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Old 09-12-2012, 08:41 AM   #2 (permalink)
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Join Date: May 2009
Location: Western NC
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Beginning with #1 - to make the ECU think the car is coasting we need to feed a false vehicle speed signal to the ecu. The signal is a pulse type wave or half of a square wave. Here is a variable frequency and variable duty cycle square wave generator with a diode in line to block half of the wave. Now a 12v+ pulse signal can be sent to the ecu.

EDIT - This particular wave generator isn't really a full wave it's a half wave already, I didn't realize this until I saw it on the oscilloscope. There is no need for a diode.

Last edited by greasemonkee; 10-01-2012 at 09:20 PM..
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