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Yes. There is the choice of a 87 octane tune or a performance tune that requires a minimum of 91 octane (93 is better). I have loaded and tried both in my 04 and there is not a huge difference between the 87 and the performance tune. Both will smooth out your shifts, allow you to adjust the fan and in my case, adjust the speedometer for the 4.56 gears. I have been very happy with my Predator.
Last edited by Asphalt_04 : 02-08-2008 at 03:23 PM.
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