I just bought a greddy evo exhaust in 2 different parts. I bought an axle back from one person, and the catback piping with resonator from another. My question is, shouldnt the pipe coming from the cat be the same size as the pipe on the axle back portion of the exhaust? Both people said that the evo is for n/a applications, but the catback pipe is much smaller than the axle back portion. (guys im not saying you ripped me off!!!) I just want to clarify before installing/having pipes resized. Pictures would be AWESOME! TIA

Aem Cold Air AFX 55mm TB
Fidanza Cam Gears NGK Wires
AFX UDP Greddy Header
Gutted Cat Greddy Evo Catback
Energy Suspension MMI Eibach Sportlines
Tokico Blues...always more to come

Yes the piping should be the same size. Sounds like you got a axle back from a gst/x evo. It'll be fine to use, you just don't want it to go large to small.

Joel Baldridge, ASE Certified Master Technician, Audi Certified Expert Technician

im just going to have that pip reduced to 2.25. Does anyone have a picture of the actual exhaust?

Aem Cold Air AFX 55mm TB
Fidanza Cam Gears NGK Wires
AFX UDP Greddy Header
Gutted Cat Greddy Evo Catback
Energy Suspension MMI Eibach Sportlines
Tokico Blues...always more to come