Engine
Cooling
We are proud to announce our new high-performance Auxiliary Radiator upgrade for M157/M278/M133. Designed specifically for enthusiasts who demand superior cooli...
$379.99
Intake
The Weistec ASV/WM Injection System adds multiple beneficial components to the M157 BiTurbo 5.5L engine. First being the addition of a Weistec Anti Surge ...
$3,299.00
Software
Our intermediate level ECU upgrade for the Mercedes M157 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced ...
$2,850.00
Our proprietary ECU+ upgrade for the Mercedes M157 Biturbo 4-MATIC engine offers huge gains in performance across the entire RPM range without sacrificing aroun...
$3,495.00
Stage 1
The RENNtech R1 Performance Package is the perfect entry level performance upgrade for the E 63 AMG. With the combination of the RENNtech ECU Upgrade ...
$4,380.00
Stage 2
The RENNtech R2 Performance Package is the evolution stage of the R1 Pkg. The R2 not only brings additional power, but also gives the car a deeper spo...
$11,680.00
Stage 3
The RENNtech R3 Performance Package is the evolution stage of the R2 Pkg. Included in the R3 Package are all upgrades from the R2 Pkg, ECU Upgrade, Di...
$27,480.00
The RENNtech R3+ Performance Package is the final evolution stage of the RENNtech R-Performance line for the M157 series and is intended as a track up...
$38,980.00
Turbocharger
Weistec Engineering is pleased to release the M157 W.3 Turbo Upgrade. We have developed proprietary aerodynamics designed to optimize extreme pressure operation...
$4,999.00