I have some vacation time comming up next week and I will be going down To San An for a week. I have 2 friends from Highschool to see and will be getting my new truck dyno tuned while I am down there. This is the 3rd vehicle that Allen will have done for me. First was my 04' RCSB 5.3, which ran a 14.6 with just a catback, FIPK and a 93 tune. The 2nd was my 05'GTO A4 which ran a 12.3 with a catback, 3000 stall and a tune.
My new truck is a 06' 5.3 ECSB 3.73s ect. As of now the truck has about 9k miles on it with a Magnaflow catback. it currently pulls down 16.2 MPH in the city and 21.3mph on the highway at 70mph. It also has the factory GM 20in wheels. Ill do a MPH check on the way down there before the tune, and report back after the tune with HP, and possible MPH increace.