dynatech system

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11-12-2007, 07:36 PM

#11

silveradol33

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You can actually tell a difference when u bolt them on? I also hear ur supposed to have a tune or re-tune after install?

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11-12-2007, 07:51 PM

#12

03sierraslt

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You will need a tune or retune to get the most out of them..

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