Hi all im new to efi live, tuning, and the forum. I have a 96 Silverado with GMs ht383e 1 inch tb spacer k&n intake system, headman longtube headders, 2.5 inch exhaust and 0411 pcm. I had it tuned by 2 people and it is like driving a geo metro. it has a max of 20 deg of timing at wot or psrt throttle. im hopping for some advice or if someone can look at the tune I attached and maby make changes or tell me what to change. the tune I attached is what I pulled out of the pcm.