Hi All, very new to the X5 world so please be gentle ... I had a quick search but could not find anything on this so please feel free to redirect me if it has actually been discussed.

My question is has anyone tried installing an echarge (see http://cgi.ebay.com.au/Turbo-Superch...1%7C240%3A1318)

The claims seem too good to be true for the price. Would be interested to see what other X5 enthusiasts have to say. Thanks.