I tried to search but didnt find anything. Is there any difference between the TT Catback and the NA Catback?

 

On coupes and convertibles, no. 2+2 is different. They're longer, obviously.

 

I looked around and haven't found anything to differentiate between the two. There has to be something though; otherwise they'd just sell a Z32 catback system.

 

Thats what I thought. I was going to buy the Apexi Hybrid Megaphone Cat-back from overboost.com, and is specified for twin turbo. I got on their live help site, and the guy said it would only work for twin turbo. I continued to question him saying they should be identical(factory exhausts), and he said that the paperwork he has at his disposal said its only for TT. Hmmmm

 

I pulled up the STEALIN website. They have different part numbers for the same TT (503290DT) and N/A (503250DT) catback system (Dual tip stainless steel), but the description and price of each item is the same. The only thing I can think of is the HICAS. When I was under my car this weekend, the exhaust pipe came within about 1/2" of the Hicas steering arms on each side. Maybe the N/A has slightly different bends. Maybe. I really don't know. You'd think that if they were different, then the TT would be more expensive. Just because it's for the TT.