Quote Originally Posted by RS6Goals View Post
I find it hard to believe that I'm having difficulty locating build threads for this thing(considering its been out for a long time).
Welcome. The main issues with making huge hp numbers with this car is physical space (as in there isn't any) and heat management. The other is that the production numbers were extremely low so you're not going to find a ton of aftermarket support. 550whp is doable, but much more than that becomes cost prohibitive.

The main hp upgrades you'll find are: manual 6sp 01E swap, ECU tunes, (Wagner) intercoolers, and w/m to help manage heat. Both the intake and exhaust are quite good in stock form, especially the black "sound enhanced" exhaust. To get to 550whp you're probably also looking at upgraded turbos, a fuel pump, injectors, and a custom tune.

This guy apparently now owns the infamous Sportec "RS600" and is having AMD work it over. Looks like he's got a dyno run claiming 650whp: https://www.instagram.com/p/BbR5vntg...n-by=timhaugan