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Discussion Starter #1
OK basically i'm looking for a downpipe portion to bolt onto my
stock exhaustmani.

i've got a jdm d15bvtec stock z6 header.
if you've ever looked at the merge collector on the stock header,
it's puny, I think it's like 1.5" or something!

Are there any stock downpipes from maybe another model that I can bolt up that would provide more flow? Or is modifying the stock one the only option?

Thanks

P.S.
Yes I know I could just get a completely new header,
that's not what this thread is about.
 
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