Hey guys, just recently bought an 04 Silverado rcsb with an lq9, 224 230 cam, P&P 317's, built trans, 3600 converter, 4.11 gears, eaton limited slip, polished throttle body and an under drive pulley. I am having a knock retard issue with it that I can't seem to figure out. The truck was dyno tuned at Futral a few years ago where they are extremely familiar with the truck and to make it short, their customer service and staff is awesome. They bent over backwards answering all my questions and even gave me some pointers as to what to try next. They said it has made 35 pulls on their dyno, so I feel like the tune should be ok. I first pulled the tune and sent it to Allan to see if it was the same tune, which it was. After hearing back from them I checked my exhaust to make sure it wasn't hitting anything, I changed my knock sensors and harness and also cleaned my MAF sensor. When I finished with all of that, I logged the truck and the knock retard is still there. I then pulled some timing in the areas where it is KRing and I still have knock retard. I have tried instead of 91 octane fuel, 93e10 (I have read in some instances the ethanol actually helps KR) and the KR is still there. My valve train doesn't seem to be any noisier than any other LS motor with a cam. I'm completely stumped and have no idea what to try next..
Here is the tune file for the truck and my very first log.