Thread: D15B vs D15Z1
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Old 01-26-2012, 09:58 PM   #14 (permalink)
Viceral
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Join Date: Jan 2012
Location: Denver
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Serenity - '88 Honda Crx Si
90 day: 41.7 mpg (US)
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Quote:
Originally Posted by drmiller100 View Post
si trans is pretty low geared I believe. Probably about what you should expect for mileage from that engine.
I don't know how it compares to other transmissions, but I know it has the highest gearing of any of the CRXs by quite a bit. That's a big part of why I'm debating throwing in the HF tranny. With the lower gearing I should be able to keep the RPMs lower and maintain lean burn longer (once the new ecu is chipped and installed), even at highway speeds. Right now in 5th gear 50 mph is the fastest I can go while keeping it under 2500 rpm, and typically I drive quite a bit faster than that.
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