Does the MAF hook up between the turbo and the intake or outside the turbo (connected to the air filter). This may be why my car will start for 2 secs then shut off.
Thanks

 

To the turbo intake(air filter), not the charge piping.

 

Yup. Between filter & turbo.

Don't know that this would prevent your car from idling however. At very low loads and with a cold engine, the air temperature and density should be very similar pre and post-turbo.

Been wrong before, though.

 

Also make sure it's pointing the right way. The arrow points in the direction of airflow.