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Old Apr 6, 2003 | 11:35 AM
  #1  
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Default Gas Milage

What happens to the gas milage when you go to a performance rear end? Say install a 3:15 or a 3:42 gear ratio :confused:

The Big Dog
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Old Apr 6, 2003 | 12:41 PM
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Default Re: Gas Milage (TheBigDog)

Everything being equal you will lose a few MPG when you go to a numerically higher gear 3.15 to 3.42 for example.




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Old Apr 6, 2003 | 01:30 PM
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Default Re: Gas Milage (Mitch C)

:iagree: I changed from 2.73 to 3.42 & lost two mpg. but well worth it. After doing the change if I lost 5 mpg it would still be worth it :) I didn't buy my vet for gas milage :cheers:
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Old Apr 6, 2003 | 03:05 PM
  #4  
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Default Re: Gas Milage (Mitch C)

:iagree:
Everything being equal you will lose a few MPG when you go to a numerically higher gear 3.15 to 3.42 for example.
Nice exhaust, Mitch :thumbs:
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Old Apr 6, 2003 | 03:46 PM
  #5  
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Default Re: Gas Milage (clancy)

I get about 300-325 Miles per tank until the reserve fuel warning appears and i have an MN6 and 3.42, i drive fairly aggresivley.
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Old Apr 6, 2003 | 08:08 PM
  #6  
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Default Re: Gas Milage (Monster231)

I am at an overall 19.8 mpg average since I bought the car in Jan 2002. I have had most of the mods below since summer of last year except for the long tubes. I usually drive with the A/C on 7-8 months of the year.
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Old Apr 7, 2003 | 03:06 AM
  #7  
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Default Re: Gas Milage (RWhite)

Your mileage will go down, but that's also partly because you'll be driving more aggressively as well.
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Old Apr 7, 2003 | 07:58 AM
  #8  
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Default Re: Gas Milage (TheBigDog)

BigDog,
I have an A4 w/3:15's and typically avg 24-26 mpg. I think that's pretty good and it really doesn't vary much with the type of driving I do. Heavy on the pedal or lite. Had the 2:73's in my 97 coupe and the 3:15's are well worth the drop in mileage.

later,
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Old Apr 7, 2003 | 09:12 AM
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Default Re: Gas Milage (TheBigDog)

I get 21-23 with a mix of highway/city driving. And I'm not light on the Gas. When I take the Vette on a trip and do all highway driving I get 31 MPG!!
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Old Apr 7, 2003 | 08:07 PM
  #10  
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Default Re: Gas Milage (dendrizzi)

With my 3.15 I get about 25mpg on the highway and close 19-20 in town.
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