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Ignitions and Electrical› Computers, Chips, Modules and Programmers

Weistec Engineering

M156 ECU Tune

Name: M156 ECU Tune
Brand: Weistec Engineering
SKU: 01-000-00169-7

$899.00

SKU: 01-000-00169-7

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$100 Minimum Order

Non-Returnable Item

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Overview

The Weistec Engineering M156 ECU Tune is a performance tuning module designed for the naturally aspirated M156/M159 vehicle lineup. It utilizes advanced calibration technology to significantly increase horsepower and torque. This tune is street legal and CARB exempt with ID D-691-3.

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The Weistec Engineering M156 ECU Tune is a sophisticated performance upgrade for naturally aspirated M156/M159 engines. Developed by a leader in tuning and calibration, this module leverages the same technology used in Weistec's Supercharger Systems to deliver a significant increase in horsepower and torque. This ECU tune is a reflash of your original ECU and is street legal across all US states, holding CARB EO# D-691-3. The tune is available in two stages: W.1 for stock vehicles and W.2 for vehicles equipped with race exhaust. Optional accessories can be added, including the Cypher Classic Handheld Programmer, High Flow Air Filters, one-step colder spark plugs, and a 7-speed TCU tune for pre-2019 models. Note that the Cypher handheld programmer is not compatible with 2020+ models. The Weistec M156 ECU Tune is specifically designed for the M156 engine family and is compatible with various Mercedes-Benz models including the SL63 AMG (R230), R63 AMG (W251), and ML63 AMG (W164) from model years 2007 through 2011. Customers purchasing this ECU upgrade receive credit towards a future Weistec M156 Supercharger System purchase.

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 Engineering
Part Number	01-000-00169-7
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.

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