i have an LQ4 with 243 heads, summit flat top pistons (STD Bore), summit 8712R truck cam, 1 3/4 long tube headers and a truck intake. im running 87 octane. compression is 10.0-1. im having trouble getting the timing table worked out, ive tried a few different settings and cant seem to find where it likes to pull like it should. It is a 2004 silverado 4X4 auto and im running a MAF tune