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Is this a recommended upgrade? I have heard of people doing it but are there any benefits on our cars?
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03 Ford SVT Focus - Toms tune, Steeda mounts & stress bar, ORP, 66MM BBK TB, CFM UDP, Rota Grids
The Bad Cat (97 Merc Cougar XR7) - Flowmasters, MSD ignition, K&N intake, 19" Stern ST-4 Warps
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