Quote:
Originally Posted by ft_sjo
I'm not convinced. My guess is its transient det/knock. If it only does it when the vehicle is rolling (in neutral on that video, I assume?) then the ECU is doing something different as it thinks the car is moving. The bypass valve on the supercharger doesn't know the car is moving, but the ECU does, and may be applying a different strategy.
Check your knock count with an OBD scanner or monitor it realtime with ecutek if you can to see if you get simultaneous knock events with the noise.
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In the video my foot was holding the clutch in. The car won't do it if its just in neutral or at a complete stop. Even with the launch control setp on, the vehicle will not make the noise. The clutch has to be in at low speed with throttle blip, WOT shifting gears or at speed in the mid to high rpm range when blip of the the throttle. I have tried many times to get it to do it at idle or rolling in neutral. No signs than at all.