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Using boost for mileage
So tonight a bunch of us were setting around talking about boosting engines IE: turbo or supercharger. After strongly considering everything, I've come to the conclusion that if one were to take a d15z1 Honda VX Engine that needs rebuilt and do the following:
Rebuild it with 8.0-8.5-1 compression pistons using a smaller turbo with an a/r of around .4-.5 creating a suitable boost range, definitely falling off way before redline, but giving ample boost during highway driving. I was thinking around 8-10lbs of boost. This would not necessarily net a higher hp figure or tq figure, but instead of using compression to create power, it would be using forced air.
I'm not sure if it would be worth the effort, but I honestly think a boosted d15 with low low compression, making about the same whp as a stock engine, would constantly get better mileage, due to internal efficiency. Of course it would have to be properly tuned, but this could also be done by hooking up a wide band gauge to the already present wide band o2 sensor and using an ApexI fuel controller.
I'm sure its been talked about, but using boost to create power, not compression, wouldn't that make the engine more efficient?
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