hey im just wondering about the jdm 4-1 and audm 4-2-1 itr header
are they both the same quality?
ive heard that the jdm is 2.5" and aus is 2.25" any reason to that?
but in retrospect they both give gains at top and mid end respectively?
tossing up to buying some jdm or aus headers
got a 99' vti-r
cheers
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