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Ive been offered a tommi mak exhaust for my Evo6 GSR at a very good price , the question is, is it worth changing to the tommi system from my standard system? ive been told its bigger bore and will improve performance, the system is as new as it was taken off the car from new and has been on a lockup ever since.
one other thing whats a HKS dumpvalve worth its new and unopened, with fitting kit for a evo 6?
one other thing whats a HKS dumpvalve worth its new and unopened, with fitting kit for a evo 6?