Hey guys, does anyone have a westers pcm in a 5.3 L, if they do, what was the difference like? Has anyone dynoed one, stock versus either pcm or predator? what was the gains like? anyinput on this would be appreciated! thanks
Anyone have experience with the Hypertech III programmer? My brother has a 5.3 and his buddy went from a gasser to a DMAX, so he gave the programmer to my brother. IS this thing worth installing, any issues to look out for?
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!