I had a customer bring me a 2014 Stingray with an East Coast Supercharger Kit. The car had a bunch of driving issues and was breaking up underload. I take care of some issues and get it on the dyno. First pull it made 536 rwhp on 8psi with zero timing coming out anywhere, so I add a couple of degrees. Power went up to 578 rwhp still with zero timing removed any place. Its a Gen V, all they do is pull timing for everything, so I look deeper in the tune and find that ECS removed all the knock retard in the computer, knock retard amount is zero across the board. I turn it back on, installing stock numbers and bingo I have all the knock. I have 16 degrees at my limit and by 2800rpms it goes from zero to all 16 degrees, power drops to 398 rwhp. I want knock protection on, I see know reason to ever touch it, unless its just to cover up a horrible tune. Now my problem, no mater what I do it pulls all 16 degrees, this happens right at 2800, this also just happens to be the same rpm that the stock map sensor limit is reached. I tried everything, timing, fuel, torque tables, no matter what its always all the knock. If I zero out the knock amount table, i get full timing and a couple hundred more hp. I have also logged knock sensor voltage per cylinder and it will show the cylinders are not knocking, must be torque management. But i cant make it go away no matter what I do with torque. I dont understand why knock amount is linked to torque management, also no torque management timing is being removed. I even installed the tune from the last 2014 C7 procharged system I did. On that car it made 624 rwhp on 8 psi with zero to 1.5 degrees knock retard on the entire run. On this car is pulled 16 degrees at 2800 and feel on its ass.
Bad383TA