problem

I recently installed a turbosmart boost tap and then my boost gauge stopped working right after install. Is it because I removed the hose going to the solenoid? Anyone got any ideas on how I could get it to work again?

So I had the ECU unplugged the other day and after I plugged it back in the car decided it didn't want to start when cold, it will crank fine but won't start unless you depress the accelerator pedal a bit, then it coughs and splutters into life. Nothing was changed mechanically when the ECU was...