Plug & play power — gain up to 50 horsepower on a stock car, 100+ horsepower on a modified car!
For vehicles with electronic waste gate; not for sale or use in the state of California.
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 +12LB/FT gains!
Brand:
ES#:
3138953
Mfg#:
N4MS42
In Stock
ON SALE!
SAVE 10%
$349.00
This product was last offered at the strikethrough price on 05-02-2026
Reposition your intake air temperature sensor to maintain more accurate readings to maximize power output
10X Entries For Our 25th Anniversary Sweepstakes! Alleviate heat soak on the street or track.
Brand:
ES#:
3659554
Mfg#:
025451TMS05
In Stock
ON SALE!
SAVE 25%
$181.99
This product was last offered at the strikethrough price on 06-13-2026
Max gains of up to +45 HP and +38 lb-ft TRQ (Crank); +39 HP and +34 lb-ft TRQ (Wheel).
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes! For model years 2012-2018 only
Brand:
ES#:
4490239
Mfg#:
D440-0127
Ships in 10 Business Days
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$760.99
This product was last offered at the strikethrough price on 07-19-2026
Plug & play power — gain up to 50 horsepower on a stock car, 100+ horsepower on a modified car!
For vehicles with pneumatic waste gate; not for sale or use in the state of California.
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.
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
