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!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
3138899
Mfg#:
N3MS41
In Stock
ON SALE!
SAVE 10%
$349.00
This product was last offered at the strikethrough price on 05-02-2026
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
Performance software tuned for M50 manifold, HFM, cams, headers & high flow injectors
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
3138897
Mfg#:
N3M3CRH
In Stock
ON SALE!
SAVE 10%
$349.00
This product was last offered at the strikethrough price on 05-02-2026
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
Brand:
ES#:
4714892
Mfg#:
JB4-OBDII-CA-MC
Ships on Jul 2, 2026
$30.00 USD
Lifetime Replacement
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