ok im still confused one person said it would go up the other down.
i dont really drive freeway so forget about that and what if i dont have a led foot and try to drive slowly to get better gas milage.
mechanically speeking what should it do?
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66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.
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