having knock issues in the 1800-2000k range tried lower timing issue still persist cant see anything that would be causing false knock truck is a 6.0 sierra denali AEM CAI and Aftermarket exhaust attached tune file and log file below
trans tune 2005 denali ECT_1, SPK _1 PE_5 TTM 1_MS 2_OL_O2dtc_LTFTdis adj_3_TCC _1 EGR_1 AFRADD_.hpt
wot cruise spark.hpl
If its a high mile engine, you migh be picking up piston slap or even lifters. Had a 5.3 do this because a lose flexplate bolt.
typically lifters because the stock pumps start to go out. my 6.0 junkyarder had low oil supply and the lifters ticked so bad we thought it was rod bearings. turned out the cam bearings wore out really bad and started dropping oil flow to the lifters.
2000 Ford Mustang - Top Sportsman
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