Mileage dropped almost 4 mpg!
7/16/05, 09:45 PM
#1
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I installed the mmr cold air intake and flashed the computer with the SCT X 87 octane tune. My mileage went from almost 21 mpg to 17 after the install. Will this go back up or am I going to live with the poor mileage? I must admit that I probably had my foot in it more after the mods. 
I want to try the 91 tune but am afraid that it might even be worse. Will there be a noticable gain in performance after doing the 91 tune?
I want to try the 91 tune but am afraid that it might even be worse. Will there be a noticable gain in performance after doing the 91 tune?
7/16/05, 10:31 PM
#2
I recommend you use an "Unleaded" right foot... 
7/16/05, 10:50 PM
#3
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Every perf mod I've made the mpg immediately went down on me. It always crept back up over a 300 mile or so period. Give it some time to find out. Yes, the 91 tune will give you more performance that you can feel.
Paul
Paul
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Fred_Garvin
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9/17/15 04:10 PM