1
11H
GUEST
Hey all ...
I want you all with the 5.3 avalanche to do me a favor ... I need this observed with STOCK TUNING ... (No Hypertech, Diablo, or Superchips tuning please... Bone stock only...)
I want you to observe your Knock Retard on the highway with the cruise set at 70-75 MPH ... Preferably you can find some sloping stretch of road about 7 or 8 miles long to monitor ... (Or more would be better) ... Please just set the cruise, don't use your foot ...
I need this done with 100% 87 octane fuel ONLY ... You will need some sort of scan tool to observe KR ... The Predator, Autotap, etc ... This is for the non-boosted guys only with mild mods or stock avalanche 1500's ... No trailer, no passengers, just the truck and driver...
Please report feedback info when you can ... Please include mileage of truck, driveline related mods, gear ratio, 4x4 or 4x2, and year of avalanche ... I would also like rough elevation, fuel brand, and outside temp ... Then obviously your KR you are getting ... Example: If you blip .78 to 4.18 and that's the norm, give that ... And also the single most highest KR you read ...
... Now to my point ... My truck with current mods on the highway in 100 degree heat with cruise set above 65 MPH, blips some KR from between .30 to 5.5 on slight grades with the cruise set ... (usually I have been seeing mostly in the range of 1.5-2.5 with the 4 or 5 being rare) ... I am just letting the truck drive itself and I get this about 70% of the time ... Although I get no KR under any other condition unless I lug the motor in overdrive... WOT is 0.00 and under regular to aggressive acceleration I get 0.00 ... It only happens under my mentioned conditions under light load / cruise ... weird
... My truck has done this since new and I am trying to figure if it's part of GM's programming or something to be concerned about ... If I get similar feedback from you all, I will dismiss it as "GM designed tuning" ... BTW, I have not noticed any audible knock or pre-ignition on the dyno or on the road ...
Thanks in advance for your efforts...
11H
I want you all with the 5.3 avalanche to do me a favor ... I need this observed with STOCK TUNING ... (No Hypertech, Diablo, or Superchips tuning please... Bone stock only...)
I want you to observe your Knock Retard on the highway with the cruise set at 70-75 MPH ... Preferably you can find some sloping stretch of road about 7 or 8 miles long to monitor ... (Or more would be better) ... Please just set the cruise, don't use your foot ...
I need this done with 100% 87 octane fuel ONLY ... You will need some sort of scan tool to observe KR ... The Predator, Autotap, etc ... This is for the non-boosted guys only with mild mods or stock avalanche 1500's ... No trailer, no passengers, just the truck and driver...
Please report feedback info when you can ... Please include mileage of truck, driveline related mods, gear ratio, 4x4 or 4x2, and year of avalanche ... I would also like rough elevation, fuel brand, and outside temp ... Then obviously your KR you are getting ... Example: If you blip .78 to 4.18 and that's the norm, give that ... And also the single most highest KR you read ...
... Now to my point ... My truck with current mods on the highway in 100 degree heat with cruise set above 65 MPH, blips some KR from between .30 to 5.5 on slight grades with the cruise set ... (usually I have been seeing mostly in the range of 1.5-2.5 with the 4 or 5 being rare) ... I am just letting the truck drive itself and I get this about 70% of the time ... Although I get no KR under any other condition unless I lug the motor in overdrive... WOT is 0.00 and under regular to aggressive acceleration I get 0.00 ... It only happens under my mentioned conditions under light load / cruise ... weird
... My truck has done this since new and I am trying to figure if it's part of GM's programming or something to be concerned about ... If I get similar feedback from you all, I will dismiss it as "GM designed tuning" ... BTW, I have not noticed any audible knock or pre-ignition on the dyno or on the road ...
Thanks in advance for your efforts...
11H