Economy of boost
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OK, more like economy with boost, here are my less-than-scientific observations (each time I get gas I fill up and reset the trip meter):
My stock greddy system would routinely give me around 27 mpg at wastegate 5.5 psi.
My greddy system with a BEGi FMU in place of the vortec 12:1 gave me 26 mpg at 6 psi and 24 mpg at 9 psi.
My greddy system with a retuned double check valve BEGi FMU gives me 27 mpg at 9-10 psi.
My stock greddy system would routinely give me around 27 mpg at wastegate 5.5 psi.
My greddy system with a BEGi FMU in place of the vortec 12:1 gave me 26 mpg at 6 psi and 24 mpg at 9 psi.
My greddy system with a retuned double check valve BEGi FMU gives me 27 mpg at 9-10 psi.
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I certainly don't get that will all in town driving. Sometimes if I do a great deal of highway I have seen some pretty high numbers, if fact almost 30 once, but usually with a mix I get between 20 and 22.
-Michael-
-Michael-
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Car pulls much harder, but there is also far greater responsiveness getting into boost and at lower boost. And I expect another big improvement with an added bleed through an adjustable release valve--or whatever simple solution Corky comes up with compared to my elaborate (and evil) plans.
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I had the same problem when I was in MI. If you do ANY short trip driving without letting the car fully warm-up you'll see this. The car dumps a hell of a lot of fuel through during warm up enrichment. For a while I was averaging 14-15mpg when I was just driving back and forth to school (less than a mile from home). Now that I'm back in TX and commuting 20ish miles to work I'm back at 27 or so.
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