Quote:
Originally Posted by turbovr41991
My HX engine seems to limit lean burn entry to about 2500 rpm. I have been told that is not normal and I am trying to figure out what is limiting me. After two tanks of “testing “ lean burn at 2500 RPM in 5th gear (or about 75 mph) I can say it stays in lean burn quite well at high speeds.
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The stock HX with a final drive of 3.750 (I think) and 14" wheels would have hit 2500 RPMs at a much lower speed than 75 mph. Your VX 3.250 final drive combined with wheels that are 14" instead of VX stock 13" may be the "problem" requiring a significantly higher speed to allow LB ... perhaps there is a way to fool the ECU? What sensors does it use to determine LB?