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International Automotive Technicians Network
Re: 1992 Chevy Suburban 5.7 and High HC
Posted to Technical Discussion Forum on 2/18/2015

I did finally look at the movie and interesting. Actually idle was around 650 rpm with some slight trimming of fuel. Of note is later in the movie the Knock pid changes considerably and Knock Retard increases. The question is why?

Right now, I'd prefer seein... Login to read more.