Mandrel bent is better because it keeps the size of the piping even on the inside, instead f having "kinks"... therefore increasing flow. I have a 2.25" mandrel bent midpipe with resonator that I had made a few weeks ago that I do not want anymore if you're interested. I'm waiting for JRSC to come out to determine the proper (larger) sizing. PM me if you're interested. ;)
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