Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Regular Unleaded Gas (stock) vs Premium Unleaded Gas (tuned)
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Old 03-26-2012, 01:01 AM   #24
DoomsdayFAN
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What I Drive: ~2006 ZX4 SE Sedan 2.0L~

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I'm talking about getting a tune for it. Are you going to get better gas mileage with an 87 tune, or are you going to get better gas mileage with a 91 tune? In other words, I'll be getting a tune either way, but which tune will get me better gas mileage? 87 or 91?
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