Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply *NOTE: This kit must be used with appropriate "Stage 2" performance software.
Brand:
ES#:
4017694
Mfg#:
CTS-HW-434
Ships in 8 Business Days
ON SALE!
SAVE 20%
$529.99
This product was last offered at the strikethrough price on 09-29-2026
Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply *NOTE: This kit must be used with appropriate "Stage 2" performance software.
Brand:
ES#:
4017699
Mfg#:
CTS-HW-435
Special Order: No Guaranteed ETA
ON SALE!
SAVE 20%
$529.99
This product was last offered at the strikethrough price on 09-29-2026
Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply *NOTE: This kit must be used with appropriate "Stage 2" performance software.
Brand:
ES#:
4017693
Mfg#:
CTS-HW-433
Special Order: No Guaranteed ETA
ON SALE!
SAVE 20%
$529.99
This product was last offered at the strikethrough price on 09-29-2026
Universal/Service part for APR's MS100199 full catch can system
Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
4487795
Mfg#:
MS100218
Ships on Nov 11, 2026
ON SALE!
SAVE 10%
$234.99
This product was last offered at the strikethrough price on 09-28-2026
$211.45 USD
Free Shipping
Lifetime Replacement
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Custom made with 100% methanol resistant stainless steel spring and EPDM seals ensuring zero corrosion even with high concentrations of methanol.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Decreases the diameter of the factory pulley from ~63.25mm to ~57.75mm, which in turn spins the supercharger ~9.5% faster.
Call In Or Chat For Best Price! Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply - APR Stage II software is required to run any upgraded Pulley configuration and is sold separately - Ple
Brand:
ES#:
3219163
Mfg#:
MS100135
Ships in 6 Business Days
ON SALE!
SAVE 10%
$222.99
This product was last offered at the strikethrough price on 09-28-2026
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Unitronic's Supercharger Pulley Upgrade effectively raises boost levels by increasing the speed in which the supercharger spins.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Perfect for use in upgraded turbo cars with larger injectors and appropriate software
2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Fits models with Bosch style MAF sensor - Up to the 2000 model year
Looking to crank it up a notch?
2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
4044021
Mfg#:
3820-41006
Ships on Nov 16, 2026
15% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$464.99
This product was last offered at the strikethrough price on 05-11-2026
Includes all of the clamps for the turbo system hoses
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
2766010
Mfg#:
5574K19KT
In Stock
ON SALE!
SAVE 25%
$86.99
This product was last offered at the strikethrough price on 06-13-2026
Great for when more fuel is needed in a custom fueling application
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Spin the supercharger faster without affecting the accessory drive system
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Appropriate stage 2 software is required for use
Brand:
ES#:
4056962
Mfg#:
025510ECS01KT
Ships in 3 Business Days
$398.98
This product was last offered at the strikethrough price on 08-31-2026
Full solution to give your factory intake system a performance look!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3476954
Mfg#:
024641ECS01KT
Back Ordered
ON SALE!
SAVE 10%
$427.99
This product was last offered at the strikethrough price on 06-13-2026
The ultimate breather can kit for the C4 AAN S4/S6, everything needed for a clean, OEM-type conversion
2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.
Lifetime Replacement
