2.25" piping is good enough for 2.5RS. i think 2.5" will lose some low end torque but some improvement on the high end.
best Intermediate Pipe size for MY02RS?
what is the best size for MY02RS when it comes to selecting an intermediate pipe? Is 3" for WRX only? I've heard 2.5 and 2.25... what do you guys have?
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