I have a 2006 MT, hearing that i should have 51psi fuel pressure from the nitrious write up....my prosport gauge reads 61-62? This a problem or should it be at 61?

 

not necessarily a problem,the higher pressure will make stock injectors spray like they are a little bit bigger, maybe not the best pattern. IF your running the stock ecu with no mods at 65psi the ecu cuts the fuel

 

I also have a fuel pressure gauge from prosport and it has read high from day one. I don't think they are the most accurate gauges. If yours is still under warranty you can send it back for them to check.