does anyone here use a programmer on ther gas engine vehicles? possibly anyone with a chevy truck with a 6.0l. im lookin at buying one here soon but im not sure which one is good to go with. i know a few people that run the diablo predator programmer but they have diesel trucks. and i know i wont get a big gain in power with them which is fine. im lookin more for the ability to adjust my speedo cuz of my tire size and also how firm the transmission shifts things li ke that. but any power gain or possibly mpg gain is always a plus.
thanks for any help