The S58 is the best M engine BMW has made in a decade, and it responds to fuel more than anything else. Flex fuel plus a proper tune is the single biggest change you can make to a G80, and we do a lot of them.
Bench unlock for the locked DMEs, handled here. You don't ship your ECU anywhere.
Sensor, harness, tune. Run E30, E50, E85, whatever the pump gives you that week, without flashing between maps.
Downpipes, charge pipes, intakes, intercoolers. We've fit most of what's on the market and have opinions about all of it.
Bootmod3 and MHD. Custom maps logged against the car in front of us, not a canned file.
Oil, plugs, diffs, brakes, the works. Track prep if you drive it like you should.
| Engine | 3.0 L twin-turbo inline six |
|---|---|
| Chassis | G80 M3 · G82 M4 · G83 M4 · G87 M2 · F97 X3M · F98 X4M |
| Common asks | Flex fuel, DME unlock, Stage 2, downpipes, custom tune |
| Tuning | Bootmod3 · MHD · custom maps |
Send what the car is, what it's doing, and what you want out of it. We'll come back with questions, not a price. Once we know what we're looking at, you get a real quote, and it doesn't move unless the car surprises us. Then you get photos while it's apart.
We'll ask the annoying questions, then give you a real number.