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.
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date up to 12/1994 with 21.5lb injectors. Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date up to 12/1994 with a lightweight flywheel. Satisfaction guaranteed! Includes 30 day money back guarantee and limited li
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date up to 12/1994 and a Euro HFM. Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warran
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date from 01/1995, with Euro HFM, lightweight flywheel, and 21.5lb injectors. Satisfaction guaranteed! Includes 30 day money
Max gains of up to +69 HP and +81 lb-ft TRQ (Crank); +62 HP and +73 lb-ft TRQ (Wheel).
Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes Competition Package models Competition Package models ONLY
Brand:
ES#:
4615791
Mfg#:
D440-0137
Ships in 5 Business Days
ON SALE!
SAVE 10%
$699.99
This product was last offered at the strikethrough price on 09-28-2026
Increase of +25 Horsepower, and +25 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
Increase of +170 Horsepower, and +294 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters!
This software is only compatible with Windows PC / Laptop.
Increase of +121 Horsepower, and +269 Torque! Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications!
This software is only compatible with Windows PC / Laptop. CARB certified for sale in all 50 states.
Increase of +40 Horsepower, and +45 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts!
***Please see photos and description prior to ordering, all sales final.***
Wirelessly connect your JB4 to your phone!
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!
Brand:
ES#:
5529294
Mfg#:
JB4-SPWCK-FSD6
Ships in 1 Business Day
Limited Qty Sale
$158.99
This product was last offered at the strikethrough price on 10-30-2026
If you've upgraded your car or just want a bit more power from your stock vehicle, performance engine software helps maximize your car's potential by letting it know just where the limits are. Improve your driving experience with upgraded performance engine software from our selection of elite software tuners.
Lifetime Replacement
