Quote:
Originally Posted by steffen707
Also, does lean burn also take a long time to start working? Or does that basically start working right away? I noticed VTEC was working relatively fast from engine stone cold to driving for only a few minutes. Maybe the 12v/16v operation of vtec-e doesn't require the car to be warmed up as much as say vtec on a B16 engine.
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The VTEC-E crossover will work right away on the D15Z1 motor since it only brings the motor up to 16v mode. The regular VTEC Honda motors need to have coolant temps up over 140*F and other variables met before VTEC will engage.
Lean burn will start to function once certain coolant temps, throttle positions, RPM conditions, and vacuum conditions are met. Basically though, once the car gets above 140-160*F the ECU will start to lean out the mixture as long as vacuum is held at 6in/hg or more.