So I have been thinking of a tune of some sort for a while between handhelds(cold day in hell) mail order which wouldn't have been bad but having a tune done for an area completely different then where I live just didn't sound as good as finding a reputible local tuner so I looked around and asked question and decided on EFI Alchemy and doc so let me tell ou about the truck 08 Gmc Sierra rcsb 4.8l cat back exhaust, k&n cai i had put a little larger tire on truck to couldn't pass up deal, So it is not lower and track ready but i do like to have some fun and I also do some towing so that's about for the truck now for the tune doc showed up hoped in truck and started to do his thing by the second dyno pull after make a bunch of adjustments from the computer to the transmission he freed up an amazing
67hp
(i have the read out to prove it) the truck drives different and responds now instead of thinking about what to do when i hit the gas! Thanks guys!
