I have had a prodrive back box, then Group N TSL, and now afterburner. All quite different in sound. The TSL gave a deeper rumble, the afterburner kind of thumps at low revs and screams at the top end.
One thing is though, if its just noise you are after, with a bugeye, even just changing the back box alone will make a massive difference so worth just trying that first before getting into decats/remaps etc....
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10 Years of Scoobies:04 WRX SL, 06 HAWK STI, 97 JDM WRX STI WAGON, 05 WRX STI, MK3 FOCUS RS, now Porsche Cayman S
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