Deatschwerks 550cc/min E46 M3 InjectorsAll Deatschwerks high flow fuel injectors are built using only quality OEM cores. In addition, each set is balanced to within a 2% flow variation. For our customers, this means better fitment, easier tuning, and increased reliability. All injectors are backed with a comprehensive 12 month warranty. Most aftermarket injectors go straight from the production line to the shipping department. At Deatschwerks, we have added what we consider a crucial step