I have the thermal axel back on right now and am installing the comptech 4-2-1 header soon. I want to get a b pipe because of all restrictions (bottle necks of the factory b pipe). I have a few qestions. One, to get the best result, what size and brand pipe should I get? Does thermal sell b pipes alone? If so, how much are they and were can I get a hold of one? Also, after putting my header and b pipe on, is it going to make my exhaust sound any louder or deeper? Thanks!

 

search the usual retailers and ask!

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your best bet is getting a b-pipe fabbed at an exhaust shop. the noise will depend on if there are any resonators used in it (and how many). I would recommend atleast one resonator in there...it will not affect performance (may actually help).