Trying to decide on what mufflers to go with and what size. My kooks longtubes are 3 inch at the collector, I think I'm set on having dr.gas make an x pipe. But I'm thinking of running a 3.5 inch muffler but don't know which ones flow the best. I'm really after making power, not as much quieting the car down, but the open headers are ridiculously loud. I'm hoping the x-pipe will also quiet the car down.
So far I've read about spintechs, flowpaths, prochambers, bassani, hookers. Do you guys have any real world dyno comparisons? You guys making over 600 whp, what are you running?
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