worked flawless definitely work 35$ instead of replacing a cat

[@NeutronX101]

Did you place it on the 1st o2 sensor or the downstream 2nd o2 sensor?

[@mikeleblanc6300]

i have the same 05 f150 with same issue. i need to try this,thx.Did you place it on the 1st o2 sensor or the downstream 2nd o2 sensor?

[@gabrielcornejo238]

Nice advice. Here in Illinois from 1996 are required to pass emissions tests but they only check on OBD scanner. So this device might help faulty catalytic pass emissions.

[@AutoAutopsy]

that's how it is here in my county in AZ!

[@danielsmith1897]

A defouler works on my gutted converter on my 2012 Silverado!

[@jonbo3867]

Did you guys have to flash stock tune to pass the test I’m in Illinois too I have a defouler already just wondering if I need to flash stock tune on my ST

[@eaglemehanafilms]

@@jonbo3867did you pass? And do we need to cash stock?

[@sanitei8767]

Oh no, if I do this someone might get smoke poisoning and 2 glaciers will melt .I’m soo concerned for the well being of my fellow illegal immigrants that I pass by at Home Depot that I will disregard everything you just said and put my cat back in . Now let’s be serious most regulations our government puts down are bs look for example marijuana . They jailed millions of ppl probably and now they want to legalize it .

[@blackturbine]

Catalytic converter is not some government bs It's one invention that saved billion of lives from pollution like CO and NOX

[@mitri5389]

@@blackturbine yeah sure... like my 1 out of 100,000 weed wacker that came from a harbor, brought over from china on a 1000 foot boat that basically runs on refined tar... but hey at least my weed wacker has a catalytic converter

[@thisisyourcaptainspeaking2259]

I put a cat on my obd1 car just b/c I didn't like the stinky exhaust. No difference in the way it runs but stink is gone. It was a cat for obd2, the price was right.

[@EshaKarim]

Wattamoron wheatrash

[@uscar17]

My question is, how does the defouler work ? Does it just let less exhaust gasses to the O2 sensor, making it think that the cat is doing its job ?

[@AutoAutopsy]

I believe that's the idea; great question

[@uscar17]

I would guess so, since it doesn't appear to be plugged in to anything

[@Bassmasters1984]

Pretty much does work tho I did it on my f150 and I live in cali

[@morganmitchell9931]

You use an 02 gas restrictor they got them from $12-($45).. now that's out the way.. your gonna race me when??lol;)

[@AutoAutopsy]

Lol we have to ;)

[@onehappydawg]

After looking through all these comments I can tell that a lot of people do not understand that laws and regulations change from county to county and from state to state. This is definitely the case when it comes to almost anything to do with emissions. You may live in a county with the most strict emissions regulations in the whole country and right next door in the next county they couldn’t care less. There are lots of places across the country that do not even do emissions testing.

[@danielsmith1897]

Ive got a defouler on all 4 of my vehicles and never had a drivability or emissions testing or CEL problem and I've had the very 1st one on for bout 8 yrs

[@AutoAutopsy]

nice

[@JacketCK]

how to pass emission, you pass the lady doing the inspection $50 💀

[@mrapter7]

Is this like, a permanent solution? Just leave the defoulers + 02 sensors in?

[@drue2283]

That's a good idea but if you happen to get a visual emissions inspection it'll probably fail

[@mattharper588]

Sir Render the real pros will cut the cat open on top and remove the material inside then weld it back together and reinstall the cat on the car so if the car is inspected you can not visually see it has been tampered with

[@FishFind3000]

@@mattharper588 but you still need to be able to pass the electronic test. The one that will catch all the tricks whether it passes visual or not is that sniff test off the tail pipe.

[@withapulse2000]

Just used this same device but different brand also with the smallest hole and it worked perfectly on a late 90s 6 litre V12 de-cat. .

[@bocajchannel443]

What car have you got

[@TsePai]

probly a mercedes sec 600@@bocajchannel443

[@jamiereb4818]

3 years later, is this still working out for you? I'm in AZ as well and I'm looking for options with Mt bmw.

[@AutoAutopsy]

yep! not a single issue

[@akashramtahal9209]

I'm curious. Does this cause the cat monitor to show as ready?

[@Dr650rob]

I used these last year with no problem but now I can't get the monitor checks to complete no matter how much I drive it (16 f150 5.0l with aftermarket headers exhaust and cats)

[@ErikN1]

Wow. This would not work in Sweden. They measure the exhaust for compliance

[@AutoAutopsy]

:(

[@Based_F22]

Erik N that sucks. Atleast they make high flow catalytic converters

[@svagisen]

Hälsningar! They used to do that here in Utah, as well. There is still a visual inspection, but lots of people hollow out the cats or else weld the cat casing overtop the pipe. tricky, tricky :)

[@drmurda]

Communist Sweden*

[@heinargo]

Check engine or no check engine, but what about carbon monoxide and hydrocarbon readings? I am not sure that even Saab B20x and B23x engines could pass emissions test (in Estonia at least) and they are very clean running engines.

[@ashtonmorgan6867]

Does this defouler screw into the up or down sensor sorry a little dumb

[@joshuakowalchyk7002]

Now what if you car is tuned will this device make my car run funny because now the o2 sensor isn’t reading right or dose it read the same back pressure and all that just test for how clean or how much carbon is coming out

[@everibanez1068]

Does this still working? I’m in Cali and need to pass emissions but I have High flow cats in my car catalytic converters are expensive! 😂

[@AutoAutopsy]

i never had an issue with it

[@AikidoTubeSock]

The product is gone from the website as linked. I looked on eBay and Amazon and found similar ones but they all lacked one or more details. Is there an alternate site?

[@AutoAutopsy]

i don't know, sorry

[@brandonstolberg8806]

I think a lot of emissions laws are crap. In the early '90's while living in California, I had a friend who worked at an emissions shop. Just for kicks we ran a bunch of tests one night, with emissions equipment, and without. This shop had a dyno and did load test emissions. We tested a 1990 Ford F250 with the 460 cu. in. big block, a 1988 Toyota Celica, and a 1993 Mitsubishi 3000 GT. As expected, the removal of all the emissions equipment produced a noticeable gain in horsepower and torque in all vehicles. Unexpectedly, they also produced cleaner tailpipe emissions under load with the emissions equipment removed. May not be the case all the time, but that is what we experienced.

[@AutoAutopsy]

Lol that’s interesting

[@darrenrausch5876]

The converters are contributing to global warming. They turn carbon monoxide into carbon dioxide and although this reduces smog in dense urban environments, it also heats the environment. sequoyahsteminstitute.org/blog/2019/2/1/the-catalytic-converter-its-pros-and-cons-in-the-modern-world

[@thothheartmaat2833]

also the general practice and advice given for how to get your monitors ready for a test is for everybody to go out and drive on the highway and around the city for hundreds of miles trying to get your monitors to set.. yeah thats how we lower emissions.. go drive around everyone..

[@marblox9300]

@@thothheartmaat2833 Yep, this country and all of it's STUPID rules are so full of shit. If no vehicle in the U.S. EVER got tested for pollution - the air that we are all breathing would be exactly the same as it is now.

[@KenzertYT]

My guess is they may have not had enough time to heat the cats up, the way the cats work (for anyone curious reading) is they get hot enough to catalyze (aka burn off) the unburnt fuel emissions, that normally didn't get burned in regular engine operation.

[@Manchild..wisedumb101]

I know.. i am mad late.. ha!! But wdy think? If i got.a ebay header an ran that matched with the stock manifold.. like unequal length headers rite?.. for the sound f hp it dont have hp ne way it a 325xi m54... 5speed turd.. that i have much money invested into hate it stuck with an want to make how i.wish.. wich is sounding like it.. but better an have thst subaru sound.. by doing unequal length headers.. wich are not available for it.. so if i get a header an leave the other side stock..nthat is unequal? Rite??..... ? Am i genius? Or a mf retard.. what you think ??

[@Manchild..wisedumb101]

Help!!!!

[@AikidoTubeSock]

Will/won't the defouler be detected during the emissions inspection? Even though the catalyst monitor will show as completed via OBDII scanning, don't they also do a visual inspection under the car to look at things like you O2 sensors?

[@AutoAutopsy]

depends entirely on where you live.

[@juliemanarin4127]

Not in Illinois

[@ashtonmorgan6867]

For missouri they just plug in a tool

[@tannervallejo1340]

took my dads car to a smog place in cali a while ago, seems like they just used an obd tool and a tailpipe sniffer. inspection seemed limited to the engine bay, perhaps since the exhaust note is very stock it didn’t lead them to look further.

[@tannervallejo1340]

took my dads car to a smog place in cali a while ago, seems like they just used an obd tool and a tailpipe sniffer. inspection seemed limited to the engine bay, perhaps since the exhaust note is very stock it didn’t lead them to look further.

[@ivanpalamarenko3729]

Web error “Product not Found” Through link

[@brianpreston3052]

I just bought a 14 mustang gt 6 speed. The kid punched a hole in the cats. And cleaned them out. I have two defoulers on it not but not like the one in the video. The ones I have are flat ones you get at autozone. Would that one work. Or will I keep getting codes for the cats

[@josevillegasromerodaniel5841]

Should be able to work either way

[@AutoAutopsy]

I wouldn't know.

[@deso2048]

Could you provide a new link that one is too old I guess lmao

[@AutoAutopsy]

should be available on Krona's website

[@Casperarizona]

Arizona isn't messin around out here. Its no longer available the defouler from this korona. I need a few for my Catless downpipes on my 335i. You know of another place to pick some up?

[@AutoAutopsy]

amazon maybe idk

[@Makal.0w0]

You can use spark plug non fouler as a spacer

[@lesjones2656]

Does not show on Amazon ether..bullshit scam

[@ExorcistRecords]

This does not work for the long run. I have a car that has a header without catalytic converter and I did this trick and it worked for like 3 months then I don't know if the computer realized that the information that was receiving was off from what the normal oxygen level was from factory and it started running rough and wouldn't accelerate like it should so it's a fix for short term till you get car tuned or replace catalytic converter completely but I won't recommend for long run.

[@gazimohammedshameil6743]

I live in Arizona too I need something for W212 Mercedes E350 4-Matic. I already ordered another brand in the morning so hope it works. Will your brand work in mine too, just asking. However I do believe I need 2 for 2 downstream since it’s a V6.

[@AutoAutopsy]

you might, assuming it's NA and you have two downpipes. i only have one downpipe so i only needed one

[@thehulkamaniabrother2.089]

Jerry Seinfeld had a Saab 900se turbo..😂

[@AutoAutopsy]

Yep! He had a few Saabs throughout the show. They’re all different from the one here unfortunately

[@Skillz2014]

how many miles do you have to drive after the install?

[@AutoAutopsy]

none, i did it when i installed my exhaust initially

[@ChrisZajac-bj4ey]

Didn't work for me. Tried all three inserts. 2009 Tundra cat delete, True dual exhaust with H pipe.

[@ironreaper8993]

A nice tip I can get a pass everytime no matter what yeah it's a shitbox but at least I own it no payments 2013 chrysler 200 3.6

[@nicka5252]

Hey I got a p0057 code after installing this? Can someone help thanks

[@morganmitchell9931]

I think it be pretty even seeing as both our mods list are close to the same.. keep the videos and Saab life coming.. best wishes from your friend about Saab bro NC..

[@AutoAutopsy]

Thanks!

[@josefranciscoacevessanchez5508]

I'll try it. I have a mitsubishi lancer 06 that achieves the meets for a recall for DTC p0421 but in Mexico Mitsubishi says that they don't have even the scanner to fix the problem, they sucks.

[@nightkiler56]

lol I’m here for my 02 lancer. They’re picky about that p0421. Mine was fine for years until recent

[@josefranciscoacevessanchez5508]

@@nightkiler56 the trick works to trick the scanner but is not worthy if the agency puts the probe to measure contaminants 😓, just take care about that. Regards from México

[@josuesinho9710]

I still get the check emission system on my dashboard :( it didn't actually work

[@mexx9913]

Nice turbo X. I have a 93 V6 with GS downpipe, Do you have any fault code after using it? ^^

[@AutoAutopsy]

No code for it. that's the whole point of the video! lol

[@Ritarose-lv9zq]

Working on test results goes to legal handling, having a friend in there won't be bad, said this till i got to Stray Administration, the KZbin channel gets to you close to the person and works you to the right part i mean thr best...❤❤❤

[@williampadilla7152]

Where'd you buy that

[@AutoAutopsy]

amazon

[@adrianlaboy6768]

Can you still find this the link is old and dosent work can someone put a newer one. ?

[@niketansidhu6830]

If you gut a cat and put o2 spacer does its throw a check engine light? It’s for a 2022 mustang gt

[@jozefnashashibi9332]

Hey I have that problem check engine light because I delete the catalytic so my question if I use this vibrant o2 it will work remove the check engine light? What’s the best way to fix this cat problem

[@matthewcandelaria7810]

Did your “cat” reset after installing

[@electric7487]

Volkswagen must be proud

[@AutoAutopsy]

LOL

[@compilationvideos5613]

Not working, the engine light is still on says running lean.

[@just.a.simplejoe]

@Auto Autopsy, forgive me for asking as I'm still learning but can you technically attach two defoulers together to help extend the range the air has to pass by before it hits the 02 sensor??? Looking to finally put headers on my Mazda and doing everything I can to ensure no codes are thrown.

[@AutoAutopsy]

You could I guess, but I don’t think it would be necessary. I don’t know anything about Mazda’s tho so I’m not sure how sensitive the computer is

[@just.a.simplejoe]

@@AutoAutopsy From folks on the community they say it is touchy. Hence put an extender on top of another to further trick the reading...

[@BossMan302]

@@just.a.simplejoe you could just buy a 3 dollar spark plug defouler at advance auto and drill out the hole with a 1/2inch bit to allow more air in. That’s what I had to do with my Nissan Titan. Passed 2 emissions tests so far.

[@dnickens20115]

@@BossMan302 same here works great 👍😁 99 toyo camry

[@hiimwhite9710]

FUCKKKK this makes me miss my 6MT aero

[@AutoAutopsy]

Rip :(

[@kongchan916]

Good luc not avail for purchase in California

[@NeutronX101]

Why do you put it on the 2nd o2 sensor not the 1st?

[@AutoAutopsy]

because it's further downstream

[@AllSoWavyReese]

I have a upstream code no cats. can i put a fouler on?

[@Vadas_Dances]

So…can I find one for a Subaru? 2003? And will it work if I leave the bad cat in the car?

[@AutoAutopsy]

i don't know.

[@loeffdaddy8044]

It’s not for sale anymore

[@AutoAutopsy]

Time to find a different solution!

[@JessieVllogs]

so i have no cat on my car but i want to keep that deep tone on my car that the headers are giving me is there anyway to do that because it smells like hella gas but i’m also scared of getting carbon monoxide poisoning help me please

[@AutoAutopsy]

i'd probably talk to an exhaust shop near you

[@mikeyjimenez6054]

Do I need a down pipe or can I use just a regular pipe and cut a hole and weld a bung onto it?

[@AutoAutopsy]

if you have your stock exhaust you shouldnt need this

[@mikeyjimenez6054]

@@AutoAutopsy Everything’s stock but my cat keeps getting cut off so I want to do a cat delete

[@tduffin2010]

Useless in California and all states that have visual inspection. So that is pretty much everywhere... Don't waste your time.

[@AutoAutopsy]

Many states don’t, so this certainly isn’t a waste of time or money.

[@tomthomson3019]

03 f-250 5.4 2v cat. converter

[@fomalhaut86]

Don't You actually analyze exhaust during the check ups in US?

[@AutoAutopsy]

Depends on the state, but with how crammed the engine bay is and the heat shields, you'd basically have to remove the downpipe in order to see there's not cat

[@fomalhaut86]

So the inspection does not cover analysis with an exhaust gas analyzer? Just the visual inspection of the cat? That is surprising.

[@AutoAutopsy]

Depends on state and county, so when I say this keep in mind it might be different elsewhere. But here, they just do a quick inspection and OBD2 "test"

[@GhostOfAMachine]

Here in Texas, there is no emissions tests so I have nothing to worry about

[@bestbroseph1258]

@@fomalhaut86 in tennessee deoends on year of car, newer cars just get plugged into obd port and move along, ive seen older cars get sniffed

[@gweedomurray9923]

Here, in a 9 county area on the Colorado front range, they do dyno testing so no matter what tricks you employ, what comes out the pipe is what passes or fails.

[@AutoAutopsy]

:(

[@Executiveinvestments-]

So that’s even easier if you have a newer car. All cars that run correctly will pass without a converter. That’s why they went obd route.

[@03kwam65]

Not in va they dont dyno

[@mikejamieson6802]

Do the smog check people look for these with flashlight?

[@lesjones2656]

One more ass hole..Calif is a fascitis state with a dictator..they raised cost for smog..LIC..every other year. They say it's for the streets witch are falling apart..I know of 42 smog shops even if they see it will still pass the car and or truck..anything to stick it right up Calif ass.

[@402gchris]

Work for 5.7 hemi?

[@dronepilot260rc]

Yes sir

[@AutoAutopsy]

i don't know lmao

[@dorarodriguez167]

Hi, so does this work for a 2009 honda crv

[@Bowtie427]

Unusual question My catalytic converters was stolen they also cut the wires to the 02 sensor. I can't afford the almost 2k they want to repair my car.. also the original 02 sensor was in the cat when stolen Can I use a Unusual one? Or do I half to order the factory one ? Btw this is a 2018 Mitsubishi outlander sport... I straight pipe in between the catalytic converter.. I also have to install an bun to be able to screw in the adapter bypass for the 02 sensor I hope the thug that stole my catalytic converter one day has a car fall on them... Thank you for any help that you can provide

[@AutoAutopsy]

i'd hit up a local exhaust shop for advice

[@nathanielramirez8997]

Any idea how car performance differs running with internal cat AND EU cat (the one after flex pipe) vs just internal cat to tip?

[@AutoAutopsy]

not sure what you mean by internal cat! The less restriction, the more power

[@nathanielramirez8997]

@@AutoAutopsy the pipe from the turbo to the exhaust flange is a cat as well as the one after the flex pipe no?

[@josephcastellan487]

I did it but the monitor won't complete

[@AutoAutopsy]

Ok

[@josephcastellan487]

@@AutoAutopsy did your monitors complete?

[@giovannisomajestic3457]

I gutted my catalytic converter im not sure if i should get header or just a defouler plus my check engine light is on.

[@AutoAutopsy]

You just answered your own question….

[@lesjones2656]

You link does not work.. U-TUBE BLOCKED IT. I NEED TO KNOW WERE TO GET THIS.

[@AutoAutopsy]

amazon has it!

[@MiguelRodriguez-ww4qv]

Question I got a 2015 q50 3.7 sport with a full ark grip exhaust and I wanna install test pipes and tune it how could I still pass emissions without the cats

[@AutoAutopsy]

It depends entirely on where you live

[@deejay4837]

But is your car tuned or are you stock

[@AutoAutopsy]

tuned

[@deejay4837]

@@AutoAutopsy So...did you have to flash back to stock or were you able to pass readiness without a CEL? It's rare those things work. The one you have isn't a cheapo either.

[@grady8218]

Has anyone tried this in texas ?? I want to get catless mids but scared I won’t pass emission

[@AutoAutopsy]

try asking on some texas car groups on facebook and see what people use.

[@debramcelroy1529]

2009 chevy traverse garage guy tried one on 02 sensor it did not work so he is ordering one for each sensor do you really think it will work chexk engine light been on since I bought it a year ago

[@AutoAutopsy]

Depends on the car honestly.

[@MileytheJeepV2]

Did you just put the defouler on the upstream sensor? Downstream too?

[@AutoAutopsy]

its goes on the rear o2

[@snowyrt]

I got a o2 sensor spacer and it took off the engine like since I have no cats will it still pass Somg if there’s no engine light code ?

[@AutoAutopsy]

Depends on where you live

[@HeatherNicoleCanyon]

Hey your links no longer work on def..

[@AutoAutopsy]

Sorry, must be NLA.

[@mickeyfinn5843]

Other Saab content would be great including diesel

[@AutoAutopsy]

We don't have diesels in the states

[@aceforever001]

What states do you live in??? I got a Cummins. We most definitely do have diesel's in the USA

[@AutoAutopsy]

@@aceforever001 diesel saabs lol!

[@foxracing125a]

that would not fly in ca. techs in ca visually check for cats, and if its 99 or below which uses the probe to check exhaust it will fail

[@AutoAutopsy]

that's a shame for Cali residents

[@NeptuneNick]

Would this help a car not run rich after buying a catless header

[@AutoAutopsy]

Sounds like that’s a tuning issue

[@NeptuneNick]

@@AutoAutopsy I haven’t gotten a header yet. I just saw forms on the car that it makes the car run rich

[@fernesal]

The defouler cannot be found where you said.

[@AutoAutopsy]

its NLA from that link

[@javaughnmcintosh684]

Did you ever got a check light using this defouler

[@AutoAutopsy]

no..

[@tattooedsoutherncali805bik3]

Do u know if they have a defower for a chevy

[@AutoAutopsy]

depends on the threading of the o2 hole

[@tattooedsoutherncali805bik3]

Auto Autopsy so where do I order this part from can u plz point me to the right direction plz 😁😁😁😁

[@dronepilot260rc]

@@tattooedsoutherncali805bik3 eBay has em CEL Adapter

[@HerbertSpliffington.]

Hey I've installed on my test pipes and still getting cel! Any advice ?

[@dh123ize]

My question is won't they just look at your exhaust system check it for themselves

[@AutoAutopsy]

Depends on the county!

[@PuritaniaTraum]

its 2021 and all these link in the last 5 vids no longer work lol

[@AutoAutopsy]

Oof

[@bryanswenson1452]

Anything Saab.. And throw in some Saab women just as a selling feature. Maybe do a spring break Saab adventure. Use your imag.....

[@AutoAutopsy]

I like that idea!! lol

[@TheWoundedNinja]

Would you install the first O2 sensor like normal?

[@AutoAutopsy]

in my case i did; might depend on your car tho

[@FishFind3000]

First o2 does your fuel trims so yes, leave it like normal so it can read correctly.

[@narwhal9852]

Lol my car is OD1 and does not have o2 sensors I do have a cat though and I have punched it out and just left it

[@AutoAutopsy]

lol

[@SupercarBuilt]

You mentioned you have 2, 02 sensor locations. Do you put a defouler on each one? Or does it work with just the one you bought?

[@_pvn]

Only downstream requires the defouler, if your car should have multiple catalytic converters and/or they have different sensors, you'll need multiple defoulers. Don't go pairing these things in your upstream sensors. As an example my 4 cyl accord only has one catalytic converter and sensor downstream, so I only need one.

[@Bassmasters1984]

Top o2 sensor will stay in pipe second u use a de fouler u want the reading between the first and second to show a different reading being before cat and after cat the amount of gas should be less after going through ur car their for causing the de fouler to trick the car to thinking it has a cat

[@AlexAlex-gl6ej]

Lol here in Europe they go under the car to se if cat is there plus they measure how much co2 is going out of your exhaust lol

[@AutoAutopsy]

Oof..

[@brendan3081]

Are these legal in arizona? Im looking at buying a car that isnt registered here but they have it straight piped with no cats and ill need it to pass emissions if i buy it.....to have a shop install new cats would be about a grand

[@AutoAutopsy]

depends on the county.

[@markanthonyewart]

Can this work on a diesel Isuzu truck?

[@AutoAutopsy]

bruh i don't know

[@wolf.media98]

Still working now? I just bought a whole ass cat but that shit aint got a obd2 sensor inlet and I aint trying to drill into it either

[@AutoAutopsy]

Yes it never gave me any issues

[@wolf.media98]

@@AutoAutopsy The website unfortunately doesn't load for me, either that or they don't sell it anymore, im from AZ too so that's the main thing I need to even worry about too

[@AJStaples01]

Non-fouler

[@Cityj0hn]

Wait What? How does your exhaust actually remove the carbon monoxide and NOX without a cat though? Doesn't this show up on the emissions tests?

[@AutoAutopsy]

You missed the entire point of this video lol

[@7mgtesup1]

So they don't measure any exhaust gas just check the OBD monitor?

[@AutoAutopsy]

depends on where you live

[@crazyfireboy123]

I live in az with a 1986 bmw 325 n it has no catalytic converter can I use this? Or no

[@AutoAutopsy]

should be able to, assuming the threading is the same

[@thesnerk2137]

theres no emission test for cars 25+ years old lmaooo

[@crazyfireboy123]

The Snerk I had to for some reason. Because it wasnt registered in Arizona, so I had to go get emissions done in order to get it registered, but I also could of passed it by getting special insurance and I had to be 18 which I wasn’t at the time so long story short car didn’t pass emissions and I couldn’t get it registered.

[@brantrogers6192]

What about when they do a visual check and dont see the cat

[@AutoAutopsy]

my county doesn't do that so im lucky i guess

[@silverghost9367]

Will these work on a 04 Mustang GT?

[@akatsuki5109]

Following

[@dronepilot260rc]

Yes

[@aaron5.0]

anyone have a cel light come on after installing this? asking for an 00 mustang gt. also which flow insert did you put in?

[@josevillegasromerodaniel5841]

Should work on basically every car just fools your system in to thinking it’s working right

[@TheJetman968]

Will this work on a 92 Mx5?

[@AutoAutopsy]

I would assume so but I can’t speak for other brands

[@heathcalvert1319]

On all make and models

[@franchise-pj6ow]

I have 2 short defowlers stacked , 1st one drilled out and 2nd one standard hole and I'm still getting a check engine light ! Why ? Do I need to add another defouler to each o2 setup ?

[@AutoAutopsy]

i'm not sure; i really only know how these work on my car (Saab) sorry :(

[@Zx14rrrrrrrrrrr]

Did you put them on the lower 02 sensor?

[@franchise-pj6ow]

@@Zx14rrrrrrrrrrr yes, after the cats , post sensor locations

[@Zx14rrrrrrrrrrr]

@@franchise-pj6ow what kind of car?

[@franchise-pj6ow]

@@Zx14rrrrrrrrrrr 2010 dodge challenger RT 5.7