Version 1.
Version 1.
Wake up your BMW with dyno-proven gains by Jim Conforti - +24HP +29LB/FT
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty -- For 1985-1987 vehicles with a 24-pin chip
This product was last offered at the strikethrough price on
11-07-2026
Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
Wake up your BMW with dyno-proven gains by Jim Conforti - +43HP +21LB/FT
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For 1989 model vehicles with automatic transmission onl
This product was last offered at the strikethrough price on
11-07-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +24HP +29LB/FT
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For 1988 model year vehicles with automatic transmissio
This product was last offered at the strikethrough price on
11-07-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +24HP +29LB/FT
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For 1988 model year vehicles with manual transmission o
This product was last offered at the strikethrough price on
11-07-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +43HP +21LB/FT
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For 1989 model vehicles with manual transmission only
This product was last offered at the strikethrough price on
11-07-2026
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.
2025+