How much power does the JB+ add?

Burger Tuning rates the default +3 psi setting at about 30 hp and 40 lb-ft at the wheels. Turning it up to +4 psi adds a little more.

Does it work on my N54 car?

It fits 2006-2010 N54 twin-turbo cars including the 335i, 335xi, 135i, 535i and Z4, plus 2011-2013 335is. It works with all ECU versions and transmissions.

Do I need to open the ECU to install it?

No. It plugs in at the TMAP sensor in the engine bay, so the ECU stays sealed and installation takes minutes without tools.

The JB+ is a simple fixed boost bump with no logging or map switching. The JB4 costs more and adds tuning control, logging and code reading for modified cars.

Will it void my warranty or throw codes?

It is removable, so the car can be returned to stock, but any tune can affect warranty coverage. It is designed not to trigger codes from installation, though high boost settings can on some cars.

What fuel should I run?

Use premium pump gas. Higher boost settings put more load on the turbos and clutch, so keep the default setting on a stock car.

What do buyers say about the BMW N54 JB Plus (JB+) Quick Install Performance Tuner?

Rated 4.9 out of 5 from 7 ratings.

Where can I buy the BMW N54 JB Plus (JB+) Quick Install Performance Tuner?

12 stores we checked sell it, including eBay, Burger Motorsports, Enjuku Racing, UroTuning, USP Motorsports.

BMW N54 JB Plus (JB+) Quick Install Performance Tuner

Q: Where is the BMW N54 JB Plus (JB+) Quick Install Performance Tuner cheapest?

At eBay, for $130.00, 35% under what the other stores charge, as of our latest check.

Best price now

$130.00at eBayChecked 1 h ago

35% under what the other stores charge

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What reviewers say

Owners of 335i, 135i and 535i cars describe the JB+ as an easy, low-effort bump in power that is felt right away and can be removed in minutes. Most praise the install and the stock-like drivability; some note the gain is modest next to a JB4 or flash tune.

What people mention

Power gainPraisedOwners report a clear increase in pull, strongest in the mid-range.
InstallationPraisedFitting at the TMAP sensor is quick and needs no tools.
DrivabilityPraisedThrottle response and everyday manners stay close to stock.
Tuning depthMixedSome find the fixed boost bump limited next to a JB4 or flash tune.
Boost settingsMixedTurning boost up can bring codes or limp mode on some cars.

About the BMW N54 JB Plus (JB+) Quick Install Performance Tuner

The JB+ is a plug-in performance tuner for BMW vehicles with the N54 3.0L twin-turbocharged 6-cylinder engine. At its default setting of +3 psi boost, it adds an average of 30 horsepower and 40 lb-ft of torque at the wheels. Boost can be adjusted up to +4 psi for more power.

It installs without entering the ECU area, so there is no risk of triggering codes. No tools are needed, and it can be installed and removed in minutes. It works with all ECU versions and transmissions on the supported N54 models.

The tuner is made in the USA and has a 5-year warranty. It is 50-state emissions legal, with CARB approval under Executive Order (EO) No. D-744-3 for all 2007-2014 BMW models with the N54 engine.

Engine

N54 3.0L twin-turbocharged 6-cylinder

Power gain

Average of 30 hp and 40 lb-ft of torque at the wheels at +3 psi

Boost

Default +3 psi, adjustable up to +4 psi

Installation

Tool-free, no ECU access required

Compatibility

All ECU versions and transmissions on supported N54 models

Fits 1 Series

2008-2010 135i (E82/E88), including Coupe and Convertible; 2011 1M Coupe (E82)