I've been planning my WRX project and finally decided on what turbo back solution I'm going to go with. For the downpipe, I'm going with Random Technology's 3" downpipe and midsection with CATs. This way I'm happy, and so will PA. For the CAT-back I'm still not sure if I'm going with the M2 cat-back of Vishnu's cat-back. Anyone have any experience with them? I've attached photos of the DP, anyone currently using this in their WRX? Thanks!

 

Here's a pic of the flange that connects to the turbo.

 

I couldn't find the WRX downpipe/uppipe on their website. Where did you find it?

here is a link to 12 cat-back systems being compared:
http://www.mattrandolph.com/wrx/cat-...omparisons.htm

M2 did not score very well, unfortunitly they did no include the Vishnu cat-back.

 

I found it at the followinf site: http://www.xcceleration.com/itemdetails.cfm83.htm its about halfway down the screen. Its made by random, but sold as a Xcceleration WRX '02-'03 Super Hi-Flow Down Pipe and Extension Pipe, with and without CATS.

 

Anyone else have any experience with this downpipe and cat-back?

 

good luck with measurements on vishnu and m2 for they are designed for their own full systems.