Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Flash your ECU and unleash the power your BMW was meant to have.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms CARB certified for sale in all 50 states For BMWs with a model year up to 2011 only, will not work with 2012+ models
Get up to +75 hp and +105 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Increase power without sacrificing reliability
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Add up to 40hp and 80lbs/ft. torque to your N55 today! For vehicles with production date from 03/2011
Brand:
ES#:
3149349
Mfg#:
77-46311
Ships in 2 Business Days
20% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$563.99
This product was last offered at the strikethrough price on 01-28-2026
Increase power without sacrificing reliability
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Adds up to 40hp and 51lbs. x ft. torque - instantly!
Brand:
ES#:
2703096
Mfg#:
77-46302
Ships in 2 Business Days
20% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$498.75
This product was last offered at the strikethrough price on 01-28-2026
Plug & play power — gain up to 40 horsepower in under one minute! 50 state legal performance!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms CARB Approved - Legal in All 50 States! CARB certified for sale in all 50 states
A piggy back tuner that allows you to adjust throttle response for peak performance.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Get up to +51 hp and +70 lb-ft through a safe and easy to use tuning module from RaceChip *Open Box - New Product*
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Unlock the hidden potential from your BMW with a safe and easy to use module from RaceChip. Options for both harness types A and B
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms BMW used two different engine harnesses, please confirm if you have type A or B before ordering
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Add power and performance with special ECU software upgrades from recognized tuning leaders like APR, 034Motorsport, Unitronic, Integrated Engineering. Let our trained support staff show you how to pick the performance ECU software upgrade that suits your driving preferences and budget.
Lifetime Replacement
