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Edwardsville, IL | Man, that seems low. The best modification as far as bang for your buck would be EFI live tuning. If you don't have shop close that can do it, you can send off your computer. I think mine was around $400 for 2 tunes. It works quite a bit better than the hypertech programmer I had on it before. You can google it. Lots of places will do it. My mileage was down to 13-14 with 33" tires. After the tuning I was back up to 15-18 depending on whether I can keep my foot out of it. | |
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04 duramax
