Are the unichip advertised by Steve,s auto clinic effective at a going price of R5900 fitment included. They reckon a fuel saving of 10% Not really worried about the extra power as the 2009 DiD has ample power. Would somebody please advise if it works or not. I would like to spend if worth it but do not know what Mitsubishi SA think of this fitment in relation to their warranty. Regards Hennie