600cc - BMW M5 E39 S62، M3 E90/E92/E93 4.0L S65

Finally got these installed on my E39 M5 and the difference in throttle response is immediate. The matched set means all eight injectors flow identically, so no more hunting idle or rough spots under load.

The flow-matched set made installation worry-free on my S62, and the idle settled perfectly right after bleeding the system. Fuel trims look solid across the board, which is exactly what you want when you're chasing that extra headroom on boost.

Installed these on my E90 M3 and the car pulls noticeably smoother through the rev range. The 600cc flow rate is a perfect match for my bolt-on setup, and having all eight matched out of the box saved a lot of tuning hassle.