The exup holds back some pressure from idle to like 00rpm to create a good pulse for the exhaust to create a good scavenge effect after it opens I have a buddy with a 124ci and he has a manual exup on his handlebars that he pulls in at lower rpm to create a good exhaust pulse for a faster take offWest End Motorsports is your onestop source for Yamaha Road Star exhaust parts, including exhaust tips, baffles, and full pipes that gleam with chrome Give your Road Star the look and sound you want with a Yamaha Road Star custom exhaust Shop our selection todayIf you decide to go with any cheaper brands, you will risk premature fading or thin material Tools you would use are going to be a squeegee, spray bottle w/ soapy water, the vinyl, and a heating source (ie heat gun) Just prep the roof by washing with a clay bar and you are ready to set the vinyl
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