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
Max gains of up to +69 HP and +55 lb-ft TRQ (Crank); +60 HP and +49 lb-ft TRQ (Wheel)
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
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
Brand:
ES#:
4884002
Mfg#:
999982BMW
Special Order: No Guaranteed ETA
ON SALE!
SAVE 10%
$259.00
This product was last offered at the strikethrough price on 07-01-2026
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
Enable flex-fuel features on your tuned BMW with this plug and play kit! Compatible with MHD or ECUTEK tunes and works with the stock or TU High Pressure Fuel Pump
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms S58 Engines - Automatic Transmission (Any HPFP)
Brand:
ES#:
5470774
Mfg#:
ECAGB58S58ATSD3
In Stock
Limited Qty Sale
$490.00
This product was last offered at the strikethrough price on 06-24-2026
Enable flex-fuel features on your tuned BMW with this plug and play kit! Compatible with MHD or ECUTEK tunes and works with the stock or TU High Pressure Fuel Pump
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms S58 Engines - Automatic Transmission (Any HPFP)
Brand:
ES#:
5470716
Mfg#:
ECAGB58S58ATSD
In Stock
ON SALE!
$490.00
This product was last offered at the strikethrough price on 06-22-2026
Enable flex-fuel features on your tuned BMW with this plug and play kit! Compatible with MHD or ECUTEK tunes and works with the stock or TU High Pressure Fuel Pump
ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
5457709
Mfg#:
ECAGB58S58AT
In Stock
ON SALE!
$490.00
This product was last offered at the strikethrough price on 05-14-2026
A simple 30 minute install that will give you a huge increase in power! up to +44 HP & +73 lbs Torque!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4440465
Mfg#:
77-46326
Ships in 2 Business Days
ON SALE!
$504.00
This product was last offered at the strikethrough price on 01-28-2026
Adds a high fuel pressure connection to the JB4 for S58 platforms, allowing direct control of fuel pressure and fuel trims
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Next-Gen Power Delivery with OEM-Level Integration - up to +95 HP / +70 TQ
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! For CS and CSL models only - not for standard M3 / M4 models
Brand:
ES#:
5434562
Mfg#:
NM.64508358
Ships in 2 Business Days
ON SALE!
$629.00
This product was last offered at the strikethrough price on 07-02-2026
Next-Gen Power Delivery with OEM-Level Integration - up to +130 HP / +100 TQ
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
5434560
Mfg#:
NM.64508058
Ships in 2 Business Days
ON SALE!
$629.00
This product was last offered at the strikethrough price on 07-02-2026
Add power and performance with special software upgrades from recognized tuning leaders like APR, Cobb, and Malone. Let our trained support staff show you how to pick the performance software upgrade that suits your driving preferences and budget.
Lifetime Replacement
