Quote:
Originally Posted by spoolin03
The Motordyne y-pipe is restrictive since the dual 2.5" pipes are forced to converge into 3" space twice
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It's a single merge and is more than enough for any N/A or mild boost application. Keep in mind oem header design have an output of 2.25"
But I do agree, F.I. is probably the best flowing exhaust on the market.