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Our Engine and Transmission Tunes are here for the Porsche 718 Cayman, Boxster, and Spyder with the 4.0L engine! This includes the GTS 4.0 and GT4 models. We've added a ton of features to make the cars even more capable on the track, or just daily driving. Gains are as high as +94 WHP and +64 WFT-LBS on the GTS and +75 WHP and +51 WFT-LBS on the GT4! You have multiple octanes to choose from, and tons of added features to make your 718 way more exciting!
We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Porsche 718 Cayman/Boxster (982) GTS 4.0L engine with the Bosch MG1 ECU! Expect exceptional gains from this naturally aspirated engine with up to 452-488 HP with 340-361 FT-LBS of torque on tap, depending on octane!
Features
Delivers up to 452-488 HP with 340-361 FT-LBS of torque
Max gains of +58-94 WHP with +40-65 WFT-LBS of torque
We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Porsche 718 Cayman/Spyder (982) GT4 4.0L engine with the Bosch MG1 ECU! Expect exceptional gains from this naturally aspirated engine with up to 452-488 HP with 340-361 FT-LBS of torque on tap, depending on octane!
Features
Delivers up to 452-488 HP with 340-361 FT-LBS of torque
Max gains of +39-75 WHP with +30-51 WFT-LBS of torque
The PDK is an amazing transmission on its own, but our engineers have made it even better, especially when combined with our ECU upgrades. We’ve totally reoptimized the transmission allowing it to hold more torque, accelerate more quickly, and drive more smoothly, all while adding more features to greatly improve the driving experience! The software and calibration engineering teams at APR spent the better part of a year fully testing, tuning, and understanding the PDK before ever releasing PDK transmission tuning to the public. This included countless trips to various tracks under grueling conditions to ensure the changes we made were truly better, but also reliable.
Features
Maximized transmission torque capacity
Increased clutch pressure and current
Optimized wide open throttle shift points
Clutch kick enabled (Configurable behavior)
Creep mode disabled (Configurable behavior)
Optimized launch control strategies
Launch control enabled in more modes, even without Sport Chrono
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. We’ve enabled new temperature protection routines to prevent the engine and cooling systems from overheating prematurely, which will be noticeable on the track. We’ve optimized the injection strategy to deliver a fatter torque curve and reduce the chances of knock, and torque dips. This is also achieved alongside per cylinder ignition advance and fuel trimming. Serious track enthusiasts should consider running race fuel, and adding additional coolant for maximum performance.
Here are some more notes from the engineering release:
Thermal Management
The thermal management and cylinder head temp setpoints depending on mode and driving conditions have been modified to try and help get ahead of the cooling system demands especially when tracking these cars. From factory the setpoint is 105c in normal mode driving around, and 95C in pdk sport and will not drop to its target sport cooling of 85c until you have been demanding a power output at wot for a long enough time. At this point the system is starting behind the ball and going to gain temperature faster than if the system was already at 85c before increased power demand was there. These cars could use some upgrades for the cooling system especially in on track conditions. But this will at least give you a better start as the system will be less heat soaked at the beginning as it will start around 85c and be targeting that the entire time in sport mode aka the pdk sport button. At some point the systems will start to soak as they will not have the hardware to keep up especially in long track sessions, but for drag racing, spirited driving it will keep temps optimal, and on the track at least give a head start and help keep coolant temps down longer before they start to rise on track.
Oil Temp Protection
Oil Temp limit has been set to 300F. This protection will kick in and reduce tq output to bring temperatures back into a safe operating range. This will mainly come in handy for those tracking the car.
Coolant Temp Protection
Coolant temp protection has been enabled as well to help prevent the motor from overheating during extreme abuse. It will reduce the tq the engine is making and try to let the coolant system cool down and get back to a safe operating temp before allowing full power to come back. This will mainly come in handy for those tracking the car.
Track Days
For track days, we recommend adding at least 2 gallons of 100 octane to help battle high track temps if you are running pump gas fuels. I would recommend 104 or E85 for the most consistent track performance no matter the temp or climate the car would be running in.
Cooling system is definitely a weak spot here, and could use hardware upgrades to help keep the optimal target temp of 85c for track days.
Any mods to help prevent heat soak and improve airflow to the air intakes will help promote better consistency and power potential for the platform.
Recommend Fresh Oil before every track event, and changing the oil after every track event.
Intake Temp Notes
Being an NA engine, the car is very sensitive to air density and temp changes, so please set customer expectations accordingly. Please Read Power Output note below in the notes section for setting customer expectations on the dyno. These cars can and will have heat soak issues especially in hot ambient climates due to the fresh air being drawn in through the side pods which are not super-efficient and are much hotter than ambient air going into the engine. The new 4rs side window intake is the best solution currently to combating this issue, and some companies have made this already for the GT4 Clubsport race cars to help with power consistency on track especially on hot days.
Picture from Porsche Motorsport on temp effect on power on NA car and its effect on lap time.
-Power outputon dyno will be very sensitive to ambient temp and airflow through side intake ducts. Most dynos will have no fan power to push air across the intercoolers. At a minimum try to have a carpet fan blowing in the side pods to help with heat soak in the airbox, and keep runs more consistent. Being an NA engine, the car is very sensitive to air density and temp changes. Give time to cool down between runs if needed. Also, If the temperature is more or less than we tested expect dyno numbers to vary. If it's cooler the car is going to make more power than we advertise and if it is hotter the car is going to make less. If you do not have fans blowing in the side ducts, power output will be lower as well.
- All advertised power numbers were done in 4th Gear.
Gotta say those are some very optimistic numbers for a naturally aspirated car with no physical mods.
I'd consider it if my warranty doesn't get renewed but i'd sooner throw a set of OAP's on the car which can be reversed without leaving any evidence.
The most optimistic numbers are probably e85-fuel-only.
In the US e85 is a fuel that is 85% ethanol, which can make big power gains when tuned right - even on a naturally-aspirated car. But e85 can wreck havock on the fuel systems of cars that are not specifically designed to run it, like all Porsches....
Is there a way to make the exhaust button full open when pushed and when not selected it defaults to oem programming instead of full closed? Are you able to custom set the redline, for example if I only want 8000 on my gts?
07-17-2023, 05:52 PM
APR ECU / TCU Tunes for the 4.0L 718 Boxster / Cayman / Spyder (GTS / GT4)
