That doesn't sound right at all, I'd start asking around and see what other guys with your setup are running.
you need to run a compression test, do a physical tune up and go from there. Sent from my DROID X2 using Tapatalk
Ever since I used that 87 tune I got from him my truck gets lean codes. I got em fixed and 1,000 miles later p0171 came back. If I were you I would get a 5star tune. Sent from my bad ass phone
sounds like you have a really bad tune. i'd get w/ 5-Star and have them hook you up. Just cut your losses from that last tuner and now you know... your 60 time, even w/ your tires, should be closer to 10 than 12.