Fits 2020–2024 · Stage 1 and Stage 2 · Mail-in
$2,499
Stage 1
450hp
340lb-ft
From 395 hp / 310 lb-ft stock
The car
In 2020 the GTS went back to six cylinders. The 718 Boxster GTS 4.0 and Cayman GTS 4.0 use a naturally aspirated 4.0-liter flat-six closely related to the engine Porsche developed for the 718 Spyder and Cayman GT4, set up for road use with a 7,800 rpm limit and a system that alternately shuts down one cylinder bank at light loads.
At launch the only gearbox was a six-speed manual; from the 2021 model year a seven-speed PDK became available, with a shorter seventh gear than the four-cylinder 718s use. Porsche quotes 0–60 mph in 4.3 seconds with the manual and 3.8 seconds with PDK, and 182 mph with the manual.
Standard chassis equipment includes PASM sport suspension with a 20-millimeter lower ride height, Porsche Torque Vectoring with a mechanical limited-slip differential and the Sport Chrono Package. Both the roadster and the coupe are covered here.
On a 2024 car, Stage 1 is calibrated for the car as it left the factory and takes it from 395 hp and 310 lb-ft to 450 hp and 340 lb-ft on pump-grade fuel. Stage 2 is calibrated for supporting bolt-on modifications and high-octane fuel, for 485 hp and 365 lb-ft. The gearbox has its own controller and torque limits, so the optional TCU tune raises them to match, with sharper shifts and stronger clutch clamping.
Figures & prices
Factory and tuned horsepower and torque from our catalog, with prices for each stage and add-on.
| Model year | Factory | Stage 1 | Stage 2 | Add-ons |
|---|---|---|---|---|
| 2021–2024 | 395 hp / 310 lb-ft | 450 hp / 340 lb-ft $2,499 | 485 hp / 365 lb-ft $2,499 | TCU tune $1,999 |
| 2020 | 395 hp / 310 lb-ft | 450 hp / 340 lb-ft $2,999 | 485 hp / 365 lb-ft $2,999 | TCU tune $1,999 |
Tuned figures are estimates, not guarantees. Actual results vary with the car’s condition and modifications, fuel quality and octane, temperature, altitude and the dyno used. See our Terms of Service.
How it works
Choose your year, stage and add-ons and check out securely.
Pack it with your printed order confirmation email and send it to our Phoenix shop.
Within two business days of it arriving.
Return shipping is on us. Reinstall and drive.
FAQ
More answers in our FAQ
Our online catalog lists Stage 1 and Stage 2 tunes for 2020–2024 Porsche 718 Boxster GTS 4.0 / Cayman GTS 4.0 models. Choose your year at the top of the page; figures and prices for each year are shown in the table above.
The GT4 and Spyder come from Porsche Motorsport: their version of the 4.0-liter flat-six revs to 8,000 rpm, and they add a front axle derived from the 911 GT3, a lower ride height and more downforce. The GTS 4.0 is the road-oriented car without the GT bodywork.
No. The turbocharged four-cylinder GTS sold before 2020 is covered on 718 Boxster GTS / Cayman GTS (2.5). This page is for the six-cylinder roadster and coupe, with the manual or the PDK.
Stage 1 is calibrated for the car as it left the factory and runs on pump-grade fuel. Stage 2 pairs the calibration with supporting bolt-on modifications such as downpipes and runs on high-octane fuel. On a 2024 car, Stage 1 takes it from 395 hp to 450 hp. Stage 2 takes it to 485 hp.
A TCU tune is available as an add-on ($1,999). It raises the transmission’s torque limits and sharpens the shifts so the gearbox can handle the extra power. Ship your TCU in the same box as your ECU.
More Porsche tunes
Contact
Customers across the US order online and mail us their ECU. Our shop is at 952 W Melinda Ln, Suite D in north Phoenix (Deer Valley, 85027), and local owners are welcome to bring their car in. Call, visit or send us an inquiry.