FAST EZ-TCU Kit 2009+ 4L65E & 4L70

FAST is known for making performance parts that work, and their EZ-TCU Transmission Controller is a prime example of that. If you're working with a 2009 or newer 4L65E or 4L70E transmission, this kit gives you serious electronic control over how it shifts. It's designed to take the guesswork out of managing your transmission's performance, whether you're just looking for a smoother ride or aiming for more aggressive shifts at the track.

What's really neat about the EZ-TCU is that it's ready to go right out of the box with a fully configured setup, so you don't need any special tuning experience. Just install it, follow the simple Setup Wizard questions on the included handheld unit, and you're good to go. But if you do want to fine-tune things, it's also fully programmable based on load, speed, and RPM. You can even set up real-time switchable calibrations, meaning you can have one setting for daily driving and a more aggressive one for racing, all with the push of a button. It also supports full manual mode if you want to use paddle shifters or a bump switch.

This controller allows for maximum electronic control over your shift points, how firm the shifts are, and how quickly they happen. It includes power data logging and self-diagnostics, making it accessible for users of all skill levels. Keep in mind that this unit is not CARB approved and cannot be shipped to California.