Hang Time: Exploiting ECU Fuel Maps for Fuel Efficiency - Toyota Yaris Forums

Sparcoboy · 04-25-2012, 04:18 AM

I've tried this but for me it wasn't worth the effort. Doing the same trip every day, I had to fuel up sooner with this technique. The problem is, I think, that in order to accelerate back to your higher speed you burn more fuel than you saved by lifting the accelerator a bit. As long as you're decelerating you burn less fuel, meaning more mpg but the time you accelerate you get only half the mpg's than before. For me driving at a constant speed has proven the best.

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04-25-2012, 04:18 AM	#15
Sparcoboy Drives: 2008 XP9 by Sparco Join Date: Nov 2011 Location: Belgium Posts: 70	I've tried this but for me it wasn't worth the effort. Doing the same trip every day, I had to fuel up sooner with this technique. The problem is, I think, that in order to accelerate back to your higher speed you burn more fuel than you saved by lifting the accelerator a bit. As long as you're decelerating you burn less fuel, meaning more mpg but the time you accelerate you get only half the mpg's than before. For me driving at a constant speed has proven the best.