Quote:
Originally Posted by steve99
This sounds normal to me.
Throttle body actuator make buzzing humming sound totally normal.
Also accelerator position reliative to throttle butterfly position is no linear its controlled my complex throttle maps in ecu.If your ecutek turbo tuned then you could also be running hybrid speed density tune.
The was some recient update to ecutek racerom to combat hesitations in cold weather on speed density tunes.
you need to talk to your tuner, i dont think you can do much diagnostics without loggong and knowing the tune setup.
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Sigh. I already sent logs to my tuner. They were very confused by them and told me it looks like a mechanical issue. I suspected TPS because one of the classic symptoms is shuddering/hesitation during acceleration, which is exactly what I'm seeing. Also I'm running the very latest tune from them as of last week. I still get random (jarring) hesitations during acceleration and initial shuddering when going WOT.