Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Removes top speed limiter, raises rev limit to 8,250rpm, improves throttle response, and improves power output - max gains of 22hp and 16tq!
Version 1.
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! 5X Entries For Our 25th Anniversary Sweepstakes!
Non Competition Package models
Non Competition Package models
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-18-2026
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! 5X Entries For Our 25th Anniversary Sweepstakes!
Plug & play power — gain up to 40 horsepower on a stock car, 70+ horsepower on a modified car!
Not for sale or use in the state of California.
This product was last offered at the strikethrough price on
05-19-2026
Gains of up to 45hp and 60lb/ft!
Not for sale or use in the state of California.
Performance software tuned for M50 manifold, HFM, & high flow injectors
This product was last offered at the strikethrough price on
05-02-2026
Performance software tuned for M50 manifold, HFM, cams, headers & high flow injectors
This product was last offered at the strikethrough price on
05-02-2026
Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +15HP +9LB/FT gains!
This product was last offered at the strikethrough price on
05-02-2026
Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 8,100rpm, improves throttle response, and improves power output!
Wake up your BMW with dyno-proven gains by Jim Conforti - +24HP +19LB/FT
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with Turner Motorsport 2.5L stroker kit an
This product was last offered at the strikethrough price on
05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date up to 12/1994 with 24lb injectors, and Schrick camshafts. Satisfaction guaranteed! Includes 30 day money back guarantee
This product was last offered at the strikethrough price on
05-02-2026
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, 24lb injectors, and Schrick camshafts. Satisfaction guaranteed! Incl
This product was last offered at the strikethrough price on
05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date from 01/1995 and a lightweight flywheel. Satisfaction guaranteed! Includes 30 day money back guarantee and limited life
This product was last offered at the strikethrough price on
05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
For vehicles with production date from 01/1995 and a Euro HFM. Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warrant
This product was last offered at the strikethrough price on
05-02-2026