Quote Originally Posted by MINI William View Post
I’ve ran a JB4 on a few of my F56’s with little issue. A remap will give you a better overall gain but the JB4 done ok at improving things. Matt also ran one on his F55 S with the DCT box so he’ll be able to answer how he found it with the box.

I would add that dealers can still see if a tuning box has been fitted or not if they want to.
As William said, I ran a JB4 with the DCT and found it made a noticeable difference - especially at the top end. Gear changes were slightly more harsh, especially if you were foot to the floor but I ran with mine all the way to the French Alps and back with zero issue and it was still a very comfortable journey when just cruising along.

I actually still have it sitting in the garage (with the Bluetooth module that lets you control it via phone app) if you decided on it and we’re interested.