W176 tuning
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$750.00 USD

Optimum Tuning by ZAC Motorsport Optimum Tuning is ZAC Motorsport’s in-house performance calibration division. Every...

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Buy with confidence from a family run business that values customer service.

30 day returns, Unrivalled Warranty

Questions? sales@zacmotorsport.com

ECU Reflash required? YES

Availability : In Stock Pre order Out of stock
Description

Optimum Tuning by ZAC Motorsport

Optimum Tuning is ZAC Motorsport’s in-house performance calibration division. Every tune is developed to deliver the perfect balance of power, response, and reliability, customised for your specific vehicle setup.

Unlike generic flash files, Optimum calibrations are tailored to your intake, exhaust, altitude, fuel quality, and driving style — ensuring the engine operates efficiently in all conditions. The result is smoother throttle control, stronger mid-range torque, and sharper overall performance without compromising drivability or engine safety.

Our remote tuning process is simple: connect your laptop using the ZAC Motorsport Optimum Tuning Tool, and our specialists fine-tune your ECU live over a secure connection. Optional data logging and revision packages are available for those seeking absolute perfection.

Why choose Optimum Tuning:

  • Custom ECU calibration for your unique setup

  • Tuned for local fuel quality and climate conditions

  • Optimised boost, torque delivery, and throttle mapping

  • Remote service with full professional support

  • Optional data logging and refinement for maximum results

Optimum Tuning gives you more than just added power — it delivers performance that feels engineered specifically for your car.

 

MODEL

Stage 1

"BRONZE" 

SUPPORTING MODS

Stage 2

"SILVER" 

SUPPORTING MODS

Stage 3

"GOLD" 

SUPPORTING MODS

Stage 4

"PLATINUM" 

SUPPORTING MODS ULTIMATE HP SUPPORTING MODS
A45 (W176) +50 ZAC Cold Air Intake +100 + ZAC Downpipes +175 + ZAC SHF Turbo +225 + HPFP Upgrade Coming Soon Coming Soon
A45S (W177) +89 Coming Soon +150 + ZAC Downpipes Coming Soon Coming Soon Coming Soon Coming Soon Coming Soon Coming Soon
C63 (W204) +53 ZAC SHF Filter Kit +103 + ZAC Exhaust Headers Coming Soon Coming Soon Coming Soon Coming Soon Coming Soon Coming Soon
C43 (W205) +53 Coming Soon +113 +ZAC Downpipes +153 +ZAC SHF700 Turbos Coming Soon Coming Soon Coming Soon Coming Soon
C63 (W205 476hp) +94 ZAC Cold Air Intake +144 +ZAC Downpipes +314 +ZAC SHF900 Turbos +400 +HPFP Upgrade 500+ Contact Us
GLC43 (X253) +53 Coming Soon +113 +ZAC Downpipes +153 +ZAC SHF700 Turbos Coming Soon Coming Soon Coming Soon Coming Soon
GLC63 (X253 510hp) +94 ZAC Cold Air Intake +170 +ZAC Downpipes +310 +ZAC SHF900 Turbos +400 +HPFP Upgrade Contact Us Contact Us
E63 (W212 585hp) +75 ZAC SHF Filter Kit +125 +ZAC Downpipes +185 +ZAC SHF800 Turbos +255 Contact Us Contact Us Contact Us
E63 (W213 612hp) +118 ZAC Cold Air Intake +178 +ZAC Downpipes +310 +ZAC SHF900 Turbos +340 +HPFP Upgrade +400 Contact Us
GLE/S (V167 612 hp) +168 ZAC Cold Air Intake +250 +ZAC Downpipes +310 +ZAC SHF900 Turbos +340 +HPFP Upgrade 400+ Contact Us
G63 (W463a 585hp) +146 ZAC Cold Air Intake +176 +ZAC Downpipes +300 +ZAC SHF900 Turbos +365 +HPFP Upgrade 400+ Contact Us
AMG GT (C190 476hp) +114 ZAC Cold Air Intake +164 +ZAC Downpipes +324 +ZAC SHF900 Turbos +400 +HPFP Upgrade 500+ Contact Us

 

Specifications

How we tune:

You order the tune,
We send you your required hardware (intake, downpipe etc if ordered). We send you a link to download the required software to your laptop.
We send you our OBD2 dongle.
We send you a form, to fill in and return, outlining your vehicle details and modifications, VIN, Fuel, etc,
The base tune is written.
then a time is scheduled to upload the base tune to your car, using remote desktop software.
If you choose to log and refine the tune:
A log file is created, this requires either dyno time, or some full power runs in a safe legal environment.
The log file is sent to us for refinement
A time is scheduled to upload the refined tune to your vehicle.

Warranty

WARRANTY:

Warranty

We stand behind every product we make. Our warranty reflects the confidence we have in our design and engineering. If you have any issues, please don't hesitate to reach out — sales@zacmotorsport.com

Warranty Coverage

ZAC Motorsport products are warranted against defects in materials and workmanship for the original purchaser from the date of purchase. Coverage periods vary by product type:

2 Years ZAC Motorsport Products

Covers defects in materials and workmanship across our standard product range including intakes, downpipes, exhausts, intercoolers, and engine bay components.

60 Days Built Transmissions, Turbos & Engines

Limited warranty valid from date of receipt. These products have a shorter warranty period due to the nature of their intended use and performance application.

30 Days ECU Tuning / Reflash

Satisfaction guarantee from date of purchase. If you are not satisfied with your tune within 30 days, contact us and we will work to resolve it.

Not Covered Made-to-Order, Wheels & Brakes

Custom and made-to-order products, forged wheels, and brake components are not covered under warranty.

What's Not Covered

This warranty does not cover:

  • Shipping costs of any kind
  • Damage due to transportation or incorrect storage
  • Vehicle downtime, rental vehicle, or towing costs
  • Labor costs to diagnose or replace ZAC Motorsport products
  • Normal wear and tear, including loss of shine, scratching, or yellowing of carbon fibre products
  • Damage caused by accidents, abuse, poor maintenance, or neglect
  • Modifications made to any ZAC Motorsport product without prior consent
  • Replacement or service items such as filter elements and clutches
  • Damage caused by acts of God or external causes beyond normal use

Warranty Exclusions — Misuse

The following will void your ZAC Motorsport warranty:

  • Installation by an unqualified or unapproved installer
  • Any disassembly or attempted disassembly of a ZAC Motorsport product
  • Failure to install required supporting modifications
  • Restricted or blocked turbocharger air intake
  • Lack of adequate oil or fluid supply to the product
  • Failure to use coolant/antifreeze in intercooling or heat exchanger systems
  • Use of poor quality fuel or failure of the fuel system
  • Improper maintenance or fluid levels
  • Abusive use including riding the rev limiter or excessive burnouts
  • Any form of racing or off-road use
  • Use of non-ZAC Motorsport ECU and/or TCU/CPC calibrations
  • Ingestion of foreign debris

How We Resolve Warranty Claims

If your product is confirmed defective under warranty, we will repair it at no charge. If repair is not possible, we will replace it with a product of similar composition, or at our sole discretion, refund the full purchase price excluding freight costs — only once the product has been returned and inspected. There is no charge for inspection. Return freight is the responsibility of the customer.

How to Make a Warranty Claim

Email us at sales@zacmotorsport.com with the following:

  • Your order number
  • A description of the issue
  • Clear photos showing the defect

We typically respond within 1 business day, Monday – Friday, 8:00am – 5:00pm EST. We'll work with you to find the best resolution as quickly as possible.

Emissions Compliance

Some ZAC Motorsport products are designed for performance use and may not comply with emissions regulations in all regions. It is the customer's responsibility to verify local emissions laws and ensure compliance before installation. ZAC Motorsport cannot be held responsible for any non-compliance in emissions testing.

Limitation of Liability

Our liability shall under no circumstances exceed the actual amount paid by you for the product. We shall not be liable for any consequential, incidental, special, or punitive damages or losses, whether direct or indirect, including damage to non-ZAC Motorsport components such as the engine, electrical system, transmission, or differentials. We reserve the right to modify or discontinue products at any time without notice.

Disputes & Chargebacks

We are committed to resolving any issues fairly and promptly. If you have a concern with your order or product, we ask that you contact us directly at sales@zacmotorsport.com before initiating a dispute or chargeback with your payment provider. In most cases we can resolve issues quickly without the need for third-party intervention.

Customers who initiate chargebacks without first attempting resolution through our support team may have their warranty voided, their account suspended, and future orders declined.

What's Included?

Included in the box:Where required, a Complimentary OBD2 Dongle and cord to plug into your computer
You must supply a LAPTOP computer
YOU must have GOOD RELIABLE INTERNET connection available at the vehicle
NOTE: Some tune stages require HARDWARE. Please refer to the table in DESCRIPTION tab.
Note, some vehicle models may require specialist tuning tools, only available at specialists garages.

Installation Information

This Product is easily installed.
You just need a Laptop (prefer Windows, MAC we cannot do past stage 2)
And GOOD RELIABLE INTERNET
Our aim is to provide you a safe reliable tune. The numbers below are conservative and indicative only. Actual HP numbers may vary (up or down) depending on many factors, especially what brand of dyno is used (if used). engine condition and mileage, fuel quality, altitude, weather etc.
Our Promise
If you are not happy with our tuning, and we cannot meet your expectations, we simply remove the tune and load the factory standard map. And return you the cost of the tune. Easy as that!
PLEASE NOTE! This is not a diagnostic / error fixing service. If you have any error codes with your vehicle, please have them addressed at your local mechanic.