I HAVE HAD THIS SUV FOR GOING ON ABOUT 3 YEARS AND REALLY HAVE USED IT FOR FOR JUST ABOUT EVERTYHING AND ANYTHING FROM HAULING BUILDING MATERIALS TOWING TRAILERS AND SO ON. MY QUESTION IS IT HAS NEVER REALLY HAD ANY REAL GET UP AND GO AND FROM MY UDERSTANDING THESE ENGINES ARE ONE OF THE BEST FROM BMW FACTORY . WHAT CAN I DO TO GET MORE HP OUT OF THIS ENGINE I UNDERSTAND I HAVE THE STAGE 3 MANIFOLD ALREADY FROM FACTORY IT JUST HAS NO GO GO ON TAKE BUT ONCE YOU GET GOING HAS 45 OR 50 IT HAS ALL THE POWER ONE WOULD WANT . I BOUGHT THE BMW SCANER 1.4.0 AND I HAVE TRIED TO DOWNLOAD INPA AND ISTA FOR THE PAST THREE YEARS AS I HAVE A 2005 E60 530I AND A 2002 325CI AND ALSO A 2008 528XI . I WOULD GRADLY PAY SOME ONE IF THEY WOULD BE WILLING TO GO ON TEAM VIEWER AND DOWNLOAD AND GET ISTA P WORKING FOR ME AS I STATED I HAVE TRIED FOR THREE YEARS TO GET THIS TO WORK WITH MY K+D CABLE AND I HAVE THE OTHER CABLE USED FOR BMW SCANNER AS WELL ANY HELP REALLY WOULD BE GREATLY APPRECIATED THANKS LEE