I use the Motordgne XYZ Y pipe with my PPE's. I also have a HFC and resonator module to use with the Y pipe. With the Tanabe exhaust and hfc installed, there is no rasp once warmed up. There is a hint when the pipes are cold. I just posted videos earlier today in my journal. My last couple posts were vids. Yours of course won't sound 100% like mine but it should be a good idea.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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