APR ECU Upgrade for the 2.5T 982 718 Cayman / Boxster S

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APR 718 S Tune

APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 2.5T S engine!

APR’s ECU Upgrades are the best dollar-per-horsepower modification one can make to the 2.5T engine. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle. This is made possible through APR’s optimization of the factory engine management system to take full advantage of the engine’s capabilities, without needing any end user adjustment. The software loads to the factory ECU through the OBD-II port, resulting in a clean and headache-free install.

APR ECU Upgrade Stages

APR’s ECU Upgrades support various octanes both with or without any hardware modifications. Each stage is fully compatible with an upgraded intake, intercooler, exhaust, or other minor bolt on modifications. Unlike many platforms, no “Stage 2” or additional software tweaks are required to properly utilize a high flow race DP exhaust system as the factory system poses minimal restriction.

Porsche Mode Switching

Each upgrade offers a host of improvements beyond power alone. Using Porsche’s Normal, Sport, and Sport Plus modes offers varying levels of output while retaining all of the unique characteristics present in each mode. Sport and Sport plus modes give you full power and torque. Normal mode give you modest increase over stock, but focuses on economy and comfort. We’ve optimized boost, fueling, ignition, cams, and more to achieve greater power and torque in all scenarios.


In Sport Plus mode we’ve reduced turbo lag during reapplication of the throttle by building boost while off the throttle. We have linearized the pedal maps for a more predictable throttle response curve, which works exceptionally well on the track. We’ve enabled left foot braking, and brake boosting. The speed limiter has been removed. We’ve optimized the software to better handle larger wheels without excessive torque interventions. And finally we’ve inverted the start stop functionality so the vehicle starts with this feature disabled.


With many customers tracking their Porsche, safety is paramount in our calibration strategy. Through the use of extreme datalogging equipment and additional sensors, thermocouples, and transducers, our engineers were able to fully optimize the ECU for advanced safety routines. This includes implementing several routines not enabled from the factory. The entire thermal management system is optimized to reduce engine bay temperature, and reduce intake air temperature, while also implementing advanced protection routines to prevent oil temperature from achieving unsafe levels. The exhaust crackles disable when temperature thresholds are crossed, and are only enabled in sport mode. Next, we help protect the engine from LSPI by preventing the engine from being lugged out in tall gears. We also protect the turbo from damaging compressor surge, and add in turboshaft overspeed protection. We’ve enabled new temperature protection routines to prevent the engine, exhaust, and other components from overheating, and have implemented temperature management strategies that are fully mindful of the platform’s limited fueling capabilities. We’ve optimized the injection strategy to not only deliver a fatter torque curve and better spool, but to reduce the chances of knock, and torque dips. This is also achieved alongside per cylinder ignition advance and fuel trimming.

APR 718 Porsche Dyno Graph
StageNAR FuelROW FuelMax HPMax TQMax HP Gain Over StockMax TQ Gain Over Stock
Stock As Reported by Porsche91 AKI95 RON350 HP309 FT-LBS  
Stock As Measured by APR93 AKI98 RON376 HP330 FT-LBS  
APR Stage 1 (Sport/Sport+)91 AKI95 RON398 HP387 FT-LBS+59 HP+76 FT-LBS
APR Stage 1 (Sport/Sport+)93 AKI98 RON422 HP411 FT-LBS+77 HP+101 FT-LBS
APR Stage 1 (Sport/Sport+)100 AKI104 RON430 HP410 FT-LBS+81 HP+104 FT-LBS
APR Stage 1 (Sport/Sport+)104 AKI108 RON439 HP421 FT-LBS+85 HP+108 FT-LBS

When you are ready for the best performance upgrades give Alex’s Autohaus a call at (801) 566-6115 and we would love to help you get the most out of your vehicle.

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