Hi. I recently had some work done on my skyline and had the plenum upgraded, have disconnected the TCC - I'm not sure but since I have had the car back the speedo isn't working. Has any one got any info relating to tcc and speedo not working - is there a connection or is this separate issue. I took car for a run tune just so I could see how it drives and add couple more mods then plan to dyno again. Currently running 356hp @ 16psi