DIY: Can't Pass Emissions? Thank goodness for denatured alcohol...

[dabuilding]

u can also just retard the timing all the way thats how i did it on my friends car after it failed

[tubby]

u can also just retard the timing all the way thats how i did it on my friends car after it failed

YUP depending on what failed and how bad. u can retard the timing. and run some ISO. rubbing alcohol only 91% in the tank and run some water-weter in the radiator. also if u know the emm. guy u can take a spray bottle with water in it and lightly spray some at the TB wile testing. (that is if you know who is doing the test.) but i would asume if u knew the guy than he would be able to help u pass it ) this will cool it down a bit wich will bring your number down slightly.

[Lankhoss]

Sorry to bring up an old thread from the grave, but I was curious if anyone knows if this works for Co2 as well? My Vette passed NoX but failed for Co2. I was 1.26 the first day, and 1.32 the second....the limit is .97.