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Porsche 991 GT3 EVOMSit ECU Tune

Porsche 991 GT3 EVOMSit ECU Tune

Porsche 991 GT3 EVOMSit ECU Tune

Performance ECU software upgrade
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Product Information

Product Details:

Performance ECU software upgrade improves horsepower, torque, and driving characteristics by reprogramming various sensor inputs, air/fuel ratios, and boost pressure (if applicable).                                 

NOTE: This is not a physical/shipped product.  This upgrade requires you to send us your ECU for re-programming. You will be emailed a download link with detailed instructions after adding this to your cart and checking out.

SHIPPING DETAILS: Shipping costs for sending an ECU to Fabspeed are the responsibility of the purchaser. The ECU will be tuned within 24-48 hours of receiving it and Fabspeed will then ship back the ECU using whatever method it was shipped in with.  (For example: If you send in your ECU via Ground shipping, we will ship it back via Ground. If you ship it via Overnight, we will ship it back via Overnight.)


  • Fits all Porsche 991 GT3 vehicles, 2015+
  • 991 GT3 3.8L / 92 octane fuel (Power numbers will be greater with 93 or 100 octane)
    • Stock = 475 HP / 325 TQ
    • EVOMSit Software Only = 492HP / 336TQ
    • Software + Valved Exhaust = 500 HP / 344 TQ
    • Software + Valved Exhaust + High Flow Catted Headers = 508 HP /352 TQ
  • Left foot braking is optional
  • No issues with cat monitors and passing emissions with 200 cell or higher cats
  • Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time
Dizell selects the best manufacturers and suppliers to offer the best possible quality and fitment in the market.
In fact, when it comes to body kit, we even have access to our own bespoke workshop.
All our products are already test fitted on the actual existing car before finalising the molds and therefore we have the best result in fitting.
Many manufacturers never test fit the mold and make their products without the certainty of its fitment.
Aftermarket products, such as body kits, are known for their troublesome fitment issues, many need cutting, filing down and modifying before fitting while some don't fit at all. The products we supply are by far the least troublesome items if any at all and they have a great fitment result as we have witnessed from our customers' cars for many years. 


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