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Discussion Starter #1
Hello,
Is the RMM downpipe full 3 inches all the way through? Or does it neck down at the flange?

Is the Tanabe Racing exhaust for a 93-98 MKIV full 3 inches or does it neck down to fit the stock cat? Also does the RMM downpipe and Tanabe exhaust bolt up together size wise?

I had a DSM and the apexi N1 exhaust came with a adapter to fit the stock cat the N1 or a GSX is full 3 inches all the way through so when you mated the N1 exhaust to the N1 down pipe you had a true 3 inch exhaust from turbo to tip.

Is that the same with a MKIV?

THANX
 
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Discussion Starter #2
It looks like it necks down 1/4", but it only does that so you can use the factory flanges. :)
 
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TROY

TROY,
Are you talking about the RMM down pipe or Tanabe exhaust?
Can anyone enlighten me on this?
THANX
 
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