Let me tell you my experience with Motorsport Developments. As an entrepreneur, I struggle to find truly professional teams to work with, but sometimes I have a great experience, and that's what happens with this outstanding guys. I have been client since my times with my escort cosworth, but now I had a fenomenal experience tuning my focus RS mk3 with Stewart. What a knowledge, what a service, always responding my emails in a few hours analyzing my datalogs.
Now I have a real balanced and power RS, and Stewart made me fall in love again with this fantastic machine. I bought many hardware from the store but the main reason for this review is the MSD multimaps (350-380-420). I have had other tunes and they where great, but these ones, well... even the 350 is better! How can that be possible? With knowledge and correct dataloging analysis. That's what it is.
So: if you thing it's expensive...don't, because for the service you get, its cheap, believe me.
5 stars for Mr. Stewart Sanderson and his team.