Adds a high fuel pressure connection to the JB4 for S58 platforms, allowing direct control of fuel pressure and fuel trims
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes! Competition Package models Competition Package models ONLY
Brand:
ES#:
4615791
Mfg#:
D440-0137
Ships in 5 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.
$749.99
This product was last offered at the strikethrough price on 06-03-2026
Visconti has created a true plug and play harness kit for Gen 2 B58 and S58 cars!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4810321
Mfg#:
200.1103
Ships in 4 Business Days
$795.00
This product was last offered at the strikethrough price on 01-05-2026
Next-Gen Power Delivery with OEM-Level Integration - up to +95 HP / +70 TQ
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! For CS and CSL models only - not for standard M3 / M4 models
Brand:
ES#:
5434562
Mfg#:
NM.64508358
Ships in 2 Business Days
5% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$599.00
This product was last offered at the strikethrough price on 06-03-2026
Next-Gen Power Delivery with OEM-Level Integration - up to +130 HP / +100 TQ
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
5434560
Mfg#:
NM.64508058
Ships in 2 Business Days
5% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$599.00
This product was last offered at the strikethrough price on 06-03-2026
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!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This software is only compatible with Windows PC / Laptop. CARB certified for sale in all 50 states.
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!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms This software is only compatible with Windows PC / Laptop.
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!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Increase power with this plug-and-play tuning module! Gains of up to +60 HP & +70 Nm (+52 ft lbs)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For CS models only
Increase power with this plug-and-play tuning module! Gains of up to +70 HP & +110Nm (+81 ft lbs)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For Competition package only
Increase power with this plug-and-play tuning module! Gains of up to +79 HP & +100 Nm (+74 ft lbs)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Increase power with this plug-and-play tuning module! Gains of up to +110 HP & +140 NM (+103 ft lbs)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +16LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles with production date up to 12/1994 with a Euro HFM and lightweight flywheel. Satisfaction guaranteed! Includes 30 day money back guarantee a
Brand:
ES#:
3137171
Mfg#:
5060-3004
Back Ordered
ON SALE!
SAVE 20%
$299.99
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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles with production date from 01/1995, a Euro HFM, and lightweight flywheel. Satisfaction guaranteed! Includes 30 day money back guarantee and l
Brand:
ES#:
3137073
Mfg#:
4131-3004
Back Ordered
ON SALE!
SAVE 20%
$299.99
This product was last offered at the strikethrough price on 05-02-2026
All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.
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