Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Getting the most out of lean burn (Honda)

greasemonkee · 09-12-2012, 09:41 AM

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.

09-12-2012, 09:41 AM	#2 (permalink)
greasemonkee EcoModding Apprentice Join Date: May 2009 Location: Western NC Posts: 177 Thanks: 3 Thanked 43 Times in 19 Posts	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 10:20 PM..