Quote:
Originally Posted by dre99gsx
Seems way more complicated than my conversion! AEM is a fantastic product. I also had to run the throttle body at a high frequency to reduce the while when operating. My hardest struggle with AEM was tuning the throttle body idle/closed loop. The BMW tb has a really strong spring making it difficult to get down to 2% and controlling the idle as well. I had to manually force the throttle plate closed while doing the auto-tune function to achieve full range.
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I'm retaining the IAC for that exact reason, actually. One of today's goals is to get the rest of the sensors wired and verify operation of the IAC solenoid.
I think I'll be playing with the overshoot and hysteresis on the AEM DBW loop as well, given the really strong throttle return spring I'm seeing the throttle plates overshoot to ~100% open and then settle at ~95% open.
I still find the 10kHz PWM extremely irritating, unfortunately.