exhaust and sizing on dc2 vti-r

[IEVAQ8]

3" cat back for stock Vtir man? :s

I'd probably stick to 2.25. 2.5 is alright might be pushing it a bit. No way 3 inch though.

Once u both have experience then can u plz comment....
No hard feelings...
But i have just done this on my bros stock vtir integra...
It has stock headers, stock cat, stock airbox minus resonator box under front guard...and a true 3inch cat back...
It breaths really well n makes noticable gains...
Dyno run still to b done...