Need some help

I have a a3 2.0tfsi I've done a k04 conversion all was fine until I decided to fit an s3 cooler (my self) after looking at some guides thinking it can't be that hard so two days ago I fitted the cooler it's definitely not a one person job anyway every thing was going good till the end when I tried starting the car it wouldn't start? So I double checked everything and saw I forgot to connect this plug



Plugged it back in and started the car now my ECP and engine lights are on also oil pressure light comes on and turns off? While driving i got it scanned by a mate and two codes came back

18726/P2294/008852 - Fuel Pressure Regulator Valve (N276): Open Circuit
Possible Symptoms

• Malfunction Indicator Light (MIL) ON

Possible Causes

• Wiring and/or connections faulty
• Fuel Pressure Regulator Valve (N276) defective

Possible Solutions

• Check wiring and connections
• Check / Replace N276

16622/P0238/000568 - Manifold Pressure/Boost Sensor (G31): Signal too High
Possible Symptoms

• Malfunction Indicator Lamp (MIL) active

Possible Causes

• Wiring/Connector(s) from/to Manifold Pressure/Boost Sensor (G31) faulty
• Manifold Pressure/Boost Sensor (G31) faulty

Possible Solutions

• Check Wiring/Connector(s) from/to Manifold Pressure/Boost Sensor (G31)
• Check Manifold Pressure/Boost Sensor (G31)

I've triple checked intercooler piping my mate said I might have a boost leak
The thing is my car was fine before the cooler install no lights on the dash I've booked into http://audivwspecialist.magicallydesigned.com/ anyone heard of them? But they can't look till Wednesday Is there anything else I can check?

Dan-Jnr said:

Check the plug on the turbo throttle pipe is connected

Click to expand...

This? If so that's connected also forgot to add some water dropped in the connection I posted earlier?