Well... I'm fitting this system to my FR. It is also 3'' and fits Golf GTI and FR.
This is actually Jetex system.... Simons in Sweden makes all systems for them. And as because they probably exactly the guys in need of Cupra then my question is - doesn't that one fit also Cupra? Whats the difference there (besides turbo ofcourse)?
The turbo is different, and this may cause more noise with more air flowing back out the turbo. Also, the single oval exit on the Cupra has not yet been done by aftermarket exhaust companies as they always (wrongly IMO) assume that everyone who wants to change an exhaust on a new car would something like that one above, with twin pipes on both sides, which in my humble opinion, is way over the top.
If Milltek do it as close to OEM as they can, I will be a happy camper. All I really want it an exhaust with a nice rip, not too loud, and one that is not going to fall to bits after 2 winters.
Edit: The K04 twin scroll in the Cupra is not really a "small" turbo when you consider that in conjunction with a 3" turbo back, panel filter and remap, that 330ish bhp is possible.
I am not going to bother mapping mine now though. I reckon the performance is adequate, and the rip I am hoping for from the non resonated system should make it sound as well as it goes