I have a 2013 V-Coupe. Upper and Lower pulley, long tube stainless headers, 3 inch exhaust to the axle, port and polish throtle body K&N filter, tuned, putting out 600 hp to the rear wheels. Looking to open up the stock muffler and delete fiberglass filling. Would like a little louder sound. Sounds great now, but would like a little beefier sound. Plan later on going bigger lower pulley and cam. Putting out about 14-15 lbs. of boost, larger lower pulley will give me about 3-4 more pounds of boost shooting for about 18 lbs of boost when complete. Keep you all posted. Thx, Ernie...

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