Everyone says that flowmasters are crap, well I had the 2 chamber thunder series and it was too dam loud on the hi-way, I decided to go with a flowmaster for an SUV, heck I decided if I loose a few horses so be it, well after installing the SUV muffler, it was very quiet but still a little throaty at WOT and on the Dyno, I still made 648 RWHP, Did not loose any horsepower at all....
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MoeHorsePower |