Quote:
Originally Posted by Demon War Horse
I would recommend the GM 3.91 gears, and GM performance cat back and a nice cold air kit. Various manufacturers have nice CAI systems that give good gains. You can also do headers, but you really need a tune but that will void the warranty. Options are more limited for those of us who want to keep the factory warranty in tact a while.
Just a couple of ideas. If a trusted dealer adds GM performance parts, you should have your warranty intact.
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Sweet thanks for the info. I was looking at the GM LS3 Power Upgrade Kit which includes Heads, Cams and Components. You know if this would work on L99 as well?