I have a 2010 GT 500 with a handful of mods and a custom tune from a locally renowned speed shop. Long story short, it has lost all throttle response. The TB servo has been replaced and the tune check for issues. I have a 70mm BBk TB. I have checked the voltage at the TPS with a reading of 1.3vdc. I did not install the TB so I don't know what the original voltage was. The shop is about 50 miles away, and right now I can only move at idle. Can I simply replace the TPS without having an effect on the tune, if that's the problem?? Any suggestions would be greatly appreciated...