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ORIGINAL: MustangGT0405
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ORIGINAL: GidyupGo
It always amazes me when someones says they get 1 mpg better with something. I mean, is that really measureable? Ambient air temp changes from 1 day to the next, foot is a little heavier, got a different brand of fuel etc.... When someone makes a claim like that, I have to ask if the conditions were controlled or not and what were the variables.
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I didnt buy my CAI for better MPG but I was trying to provide the original poster my impression. I drive the exact same roads to work every day 5-6 days a week. I had the car stock for 6 months and average around 18.5MPG regularly, ie 50+ tanks of gas. I put the CAI and Tune on and running the 87perf tune I get 20.5MPG regulary ie 20+ tanks of gas. The rest of the time I switch between 93 Race and 93 torque just for fun and it really fluctuates but no matter how I drive I have never gotten worse than 18MPG for a whole tank. City driving I can watch the MPG drop quickly and on the highway I can see it climb quickly, much more than stock.
Personally I am happy with anything above 12MPG that I got out of my last mustang.
I recommend the lightening and free mechanical losses because that would also improve MPG but even better power.
But hey I am not comsumer reports I am only letting you know what I see with this mod.
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I've had my Steeda CAI and Brenspeed 93 tune for about a month now, and that seems to match my experience. Overall, I was averaging about 20 MPG, and that's about what I'm getting now. I drive a mix of surface streets and freeway on drive to work. I think part of what's going on in my case is that since the throttle is much more responsive, it's harder to accelerate as gently from a stop. Also, since it's so much more fun, you tend to put your foot in it.
I also agree with the other point that was brought up in another post. The amount of increase in gas mileage will be hard to measure because of varying traffic conditions, weather, and other variables. I mean, heck, your mood can affect your gas mileage. Depends on how how gentle you are with that little pedal under your right foot. You could test before & after the install on the same stretch of highway with the cruise control engaged, but that still only tells you about the gas mileage you'll get on a highway with the cruise control engaged.
One thing's for sure, you won't see an overwhelming increase in gas mileage after you install a CAI / tune. But you will see a very positive improvement in the responsiveness of your car. I does, as many have pointed out, "wake up your car."