I've noticed that most downpipes are 3", but when it comes to midpipes, some are 3" and some are 2.75".

It seems to make sense to go with a 3" midpipe if you've got a 3" downpipe.

What is the inner-diameter on the midpipe you use?



(currently I have a Random Technology high-flow cat downpipe and a Pettit Racing high-flow main cat)

 

ahhh come on guys...no one knows the diameter of their midpipe?

 

3 inches all the way through... dp 3inc rx7 store mp 3in catback 3inc

 

when you measure the diameter, are you talking about the inner dimeter (ID) or the outer diameter (OD)?

i was asking because i noticed on the recent clubrx.org article (see link below) he measured his mid-pipe to be 70mm ID and 76mm OD. (this converts to about 2.75" ID and 3" OD.

link:
http://www.clubrx.org/default.asp?id...ntent=60&mnu=5

 

come on guys...no one can give me this answer?

when places advertise for a 3" downpipe are they talking about the ID or the OD?!

 

it usually means OD

 

awesome, thanks. glad to hear that.