Increase of +211 Horsepower, and +321 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance exhausts & high-flow air filters!
Must be replaced when removing the intake manifold. For M278 and M157 engine applications.
2X Entries Into Our F80 M3 Sweepstakes 2X Entries For Our Spin To Win Sweepstakes!
Eliminate fueling bottlenecks on your M157 with an upgraded FX-200 high-pressure fuel pump system designed to effortlessly handle big power and full E85.
Brand:
ES#:
5446632
Mfg#:
SP-FX0320-M157
Special Order: No Guaranteed ETA
8% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$5999.00
This product was last offered at the strikethrough price on 11-11-2026
Upgrade your M157 AMG or M278 with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.
Lifetime Replacement
