Pass Emissions Sniffer Test W/No Cats???

[01GTvert]

I tried testing yesterday in Naperville but was told my SCT chip was interfering w/the tester's ability to communicate w/my ECM. Seeing how my car wasn't throwing any codes they would just back it up and use the sniffer. I didnt want to get busted for not having cats so I declined and went on my way. After reading a few threads I'm thinking I might be able to pass the sniffer being that my car is tuned lean at idle anyway. If on the odd chance they inspect the exhaust I can just play dumb and say the resonator where the 2 pipes meet in the middle is the cat. Who thinks this might work or am I just dreaming?

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[rdsnake]

IL doesn't have a visable insapection just a IM 240 test (obd1 cars) and a monitor test (obd2). I don;t think you will pass because they rev the piss outta the car with no load.

 

[hj16]

IL doesn't have a visable insapection just a IM 240 test (obd1 cars) and a monitor test (obd2). I don;t think you will pass because they rev the piss outta the car with no load.

I thought that for 96 and newer cars they just plug in and run a check for any codes. If there are no codes you're off the hook.

 

[01GTvert]

IL doesn't have a visable insapection just a IM 240 test (obd1 cars) and a monitor test (obd2). I don;t think you will pass because they rev the piss outta the car with no load.

I guess I can live with this as long as they don't look under the car. My car's tune is so piss poor lean at every thing but WOT as long as they don't get it to boost when they rev it I still might pass :clap:

 

[cyac5l8trfcar]

I thought that for 96 and newer cars they just plug in and run a check for any codes. If there are no codes you're off the hook.

that's exactly what they do. Just make sure that your egr doesn't set any codes and your rear 02's are off. If the car is exceptionaly loud they will look underneath.

 

[01GTvert]

that's exactly what they do. Just make sure that your egr doesn't set any codes and your rear 02's are off.

I have all this stuff taken care of ...the problem is they can't read my ECU because of the SCT chip so they have to use the sniffer. WTF!!! Thanks SCT

 

[Bigturbonotch]

my buddy went in for emissions with his cammed ls1 with full o/r exhaust and on mickey thompson et street drags and they passed him....i was in shock.

 

[hj16]

I have all this stuff taken care of ...the problem is they can't read my ECU because of the SCT chip so they have to use the sniffer. WTF!!! Thanks SCT

They dont go after your EEC, they just plug into the same port that the flashers do.

 

[Blood on Blood]

So, they look under the car and do not see any cats.

Is the result a simple "No Pass" and you come back with a set of cats on the car?

Do they immediately suspend your license?

 

[cobraj]

So, they look under the car and do not see any cats.

Is the result a simple "No Pass" and you come back with a set of cats on the car?

Do they immediately suspend your license?

+1 Im curious too

 

[Ear Rak]

if i remember correctly, they give you 2 weeks to a month to fix it. basically they give you a nother date to get tested and you have to pass. happened to my friend with his rust bucket 86 monte ss

 

[mustangmike2003]

if i remember correctly, they give you 2 weeks to a month to fix it. basically they give you a nother date to get tested and you have to pass. happened to my friend with his rust bucket 86 monte ss

Yup and if you dont pass with in 90 days they suspend your license and dont tell you. I know first hand as I had to go to MPPD and bail my friends dad out of the slammer.

 

[zenriddles]

In My Experiences with the SCT Chips on EEC V Equipped SHO's, the SCT Chip DOES interfere with Basic communications.

They Plug into your OBD II Port and all they get is "E" for Error. They don't get trouble codes - They get a "This Just AIN'T Gonna Work" Code.

Yes, The cars without Cats CAN Pass with regularity on the Sniffer test. On a Well tuned Modern FI Car you'd practically need a Holed Piston to fail.

Not sure on the Legalities of the Visual test for Cats. In MY Day, we used to bandsaw the cats in half and weld a straightpipe INSIDE of the old shell and put it back on. Cats today are so much better that it isn't worth the hassle to remove them unless it's a track car.

 

[tonydahose]

they couldnt read my computer with the sct tune. i backed it up and they did the sniff test. (they won't try to do a roller test if you have low profile tires, they checked mine) i have a magnaflow catted x and past with no problem. hopefully they won't check to see if you have cats and you might get lucky passing. if not get somebody to loan you their exhaust for a day.

 

[Since 1964]

Factory mid pipe for rent....$100.00 per day 3 day min., or $500.00 for the week with a $500.00 dollar deposit.....CASH!

What can I say? Markets pop up all the time. :headbang:






:joke:
I have had my other cars tested and all they did was plug in and confirm NO CODES. I asked about modified cars and the ( about 25 year old guy ) said we have to check for full exhaust on loud cars, including cats, but usually all we do is plug in and off they go.

I would go and try it, it's all I can do. If I fail, I'll put mt midpipe back on, pass and take it right off.

 

[sonic02gt]

i have a x pipe with no cats i went for emissons and passed i even killed my car on accident and had to start it in the building was pretty loud they plugged into my computer and i still passed without the mil elimantors

 

[01GTvert]

In My Experiences with the SCT Chips on EEC V Equipped SHO's, the SCT Chip DOES interfere with Basic communications.

They Plug into your OBD II Port and all they get is "E" for Error. They don't get trouble codes - They get a "This Just AIN'T Gonna Work" Code.

This is exactly what happened to me.

Yes, The cars without Cats CAN Pass with regularity on the Sniffer test. On a Well tuned Modern FI Car you'd practically need a Holed Piston to fail.

This is the type of practical experience I'm looking for..thx for the confidence builder :biggthump

Not sure on the Legalities of the Visual test for Cats. In MY Day, we used to bandsaw the cats in half and weld a straightpipe INSIDE of the old shell and put it back on. Cats today are so much better that it isn't worth the hassle to remove them unless it's a track car.

I'm going back to retest w/out changing a thing. If I fail I'll just have some hi-flow cats welded into my existing o/r H pipe and be done w/it. I'll post up an update towards the end of the week. Thx to all who replied.

 

[01GTvert]

Update....I PASSED!!!

I tried testing yesterday in Naperville but was told my SCT chip was interfering w/the tester's ability to communicate w/my ECM. Seeing how my car wasn't throwing any codes they would just back it up and use the sniffer. I didnt want to get busted for not having cats so I declined and went on my way. After reading a few threads I'm thinking I might be able to pass the sniffer being that my car is tuned lean at idle anyway.

So I went back today and waited through that BS hour long line and was told for the 2nd time the testing equipment couldn't communicate w/my ECU to complete the OBDII portion of the test and the sniffer test would be required. The techs tried to get me on the rollers but told em no way w/my low profile tires...had to call a mgr over to convince the techs. So no rollers and they only tested my car at idle where it's tuned very lean anyway and I passed the sniffer test w/no cats :headbang: So for those of you who are considering it go for it.

 

[Since 1964]

So I went back today and waited through that BS hour long line and was told for the 2nd time the testing equipment couldn't communicate w/my ECU to complete the OBDII portion of the test and the sniffer test would be required. The techs tried to get me on the rollers but told em no way w/my low profile tires...had to call a mgr over to convince the techs. So no rollers and they only tested my car at idle where it's tuned very lean anyway and I passed the sniffer test w/no cats :headbang: So for those of you who are considering it go for it.

:clap: :clap: :clap:

 

[zenriddles]

I passed the sniffer test w/no cats :headbang: So for those of you who are considering it go for it.

SCORE ! ! ! :biggthump :clap:

 

[ShelbyGuy]

is this both with a chip and a flash or does this issue happen with chips only?

 

[02mingreyconv]

is this both with a chip and a flash or does this issue happen with chips only?

I think it is an issue with the SCT chips only. My logic behind that is that I need a special cable when I connect my XCAL2 to the ODB2 port. Pin 13 (i think thats the number) is removed in the extension cable.

I will be going to test with my O/R pipe today, so we'll see what happens.