Stage pricing for the F83
Cooling, downpipe, fueling — the ceiling worth chasing on factory turbos.
Build this stage Stage 2 methodologyBigger fueling, often a hybrid or Phantom turbo. Per-car.
Build this stage Stage 3 methodologyThe F83 is the F82 M4 with its roof removed, and the trade is exactly what you'd expect. The folding hardtop adds weight and a touch of flex, so it gives up a sliver of the coupe's edge for open-air motoring. For a lot of buyers that's the entire point: this is the M4 you drive for the experience, not the stopwatch.
Mechanically it's pure F82 — the S55 twin-turbo six (425 hp, 444 Competition), and the same first job every S55 build starts with: the crank hub (full story on the F80 page). Sort that, and the stock-turbo headroom is identical to the coupe's — 580–630+ wheel horsepower on E85.
So the open-top M4 isn't a different car under the skin. It's the same potent, crank-hub-gated S55 platform, in the body for people who'd rather feel the engine than chase a time. Build it exactly the same; just know you're carrying a convertible's weight while you do.
Parts that fit the F83
DR Forged wheels for the F83
Custom, made-to-order forged wheels — built to your car's spec, so any of them fits the F83. Pick the look; we build the fitment.
Tech essays for the F83
Upcoming events
Cars & Coffee Delray Beach
Cars & Coffee Miami — Jungle Island Father's Day
Supercar Sundays Florida — Father's Day Car Show
Set the F83 as your garage vehicle and the rest of the store filters to what fits it.
Set vehicleBefore you tune.
Will my dealer flag the tune at service?
The bootmod3 flash is non-destructive and reversible. Revert to stock before a dealer appointment and the ECU is back to factory in a few minutes; re-flash after service. We document the revert step in writing so the next person opening your file knows what's there.
Is it safe for the engine?
Every tune we ship has been datalogged on the car it was written for. We look at knock counts, fuel trims, boost behavior, and intake temps before we sign off. If the numbers don't sit right, we revise. That review and the revision policy are built into what the tune costs.
How long until I have a working tune?
Most calibrations turn around in a few days. We log, review, and revise before anything ships — we would rather get it right than get it out fast.
Can I go back to stock?
Yes. bootmod3 supports a stock revert that returns the ECU to factory calibration in under five minutes. The flash is non-destructive — nothing in the BMW DME is permanently modified. Most owners revert before trade-in.