BMS JB1 Stage 1 Tuner for BMW N20 N26 N55 S55 Type B TMAP – Plug and Play Power for M2 Competition, M135i, M235i, 335i, 435i, M3 and M4
Unlock instant, reliable power with the Burger Motorsports JB1 Stage 1 Tuner for BMW N20, N26, N55 and S55 engines using the Type B TMAP sensor (generally 2014 onwards). This proven plug and play BMW tuning box integrates with the factory DME to optimise boost, timing and fuelling for stronger midrange, reduced turbo lag and a sharper throttle response. It installs discreetly in the engine bay, is fully reversible and is compatible with all factory drive modes.
We run and recommend this upgrade. Our customers love the way it transforms the car while keeping OEM refinement. If you want a simple, cost‑effective BMW performance upgrade without a flash remap, the BMS JB1 Stage 1 is the UK favourite.
Why choose the BMS JB1 Stage 1
- Plug and play tuner connects to two easily accessible sensors for quick installation
- Works with factory DME to deliver smooth, safe, repeatable gains
- 64mhz processor samples sensors 800 times per second using dedicated 10 bit digital to analog converters for ultra‑refined response
- Auto‑detects N20, N55 or S55 via TMAP sensor voltage and adjusts mapping accordingly
- Discreet fit, removes without a trace, fuel economy unchanged during normal driving
- Compatible with all driving modes and OEM safety systems
Real‑world power gains
- N20: Up to 45 hp and 60 lb ft (approx. 35 whp and 50 wtq)
- N55: Up to 50 hp and 65 lb ft (approx. 40 whp and 55 wtq)
- S55: Up to 60 hp and 75 lb ft (approx. 50 whp and 60 wtq)
These gains make a massive difference on the road and track, especially on popular models like the BMW M2 Competition F87, BMW M3 F80, BMW M4 F82, BMW M135i F20 F21, BMW M235i F22 F23, BMW 335i F30 F31 and BMW 435i F32 F33 F36.
Compatibility – Type B TMAP sensor vehicles
Check your TMAP sensor: This JB1 Type B harness is for most 2014+ BMW models. Please verify your sensor type before ordering. See the image below for reference.
S55 Stage 1 applications
- BMW M2 Competition F87 2018+
- BMW M3 F80 2014+
- BMW M4 F82 2014+
N55 Stage 1 applications
- BMW 1 Series: 2014+ F20 F21 M135i
- BMW 2 Series: 2014+ F22 F23 M235i
- BMW 3 Series: 2014+ F30 F31 335i including xDrive and GT
- BMW 4 Series: 2014+ F32 F33 F36 435i including xDrive
- BMW 5 Series: 2014+ F07 535i GT, 2014+ F10 F11 535i including xDrive
- BMW 6 Series: 2014+ F12 F13 F06 640i models
- BMW X Series: 2014+ X1 N55 TwinPower, 2011+ X3 X5 X6 N55 TwinPower, 2017+ X4 M40i
N20 and N26 Stage 1 applications
- BMW 2 Series: 2014+ F22 F23 220i and 228i
- BMW 3 Series: 2014+ F30 F31 320i and 328i
- BMW 4 Series: 2014+ F32 F33 F36 420i and 428i
- BMW 5 Series: 2014–2016 F10 F11 520i and 528i
- BMW X Series: 2014+ X1 E84 N20, 2014+ X3 F25 N20
- BMW Z Series: 2014–2016 Z4 N20
Need the Type A harness for earlier cars. For 2011–2012 models with the Type A TMAP sensor, please see the BMS BMW N20 N26 N55 S55 Type A JB1 Stage 1 Tuner.
Installation and fitting
Installation is straightforward with only two connections in the engine bay. No coding required and the unit can be removed in minutes for servicing.
- Suitable for home installation with basic tools
- Works with all OEM drive modes
- Fully reversible
Prefer professional fitting. Book with Nforcd in Warwickshire. Email Sales@nforcd.com for a fitting quote and availability.
Compatibility check before dispatch
We verify fitment for your vehicle prior to shipping. Provide your UK registration or the last 7 digits of your VIN at checkout so we can confirm the correct part for your BMW.
Why buy your JB1 from Nforcd
- Authorised UK supplier of Burger Motorsports
- We have installed and used the JB1 on our own cars with excellent results
- Proven product with outstanding customer feedback and reliability
- UK support and optional in‑house fitting
Part number
F-S55-JB1
Manufacturer and warranty
Manufactured by: Burger Motorsports
Warranty: 5 Year BMS Repair Warranty
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Note: Figures quoted are manufacturer stated gains. Actual results may vary by vehicle condition, fuel quality and supporting hardware.