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Old 09-20-2011, 10:38 AM   #33 (permalink)
ShadeTreeMech
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Join Date: Apr 2009
Location: Arkansas
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The Van - '97 Mercury Villager gs
90 day: 19.8 mpg (US)

Lyle the Kindly Viking - '99 Volvo V70
90 day: 25.82 mpg (US)
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Quote:
Originally Posted by Ryland View Post
With everything working correctly, you should see 50+ mpg with normal driving.
Is that ecomodder-normal driving, or normal people driving? There is a bit of a difference

Part of the point of smaller exhaust is to get rid of the stuff before it cools off and starts to weigh a bit more and slow down from lost momentum. (Some sports cars insulate the exhaust system.....I wonder why....my Maxima in good tune gets close to 30 mpg while being a quick 4 door sedan and it has insulated exhaust.) Kinda like how a river speeds up at a narrow bend, a narrow exhaust pipe will let the gasses exit quickly and preserve the momentum they got from the engine shoving them out.
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RIP Maxima 1997-2012


Quote:
Originally Posted by jamesqf View Post
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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