Engine Tunes/Mods
okay to start I have a 06 Trailblazer with the 5.3. I had a DOD lifter fail on me so I did the DOD delete.
New PCMofNC Rob style cam
LS7 lifters
LS7 valley pan replacement
new valve springs
PCV delete
PCMofNC mail order tune
everything else is stock. I'm getting some valve train noise after...