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Z51JEFF · 03-09-2012

This is the fourth ZR-1 here in Ca that has failed that I know of.My 91 has 18,000 miles on the clock and it failed twice before I took it to a referee and it passed.Witrh tg first 2 smogs car had a Haibeck chip,open filter lid witsh a KnN filter.The last smog was bone stock new 02 sensors,its the Nox levels that are causing the problems.I suggest you join THE SEMA ACTION NETWORK.Ive got a number to call and ask if anything is being done to help owners that cant pass.In 4-2011 the state lowered the max limits in an effort to get older cars off the road.How would I find out what the smog levels were when the car was new?After I failed twice I dug out some of my past smog paperwork and my car with 6000 miles tested at over 500 PPM at the Nox levels.

03-09-2012	#14
Z51JEFF Join Date: Dec 2007 Location: Fremont, CA Posts: 3,092	Re: CAN'T PASS CALIF. SMOG, IDEAS/HELP!!!! This is the fourth ZR-1 here in Ca that has failed that I know of.My 91 has 18,000 miles on the clock and it failed twice before I took it to a referee and it passed.Witrh tg first 2 smogs car had a Haibeck chip,open filter lid witsh a KnN filter.The last smog was bone stock new 02 sensors,its the Nox levels that are causing the problems.I suggest you join THE SEMA ACTION NETWORK.Ive got a number to call and ask if anything is being done to help owners that cant pass.In 4-2011 the state lowered the max limits in an effort to get older cars off the road.How would I find out what the smog levels were when the car was new?After I failed twice I dug out some of my past smog paperwork and my car with 6000 miles tested at over 500 PPM at the Nox levels.