BMW B38/B46/B48/B58 JB4 Tuner

BMW B38/B46/B48/B58 JB4 TunerPower gains of up to 100hp on a stock vehicle without the risks of flashing! Units shipped 3 5 2021 or later include a free electronic wastegate (EWG) connector preinstalled in the JB4 harness! The JB4 is the most advanced and highly featured tuning system available for your B58 and B48 vehicle. Power gains are up to 80hp to the wheels (100hp crank) on a completely stock car on pump gas for a B58 and up to 40hp to the wheels (55hp crank) for a B48,

the valves are opened

This upgrade also offers improved turbo spool as well as an increase in transient response

Compatible with any chargepipe on the market

Since we are able to reproduce the factory "ball" joint v-band connector

and larger turbos are even higher

Our Rear Traction Links feature gun drilled 2024 Aluminum center links

1 -10ORB to -10 AN Male Fitting

304 stainless steel 2-1/2" tubing

L6 - Gas2020 BMW X3M

Dual Turbine Oil Seals-Large Diameter 360 Thrust Upgrade-Extensive Turbofold Modifications and Machining-VSR Balanced of courseWe recommend our N55 High Flow Inlet Pipe with the Stage 2

We use a 200 cell metallic core

This Y-pipe connects to the single midpipe with a slip-fit connection and then utilizes the two 2