exhaust(not a flame question)
#1
exhaust(not a flame question)
86 n/a 5sp.... anyways i got my rb header friday, got it on today. sweet. now for the rest of the system. i have a single apexi n1 that i want going out the pass side. i want to put a resinator in it somewhere in between the two. so there will be no cats, but what size piping should i use? i was going to go 3" but im thinking that will be a bit too big. should i use 3" or 2.5"? whats the biggest gain. i dont care about it being loud, as long as its under 90Db.
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