HI here is the info you need for your fault Thanks mike
Service Engine Soon/EML light illuminated. Fault code P1498, unmetered air after compressor, is stored. Cause The plastic inlet duct at the supercharger has separated at the plastic weld point and is leaking. Measure Replace the inlet duct assembly, P/N 17 51 1 524 439, with a new like part. Measures to improve the quality of the plastic weld have been implemented.