BMS JB4 Upgrade Kit N54

Are you ready to take your turboed BMW to the next level in tuner performance?  Burger Motorsports has finally released a JB4 upgrade kit, for all the JB3 owners out there as well as people that want to buy a JB3 and upgrade it to be a JB4.  The new BMS JB4 gives you up to 80HP to the wheels on a completely stock car and up to 180HP to the wheels on a fully modified car. The JB4 features a simple plug and play installation harness and built in deletion of hidden "tuner detection" codes. Compatible with all ECU versions. With over 4500 in use and tens of millions of customer miles driven the JB3 has proven time and time again to be the safest and easiest way to extract the true potential from your N54 twin turbo!

NOTE: Dear JB4 Buyer, if you decide you only want the BMS JB4 upgrade kit, then once you have ordered please send in your old JB3 core to ModBargains at 1721 E. Lambert Road Unit C La Habra, CA 90631.  In order to get this great deal we need your old JB3 core before we ship out your new JB4 upgrade kit. Thank you

Modbargains Offers an easier way!
Because Modbargains understands that not all car enthusiasts are not wiring experts, we offer a second choice to get your JB3 upgraded.  If you already own a JB3 for a price of $149.99 you can send in your JB3 and we will upgrade it for you.  We use USPS priority mail; once received we will either have it upgraded and shipped back the same day or the day after to minimize the time you are without your JB3/JB4.

If you decide to let us upgrade your JB3 for you check out the tab about for more details!

If you have any further questions about our JB4 upgrade kit please give us a call at 714-582-3330

JB4 Features

• New CANbus module allows the JB4 to communicate with your vehicle like never before
• Code reading/deleting
• Optional in dash boost, timing, air/fuel, shift light, and IAT gauges
• Autotuning to optimize power and safety on an ongoing basis
• Buttery smooth new CANbus based integrated boost control system
• Map switching on the fly via steering wheel controls
• Built in downpipe fix
• Hot/cold oil temperature protection
• Progressive methanol integration
• Water pump remapping
• Gear dependent boost control/traction assist
• Drag launch mode
• Adaptive PID to optimize boost targeting
• Progressive meth mapping
• And many more to come...

New JB4 Pricing

• All other owners (those who bought used) will be charged $150.00
• If you want us to upgrade your JB3 for you it will be $20 which includes shipping back to you.

Can I use the same BMS USB cable with the JB4?
Yes! The USB cable is strongly suggested as many free firmware updates are planned.

JB4 Maps:
Currently the alpha is pretty stripped down and we'll be adding things as we go. Autotuning (both mapping and PID) as currently disabled.

• Map 0: Stock bypass. This is the only map you may use a BT cable with.
• Map 1: 13psi (suggested for most stock applications. Conservative mapping.)
• Map 2: 14.5psi (suggested for bolt on mods with 93 octane. Close to JB3 map 7.)
• Map 3: Progressive meth (see guide to enable)
• Map 4: Stock map w/ CAN active. Soon to be our economy map.
• Map 6: Custom map. Active but be careful with it.
• Map 7: 16.5psi. A light weight race map.

In addition to our performance mapping the JB4 features several "on the fly" user selectable maps including:

• 100% stock bypass map
• 4500rpm rev limited valet mode
• fuel economy map
• progressive methanol map
• race gas map

And unlike other flash and piggyback tunes that charge per the map and lock to your VIN the JB4 is 100% unlocked. Meaning you get access to every new feature we release free of charge and when your lease is up will be able to resell the JB4 without penalty

If you have any further questions about our JB4 mapping please give us a call at 714-582-3330

JB4 Installation Guides
For directions on how to modify your wiring harness for the JB4 click here.
For directions on how to install the new power wire tap for your JB4 click here. This is the only install change from the JB3PNP.
For the full JB4 PnP install guide click here.
How to setup your JB4 methanol mapping click here.

JB4 Dynos

If you have any further questions about installing the JB4 upgrade kit please give us a call at 714-582-3330

JB4 Optional In Dash Boost Gauge Demo

JB4 Steering Wheel Controls Preview

If you have any further questions about our JB4 upgrade kit please give us a call at 714-582-3330