I put a Malone stage 2.5 tune on my 335d last year and this JBD has been sitting on top of a stack of spare wheels since then. Used for about 8 months. Works perfectly. I did make one modification: I took the case apart and drilled a hole above the adjustment dial. I then cut a foam earplug in half and used it to plug the hole. It doesn't change how the box functions, just spares you having to disassemble the case whenever you want to make an adjustment.
This is all visible in the photos below. Let me know if you have any questions and thanks for looking!
