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Potential Tuner
Need help 3bar SD ignition advance problem
Corvette LS1 383 Twin Turbo
3bar SD with 2.5bar MAP sensor
15psi boost
I have a problem when tuning in 3bar SD mode above 8psi. Base spark advance have 15 degrees the reality is 8-13 degrees.
I turned off the correction:IAT, ECT, AFR, Torque. I have no idea what is wrong.
Log frame:245-288
TT sd 3bar RTT 16psi.hpt
test 16psi.hpl
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Senior Tuner
Disable spark smoothing and try again, on right side of advance tab under general.
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My experience is that you need to disable burst knock on boosted vehicles. The spark smoothing table is active when your foot is off the throttle, so it helps coasting surge/buck.
Russ Kemp
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Potential Tuner
Thank you for your help. Tomorrow will test the new setting, with disable burst knock.