smog Q?

[RiceNmotioN]

so I heard about a wrx making about 300 but won't pass emmisons. but later he added 3 cat on to his car and passed emmisons... correct me if I am wrong but this this possible? and if so why/how come. and will it work for turbo hondas with big injector?

[FrankDMS]

First you need to run your car with* a cat at the emissions place and see how it does. You can get about anything to pass.....but you may need to modify some things first. Feel free to pm me any emission Q's. -run the car and see.

[Slava]

so I heard about a wrx making about 300 but won't pass emmisons. but later he added 3 cat on to his car and passed emmisons... correct me if I am wrong but this this possible? and if so why/how come. and will it work for turbo hondas with big injector?


This is what I'm doing.

[Pang]

Its very possible. Trim down the fuel and it may work. My S2k barely pass with 3 cats. Is this WRX white? ;)

[RiceNmotioN]

Its very possible. Trim down the fuel and it may work. My S2k barely pass with 3 cats. Is this WRX white? ;)



Yep This WRX is white...i am debating on doing this but i am kind of stumped. cause i have a built motor with boost and am not sure if i should swap the motor to pass Emission first or just run 3-4 cats and hope it would pass... Pang how rich were your readin on your chart? i need to know who else has done this to pass. would like some feedback

[Kwando]

PM'ed info on how to pass.

[Pang]

Air/fuel was around 11.5. I had disconnected a charge pipe as well to elminate any pressure. Just don't rev too high or the turbo will suffer with is dc'ed.

[Pang]

oh yeah if you remember Steve with the built b20vtec. He passed a while ago with one high flow cat with his turbo setup on Hondata.

[Pang]

Wheres the edit button?:D

[Mahonroy]

I just disconnected my wastegate actuator so your engine doesn't build any boost while its on the dyno (it may build just a pound or two). Also normally I run the car streight piped, so I just welded in a high flow cat and it passed just fine. A lot of it depends on how good your tune is, or if your running really rich to begin with.

[RiceNmotioN]

Very GOOD DETAILS!