I went 4 a cruise da otha day and my 4"stainless muffler broke off. i turned round 2mins l8r and it had been stolen!!! ne ways i have got a hot dog muffler 4 now (soon 2 get a RPS) ne way i thought that i might as well up grade the whole pipe from the flexi pipe to the muffler. what size pipe should i use for the best performance.
Note: I dont need a catalyic converter (i live in New Zealand) and should i still use the stock resonator?
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