ASR exhaust system for the E92 M3 from the headers back. We will be offering two systems, one from the rear section back and this one from the headers back. The rear section is designed for your everyday customer who cares more for the overall look and sound more than power. If you're looking for more power and don't mind a system that's a bit louder, the header back system is the way to go. The header back system is designed with ASR Stainless primary cats, ASR resonator with X-pipe, secondary cat deletes, and ASR mufflers with 92mm dual tips. The whole system is made of tig welded T304 Stainless and will not shoe any CEL codes for the cats because of our 02 bung design. We will be offering the same exhaust system for the E90 and the E93 as well.