Well i went to inspection today with my test pipe in and my Hc read 725 and CO% was 9.80. This is way high for the limit, which is 225 and 1.09 in the state of Delaware. I know the test pipe is causing this problem, but could that be all? I have no CEL either, since I wrapped the 02 sensor in foil. Before I went through I put a couple things of octane booster in the tank too see what that would but thast all. I am purchasing a Catalytic convertor this week so that will help out a lot but I waas just wondering if that number sounds right with no tuning done and with a full T1R exhaust and test pipe? Thanks a lot, Hope someone can help.

 

more exhaust flow will lean out a little.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kyle244R948 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks a lot, Hope someone can help. </TD></TR></TABLE>

Try a new o2 sensor and make sure the car is nice and hot when you go. You're right, it's really rich, and probably shouldn't be that rich even without a cat.

Passing this test (illegally?) is one thing, but your car is pretty badly tuned.

I should go to emissions just for fun, before I take the license plate off of my car