BIGDADDY1969

I am doing just that!!!!! I have DiablewTunes in my G8 ... Thats custom tunes from a programmer affiliated with Diablo Sports. You buy the model that allows custom tunes and he does the customizing(For a fee). I had bought Hypertech for my Sierra to compare programmers and in the end u just can't beat custom tuning!!!! So im going to get rid of Hypertech n buy a new Diablo one for my Sierra soon and get custom tuning thru it. G8 runs like a beast the way it should have from the start. I'm leaving it quiet for now but i plan on tinkering with it as soon as i get the ol' lady another vehicle lol ... She doesnt want all our vehickes sounding like racing monsters lol

derrik_abner

Welcome from KY.

BIGDADDY1969

ttp://www.youtube.com/watch?v=v9NbhK817Cc&feature=youtube_gdata_player

http://www.youtube.com/watch?v=yYCWY...e_gdata_player

BIGDADDY1969

08 Sierra OBX headers w/catted y-pipe and QuickFlow muffler hwy run - YouTube

Limiter is off it doesnt cut out it just Didnt have room with traffic to run pass 100..Bummer...lol ... Soon as my house is built i planned on cam and gears possibly