Is there much of a difference between the standard cat back system and that of a milteck system etc?
I know theyre both the same diameter so was wondering if there is any form of restriction or back pressure that could hold the car back.
Plus that the fact Eddies run same intercooler and exhaust as mk 5 gti and they map comfortably to 300 stage 1 I'm wondering whether or not to stick with my stock as its in really good condition only recently bought a new oem recently
Cheers