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- 2017 SG Ford Focus RS -- 2003 Protege 5 -- 2016 Ford Expedition
Unless you have tons of car audio stuff, do the UDP. Trust me. Low-end gains + less A/C drain = win.
what does it have to do with audio stuff?
UDP runs the Alternator and stuff, if it's a smaller diameter than your audio stuff will be getting less power... I personally am going to go with a lightweight pulley set, stock diameter. I have a street car, I want it to be a street car.(drinks)