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Old Jan 9, 2006 | 09:57 AM
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Default Everyone with a dynotune

Does it actually improve fuel economy, or does it cause the car to over-calculate?

On the drive down this weekend I was averaging about 27 mpg at 74 and on the way back it was showing 31.

I guess I'll check it manually to verify.
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Old Jan 9, 2006 | 10:23 AM
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From: Vette-hid.com Lost in DFW texas
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St. Jude Donor '06-'07
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Originally Posted by Cobra4B
Does it actually improve fuel economy, or does it cause the car to over-calculate?

On the drive down this weekend I was averaging about 27 mpg at 74 and on the way back it was showing 31.

I guess I'll check it manually to verify.
Depends on year of car but yes the factory has them running a little rich.
97-2001 the car runs much better all around.
2002-2004 help's allot but not as much
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Old Jan 9, 2006 | 10:31 AM
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Cool... I have an '01. I'll try and verify it manually my next road trip.
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Old Jan 9, 2006 | 11:36 AM
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We have seen a increase in gas mileage. The vettes change about 1-2 miles per gallon. Then trucks see about 3-4 miles per gallon, cruising not pulling.

Randy
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Old Jan 9, 2006 | 05:51 PM
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St. Jude Donor '05-'10-'12, '15
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Originally Posted by NOT-MEE
Depends on year of car but yes the factory has them running a little rich.
97-2001 the car runs much better all around.
2002-2004 help's allot but not as much
In stock tune my y2k dipped to 10.8 above 4000rpm
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Old Jan 9, 2006 | 06:59 PM
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St. Jude Donor '05-'06
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Stock I was 29MPH. With the headers, up to 30. Small cam 31.x. Now I got 32.9 on the way home. I love tooling around in 6th!
Dave
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