Hey all. High co2 on emissions test, here in Colorado. I tried the GTP (guaranteed to pass) emissions brew. It lowered it substantially, but not quite enough to pass the test. What kind of things should I look at? I searched through archives and didn't see anything about this (although I'm sure there is something). Please direct me.

CArmen, this topic has had many thorough discussions - try emissions tests or emissions testing.... You can also PM Ed Rach. He is well versed on this topic and can easily lead you through steps to get you through an IM inspection. And Ed is a genuinely great guy, also.

Did you mean CO instead of CO2?

monoxide, correct. I will look through the archives again, thank you.