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Old 07-13-2011, 11:47 PM   #164 (permalink)
dcb
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pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

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Quote:
Originally Posted by t vago View Post
Trouble is, I'm not sure if doing either of these things would actually gain any FE on my truck...
fwiw, the few bsfc charts I have looked at pretty much all indicate improved mpg with lower ratio than stock, the left hook on the hp curve heads north and bsfc improves. Not a guarantee of course.

You might look at the ratios in a manual trans too combined with the low auto rear end. If the junkyard/craigslist/ebay has a parts truck with a stick it can be done cheaply.

you might get a clue on bsfc map by plugging in a laptop/obd scanner and log the crap out of everything and try to sort it that way. It might be worth giving Smokey's Dyno a call too.

Just suggestions, nice job on the aero, sorry for the mini hijack.
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