mikel wrote:those older 6.0s gain 20+ RWHP ON THE DIABLO TUNE, SOUNDS LIKE YOU HAD BAD GAS MAYBE

Using which tune?

No thanks...I'm not about to dump another 99 bucks into this pos when it didn't do as advertised in the first place. Time for the trash.

I have an old predator u7198 software rev 2.13, hardware rev. 1.01. The programmer never really worked very well on either my 2000 silverado 6.0l nor my 01 yukon 5.3l meaning I hardly noticed any performance gains, so its been sitting in a cabinet for years now. I recently pulled it out to see if I ...