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smoky02 · 10-25-2013, 02:30 AM

More than likely your misfire is due to the custom grind cam. When speartech built my harness and initial tune they did a horrible job of giving me a start tune. I told him all the specs of my motor(you can see in my sig). And he sent me a tune for an ls1. That could be what's happening to you. John Weeks got it worked out for me though.

10-25-2013, 02:30 AM	#38
smoky02 Registered User Join Date: Oct 2003 Location: Sunny, Florida, some might call it South Alabama Posts: 834	Re: Trouble codes More than likely your misfire is due to the custom grind cam. When speartech built my harness and initial tune they did a horrible job of giving me a start tune. I told him all the specs of my motor(you can see in my sig). And he sent me a tune for an ls1. That could be what's happening to you. John Weeks got it worked out for me though. __________________ Just sold my C10...sad day... Looking for a 1972 Blazer to hopefully fill the hole in my heart.