projectwrx

it looks like im going with a vf34 setup. when smog time comes around, im concerned with taking everything all apart again and putting it back to stock.

has anyone smogged a vf34 setup? do you think i will be able to smog my wrx if i put the stock exhaust on (downpipe and exhaust) and pass? i was curious to know if i could pass with the vf34 setup tuned with the catless uppipe still installed. taking off the uppipe is a PITA so i plan on leaving it installed.

depdivr

If you put the stock dp in, you shouldn't have any problem with passing smog. When I was in Cali, I used a tunner who also owned a smog testing station. (I have an STI ) At the time it had a VF34. Even with a catless dp and up, it passed on all requirements except idle - with a cat in the dp, it would have passed no problem. Ask your tunner for a "clean" tune to reduce emmisions, install the cat and you won't have any issue.

Make sure your ECU is cool with no CELs at the time you bring it in.

projectwrx

thanks!