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wbr header??


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So i just bought a wbr el header and from first impressions of it is that its a quality piece, welds look decent and im pretty happy with it so far.So i measured the ID of the piping at the flange where the UP would connect to, and it was 1 11/16" now my FMS UP has an ID of 2 1/4" were its connects to the header.Will this hurt performance at all or spool up time??
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IIRC the stock uppipe inlet/outlet diameter is 45mm. And by the way, most subaru turbo's (VF, etc) have the same exhaust inlet size. All the stock stuff is pretty well port matched actually


Having a huge uppipe, that is not port matched is bad, IMHO.

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