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Ignitions and Electrical› Computers, Chips, Modules and Programmers

Weistec

M133 ECU Tune

Name: M133 ECU Tune
Brand: Weistec
SKU: M133-ECU-TUNE

$999.00

SKU: M133-ECU-TUNE

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Professional / shop required

Overview

The Weistec M133 ECU Tune is a performance upgrade for Mercedes-Benz AMG M133 engines. It increases horsepower and torque, improves throttle response, and eliminates the top speed limiter. The tune also optimizes fuel and spark delivery for enhanced performance.

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Unlock the full potential of your Mercedes-Benz 2.0L turbocharged M133 engine with the Weistec M133 ECU Tune. The Weistec M133 ECU Tune features include up to +80 HP and +183 TQ gains, improved throttle response for a more connected driving feel, and the elimination of the factory top speed limiter. It also optimizes fuel and spark maps to maximize performance and efficiency from your engine. This ECU tune is compatible with A45, CLA45, and GLA45 models (chassis codes C117, W176, X156) equipped with the M133 engine.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Weistec
Part Number	M133-ECU-TUNE
Category	Ignitions and Electrical

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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