THE END-ALL TRACK CALIBRATION FOR YOUR S55.
We've been tracking and developing S55 cars for years and one thing has always been trouble: the torque curve. The S55 is a TORQUE MONSTER, which makes it a fun ride for the street, and fun for passengers, too. But on a circuit, we want linear, usable power that climbs to redline, and a throttle that can be modulated between 10-90% input. Tall order? Yes, if you're just running Off The Shelf (OTS) tunes, which is why we've teamed up with the motorsport tuning team, Bend Calibration.
Together, we've successfully dialed out the low-end torque spike and have a base calibration unlike any other on the market. This tune alone shaved nearly 2 seconds off at Buttonwillow in our SDC M4 Time Attack build.
In the graph above, you can see we've calmed down the torque hit, providing nearly 500 lb-ft from 2800rpm all the way to 6000. With the right chassis tuning and dampers, available through us, the F82 puts this power down with ease, and we're able to build power in a linear curve to redline at 537hp to the wheels. This is all done on stock twins, a Wagner IC and a full exhaust. That's it. In contrast, you'll see "Mode 2" -- this is full torque, letting the turbos behave as they want to, which makes the F8x M cars impossible to tame on track, but if you want it, it's there, at the press of a button with on-the-fly map switching.
We recommend running Flex Fuel, so you'll be clear to run anywhere from pump 91/93 octane to upwards of E60, depending on your fuel system. We'll work with you every step of the way to ensure your calibration is suited perfectly to your car, your modifications and your preferences.
FOR OFF-ROAD USE ONLY
Here's what you'll need:
- ECUtek Programming Kit - Bluetooth Programming Dongle + License + Phone flash $865
- SUB2 S55 Track Tune - Two maps, Flex Fuel capable - $1200
- Bend S55 Fuel Filter Kit - protect your engine and keep your injectors clean, the stock fuel filter is NOT meant to catch contaminants present in Ethanol. $625
- Add a flex fuel sensor if you don't yet have one and plan to run Ethanol! +$600
This setup is 100% App-based from your iOS or Android device. Of course we can use a PC as well, but this is all about convenience. Flashing, logging, problem solving, all done via phone. Sending logs instantly through the app as well as getting crucial information like ethanol content, etc..