Tuning · F-Chassis Family

F-Chassis Tuning

The N20 / N55 / S55 / S63 generation — the bridge from analog to fully digital. Stage 1 through Stage 3 calibration paths, factory-feel ergonomics, and the parts depth to take any of them to the limit.

Chassis we support

The F-Chassis generation is where BMW's engineering crossed the digital threshold — N20, N55, S55, S63, all running ECUs that respond to a properly authored calibration the way the older platforms responded to standalone management. That's good news for tuning. It's also where the supporting-hardware story gets more interesting: charge cooling, fueling, and ignition all matter more on these cars than they did on the predecessor generation.

We've tuned every F-Chassis platform BMW sold in the US. The marquee cars (M3, M4, M2, M5) carry their own stage paths; the volume cars (335i / 340i / 235i / 240i / 435i / 440i) share the same calibration methodology with platform-specific tweaks. Same approach across the family: measured stages, real hardware recommendations, no overpromised numbers.

Parts that fit the F-Chassis family

Active Autowerke downpipe for BMW N20 / N26 — F22 / F30 / F32
Active Autowerke Downpipe — N20 / N26
N20,N26
$1,835
Active Autowerke catted downpipes with GESI cats for BMW S55 F80 M3 F82 M4 F87 M2
Active Autowerke Downpipes w/ GESI Cats — S55
S55
$3,515
Active Autowerke downpipes for BMW S63 F10 M5 F12 M6
Active Autowerke Downpipes — S63 (F10 M5 / F12 M6)
S63
$3,499
Active Autowerke downpipes for BMW S63 F10 M5 F12 M6
Active Autowerke Downpipes — S63 (F90 M5/M8, F95 X5M, F96 X6M)
S63
$3,485
Active Autowerke equal-length mid-pipe for BMW S55 F80 M3 F82 M4
Active Autowerke Equal-Length Mid-Pipe — S55
S55
$1,915
Active Autowerke GESI catted downpipes for BMW S63 F85 X5M F86 X6M
Active Autowerke GESI Catted Downpipes — S63 (X5M/X6M)
S63
$3,665
Active Autowerke Signature downpipe for BMW B58 (G20 G22 F30 F32)
Active Autowerke Signature Downpipe — B58
B58
$1,805
Active Autowerke Signature downpipe for BMW N55
Active Autowerke Signature Downpipe — N55
N55
$1,805
AIRTEC billet chargecooler upgrade for BMW S55 M2 M3 M4 (F80 F82 F87)
AIRTEC Billet Chargecooler Upgrade — S55
S55
$2,755
AIRTEC chargecooler radiator upgrade for BMW S55 — F80, F82, F83, F87
AIRTEC Chargecooler Radiator Upgrade — S55
S55
$1,695
AIRTEC chargecooler radiator for BMW B58 — F30, F32, G20, G22, G29, G42
AIRTEC Chargecooler Radiator — B58
B58
$1,375
AIRTEC intercooler upgrade for BMW N55 F20 F22 F30 F32 F87
AIRTEC Intercooler Upgrade — BMW N55
N55
$1,435
AIRTEC intercooler for MINI Cooper S F56 — B46/B48
AIRTEC Intercooler Upgrade — MINI Cooper S F56
B46 · B48
$1,155
AIRTEC Motorsport intercooler upgrade for B48 MINI Cooper S GP3
AIRTEC Intercooler Upgrade — MINI Cooper S GP3
B48
$1,565
AIRTEC Motorsport intercooler upgrade for B48 MINI JCW F56
AIRTEC Intercooler Upgrade — MINI JCW F56 (Motorsport)
B48,B46
$1,565
AIRTEC front-mount intercooler for BMW B48 M135i F40 and transverse B48/B46
AIRTEC Intercooler — BMW M135i (F40) & transverse B48
B48,B46
$1,565
AIRTEC Motorsport large-core intercooler for B48 MINI Cooper S F56
AIRTEC Motorsport Intercooler (Large Core) — MINI Cooper S F56
B48,B46,B37,B38
$1,565
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BMW 125i (3-Door) — Custom BM3 Tune (N20)
BMW 125i (3-Door) — Custom BM3 Tune (N20)
STAGES 1–3
N20
From $495
BMW F01 750i — Custom BM3 Tune (N63)
BMW F01 750i — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
BMW F02 750Li — Custom BM3 Tune (N63)
BMW F02 750Li — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
BMW F06 650i Gran Coupe — Custom BM3 Tune (N63)
BMW F06 650i Gran Coupe — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
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BMW F10 528i Sedan — Custom BM3 Tune (N20)
BMW F10 528i Sedan — Custom BM3 Tune (N20)
STAGES 1–3
N20
From $495
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BMW F10 535i Sedan — Custom BM3 Tune (N55)
BMW F10 535i Sedan — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
BMW F10 550i — Custom BM3 Tune (N63)
BMW F10 550i — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
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BMW F10 M5 (S63TU)
BMW F10 M5 (S63TU)
STAGES 1–3
S63TU
From $495
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BMW F11 535i Touring — Custom BM3 Tune (N55)
BMW F11 535i Touring — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
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BMW F12 640i Convertible — Custom BM3 Tune (N55)
BMW F12 640i Convertible — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
BMW F12 650i — Custom BM3 Tune (N63)
BMW F12 650i — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
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BMW F12 M6 Convertible (S63TU)
BMW F12 M6 Convertible (S63TU)
STAGES 1–3
S63TU
From $495
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BMW F13 640i Coupe — Custom BM3 Tune (N55)
BMW F13 640i Coupe — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
BMW F13 650i Coupe — Custom BM3 Tune (N63)
BMW F13 650i Coupe — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
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BMW F13 M6 Coupe (S63TU)
BMW F13 M6 Coupe (S63TU)
STAGES 1–3
S63TU
From $495
BMW F15 X5 50i — Custom BM3 Tune (N63)
BMW F15 X5 50i — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
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BMW F15 X5 xDrive35i — Custom BM3 Tune (N55)
BMW F15 X5 xDrive35i — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
BMW F16 X6 50i — Custom BM3 Tune (N63)
BMW F16 X6 50i — Custom BM3 Tune (N63)
STAGES 1–3
N63
From $495
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BMW F16 X6 xDrive35i — Custom BM3 Tune (N55)
BMW F16 X6 xDrive35i — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
BMW F22 228i — Custom BM3 Tune (N20)
BMW F22 228i — Custom BM3 Tune (N20)
STAGES 1–3
N20
From $495
BMW F22 230i — Custom BM3 Tune
BMW F22 230i — Custom BM3 Tune
STAGES 1–3
B48
From $495
BMW F22 M235i (N55) — Custom BM3 Tune
BMW F22 M235i (N55) — Custom BM3 Tune
STAGES 1–3
N55
From $495
BMW F22 M240i (B58) — Custom BM3 Tune
BMW F22 M240i (B58) — Custom BM3 Tune
STAGES 1–3
B58
From $495
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BMW F23 228i Convertible — Custom BM3 Tune (N20)
BMW F23 228i Convertible — Custom BM3 Tune (N20)
STAGES 1–3
N20
From $495
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BMW F23 230i Convertible — Custom BM3 Tune (B48)
BMW F23 230i Convertible — Custom BM3 Tune (B48)
STAGES 1–3
B48
From $495
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BMW F23 M240i Convertible — Custom BM3 Tune (...
BMW F23 M240i Convertible — Custom BM3 Tune (B58)
STAGES 1–3
B58
From $495
BMW F30 328i — Custom BM3 Tune (N20)
BMW F30 328i — Custom BM3 Tune (N20)
STAGES 1–3
N20
From $495
BMW F30 330i — Custom BM3 Tune
BMW F30 330i — Custom BM3 Tune
STAGES 1–3
B48
From $495
BMW F30 335i — Custom BM3 Tune (N55)
BMW F30 335i — Custom BM3 Tune (N55)
STAGES 1–3
N55
From $495
BMW F30 340i — Custom BM3 Tune
BMW F30 340i — Custom BM3 Tune
STAGES 1–3
B58
From $495
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BMW F31 330i Touring — Custom BM3 Tune (B48)
BMW F31 330i Touring — Custom BM3 Tune (B48)
STAGES 1–3
B48
From $495

Not sure which chassis is yours? Set your car in the picker — we'll filter the store to parts that fit.

Set vehicle
ANSWERED

Before 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.