I passed CA SMOG test in April this year with my all stock 1991 NSX, MT, 125,000 ml. Just prior to SMOG test both O2 sensors were replaced because of bogging problems, which took care of the problem. The day of the test I drove for about 30 minutes on the freeway in 3rd gear to keep RPMs up and...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.