The Porsche Porsche 718 Boxster/Cayman S / GTS (982) come with an incredibly sophisticated ECU from the factory, working with these Siemens SDI21 units requires an intimate knowledge of engine dynamics and software engineering to be able to properly understand and modify the functionality.

EQT has decades of experience in both fields and our shop 718 Cayman GTS has allowed us to perform R&D to deliver the best results possible. 

Using Cobb's ProTuner software, we have been developing and refining our own set of staged tunes or "OTS tunes" for your Porsche to be used with the Cobb AccessPort.

Hours of in house dyno testing, drivability road testing, and track torture testing went into the development of our calibrations. So you can be sure your car will perform optimally while retaining excellent drivability characteristics and a healthy margin of safety built into every tune.

EQT 718 Thunder HIll

When ordering, please select from the options listed for fuel quality, modifications, and special features you would like to be included in your tune. Please note that these maps are meant for the more basic Stage 1 and Stage 2 cars. If your car is more heavily modified and does not fall into the options available, we also offer custom e-tuning for just about any modification and fuel type available. 

Power Estimates:

This is a question asked all too frequently, and while we’d love to give you a specific number, there are many variables involved that can affect dyno results. Even taking the car’s modifications out of the equation, there are other variables such as weather, elevation, fuel quality, dyno type, dyno fan setup, etc. that come into play. With that being said, these are ranges that most vehicles will see, given standard modifications and reasonable conditions:

  •  Stage 1:  429.5whp 395.7wtq (E30 Fuel)
  • Stage 2:  444.3whp 434.4wtq (E30 Fuel)
Stage 2 E30 compared to stock and Stage 1 E30.
Porsche 718 Stage 2

Please note that these results were acquired on our Dynocom chassis dyno in 2WD mode and close to optimal conditions. Dyno numbers can vary greatly depending on dyno type and conditions. 

  • 2018-2019 Porsche Cayman (982) GTS MT/PDK WM
  • 2018-2019 Porsche Boxster (982) GTS MT/PDK WM

Ethanol Blended Fuels

When selecting Ethanol Blended Fuels, an Ethanol Content Analyzer is required. For more information, see our FAQ by clicking the icon below


Track Day Testing 

Click below to see real world testing of our shop 718 Cayman, getting torture tested to ensure it can handle whatever you throw at it!

EQT Staged ECU Tune - Porsche 718 Boxster/Cayman S / GTS (982)

Shipping calculated at checkout.
$ 300.00
$ 300.00
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EQT Staged ECU Tune - Porsche 718 Boxster/Cayman S / GTS (982)

Stage 1 / 91-92oct / 718 Boxster S (982)
Stage 1 / 91-92oct / 718 Boxster S (982)
$ 300.00