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      03-31-2012, 01:54 AM   #4
kitw
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Drives: 2011 E92 Jet Black M3 (#6!)
Join Date: Jun 2007
Location: Bay Area, CA

iTrader: (15)

The welds look nice, good penetration from what I can see. I don't really like the abrupt transition from the factory flange where the primary cats were to the straight pipe, that seems to be a flow disruption. Probably close to the Turner Test pipes, but that transition means they won't flow as well. But, at least it's a step above normal muffler shop work and keeps the decently well flowing stock hydroformed parts and no crush bends, so good job there.