Hi,
I have a 2.5i Z4 and I recently intalled the ESS TS2 kit.
The car is an ongoing project and the kit was installed by myself in my home garage.
Another self-modification is the front and rear brake calipers and rotors from the Z4 3.0si.
The car also has an ESS exhaust muffler.
There are a couple of youtube videos i have uploaded so far.
You can watch both of them in high quality as well.
This video is with the car in idle:
This video is with the car on the road but during the brake-in period so revs are kept pretty low:
I will add one or two more videos pretty soon..!