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Old 08-21-2008, 10:54 PM   #1
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need a tune?

I'm putting 3.90's in a auto, will I need a tune? Will the shift points be o.k., or will the computer be out of wack with the new gears? Getting a programmer sooner or later, thinking about SCT. Is there a big advantage with the LiveWire over the 3?
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Old 08-21-2008, 11:03 PM   #2
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Re: need a tune?

You will need the tuner to adjust your spedometer. You're shift points will be fine, but the speedo will be off...you'll be going slower than it says you are and racking miles up quicker as well.
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Old 08-22-2008, 12:02 PM   #3
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Re: need a tune?

shift points will be fine, sct has great products but some tuners have issues with them, the excal2, or excal3 are good if you plan on having it dyno tuned in the future...
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Old 08-22-2008, 12:15 PM   #4
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Re: need a tune?

So whats a good tuner if your not planning on having it dyno tuned?
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