Ignitions and Electrical› Computers, Chips, Modules and Programmers

RENNtech

ECU Upgrade

$995.00

SKU: 54.164.ML350

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The RENNtech ECU Upgrade is a computer chip and programmer designed for the ML 350 W164. It modifies ignition timing, throttle mapping, air/fuel ratios, and the engine's rev limiter to increase performance. This upgrade increases the stock 268 HP and 258 LB-FT to 290 HP and 278 LB-FT.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRENNtech
Part Number54.164.ML350
CategoryIgnitions and Electrical

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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