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Originally Posted by DC2R
Very impressive. How long have you had this on car? Can you speak to gas mileage?
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I haven't been driving it long enough to graph the milage change, but it should be close to stock milage. I set my odometer every fill up and I'll report back if there is a significant difference.
I have about 12k miles, and was averaging just under 28 (27.8) MPG. I tend to have a lead foot. If I drove more resonably I'm sure it would be much better.
Essentially the mods gave 40% for Air in the front, 40% more flow out the back. This would make the engine run lean. So the ECU tune allowed for more fuel when needed to handle the extra Air. Under normal driving this shouldn't change the milage much, just under heavy load. But, more air + More fuel = More power.