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Originally Posted by Blue02GT
You don't need the dyno tune unless you have an automatic. Those are all good mod's but I would agree with the others about the throttle body. If you don't already have it get the Accufab unit instead. Also 3.73's are great street gears, I had them but I race alot and now run 4.30's. If you think you might be spraying or adding a blower then 3.73's are a good choice. Good luck and enjoy the mod's.
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You dont even need a dyno tune if you are an auto. If you're reffering to stiffening the gears than you can just download the file onto the XCal that changes your gears shift points.