| perfect. I also have the 2.5" DP's and TP's. From what SZ and Ztune told me, having 3" expansion DP's and 3" to 2.5" TP's kills the rasp that we usually here around 2500 RPM. With that being said, the rasp is not too bad with the 2.5" DP's and TP's on the 2.5" setup. I would say, if you can, go for a 3" catback with 3" expansion DP's and TP's. if you don't mind the single tips. Typically, the single tip exhausts are quieter than the dual tip ones.
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