Didn't pass emissions. HC's at idle too high. Any suggestions?
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I have new plugs, put them in a couple hours before the test and I have an open air filter. Does cleaning the ISV do anything?
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A lot of the usuall remedies have worked in the past for me but not this year. I'm thinking it's the S/W. the MTM seems to advance the ign timing too much @ idle. I'd like to swap in a stock ecu and try the test, but I can't seem to find one locally... and my stock chips are kaput!
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