My X throw P0463 yesterday and I have read alot about people having to replace their entire FSU. Has anyone just replaced the gauge unit? Trying to determine if I should do that or the entire FSU. The cost difference is roughly $80 more for the FSU and my X has 102k on the clock so it could be a gamble. Also does anyone recomend a certain manufacturer? National chains are way overpriced compared to the outernet. So will probably go through RockAuto.