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Does anyone know if the s550 can be tuned to pop, gurgle, "backfire" etc when letting off the throttle or when downshifting? My current tuner informed me there is no decel fuel cutoff or decal spark parameters that can be changed. I trust what he says to be true but I am wondering if there...

I tried looking for a thread but I gave up and decided to start a new one. Does anyone here have any experience will pulling the s550 fenders? I am trying to make some more clearance for my 315s in the rear so I dont scrub on every other dip in the road and to possibly get rid of some of my...