ECMSpy.com - has a free downloadable program so that you can do the TPS Reset yourself. The site contains important and detailed information on it's use and even has a downloadable manual that explains the reset step-by-step. Just be sure to read up everything you can about it, before you dive in. It is a wonderful tool but if you're careless you could even fry the ECM. Xoptiinside.com also has some great info as well as this forum. It's a heavily discussed topic on here if you use the search function; "exhaust upgrade", "ecmspy", "tps reset", etc.