BMS BMW N54 N55 3.5 Bar TMAP Adapter for 135i and 335i - the plug and play TMAP adaptor harness that lets you run a BMW 3.5 bar TMAP sensor on your N54 or N55 engine for higher boost control and seamless JB4 tuning. Perfect for big turbo and high-boost builds, this BMS TMAP adapter unlocks the JB4 maximum boost range from 20 psi up to 36 psi, delivering reliable boost reference and cleaner data for tuning on BMW 135i and BMW 335i performance cars.
Why buy the BMS 3.5 Bar TMAP Adapter from Nforcd
- Genuine Burger Motorsports TMAP adapter - trusted by tuners and enthusiasts
- Plug and play PNP harness for quick, tidy installation on N54 and N55
- Supports higher boost targets - ideal for hybrid or larger turbo setups
- We use this adapter on customer N54 and N55 builds and feedback has been excellent
Key features
- Adapts a BMW 3.5 bar TMAP sensor to N54 and N55 engines
- Raises JB4 boost control range from 20 psi to 36 psi
- Clean OEM-style fitment with a plug and play adaptor
- Robust connectors designed for engine bay conditions
Important notes
- You will also need the OEM BMW 3.5 bar pressure sensor for this to work.
- N55 owners: The BMS adapter is needed to install the BMW 3.5 bar pressure sensor on Type A connector cars. You do not need the BMS adapter if your N55 has the Type B connector.
- After installation, update the JB4 3.5 bar TMAP sensor value to 1 in the JB4 user adjustment page.
How to check if you have Connection A or B
Visually compare your existing TMAP plug to the image below to confirm if you have Type A or Type B before ordering.
Compatibility
Compatible with BMW N54 and N55 engines, including BMW 135i and BMW 335i. If you have an N55 engine, please check whether you have Connection A or B.
Installation and setup
- Plug and play install between the factory loom and the 3.5 bar TMAP sensor
- Requires OEM BMW 3.5 bar TMAP pressure sensor
- Set JB4 3.5 bar TMAP value to 1 after installation
Professional fitting available: Nforcd offer in-house installation in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility check before dispatch
To ensure this part fits your vehicle, we run a compatibility check prior to dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout.
Part number
E-N54-JB4UG-TMAP-35
Manufacturer
Burger Motorsports / Burger Tuning (BMS)
Warranty
BMS do not offer warranty on the TMAP Adapter.
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