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Originally Posted by Sarris
I'm interested in hearing how much your gas mileage drops. Most report a 10+ mpg loss.
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Okay. Post needle shim modification, I tracked my gas mileage. After many miles and several fillups, here are my results:
MPG per fillup:
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1. 68
2. 65
3. 65
4. 64
5. 65
6. 65
Average = 65.3
I was averaging between 65 and 70mpg before the modification. I am seeing about a 7% drop in gas mileage now.
I drive a regular commute each day and take joy rides over the same roads. Most of my driving is at speeds between 40-50 mph. Maybe 20% is open road, 50-55+ mph. The terrain I drive on is generally flat with some rolling hills.
I am very happy with the performance increase - the slight drop in mileage is small price to pay.