Anyone fitted or any experience of these devices specifically on a Z4?
http://www.mstuning.co.uk/pages/Sprint Booster.html
Available from there and slightly cheaper on fleabay
Wild claims about improvements but seems to be just a little electronic box that just sits between the throttle and ECU and modifies the signal
http://www.mstuning.co.uk/pages/Sprint Booster.html
Available from there and slightly cheaper on fleabay
Wild claims about improvements but seems to be just a little electronic box that just sits between the throttle and ECU and modifies the signal