VW New Beetle 1.8T Tunes (APH/AWV/AWP)

The New Beetle 1.8T came in three engine codes, and the calibration is written per code. The APH (1999-2001) runs a K03 turbo with a narrowband oxygen sensor. The AWV (2002-2005) is the 150 hp wideband engine on the K03s. The AWP (2002-2005) is the 180 hp engine it shares with the MK4 GTI.

Every code takes Stage 1 and Stage 2. The AWP goes on to Stage 3 and Stage 4; the APH needs a wideband conversion first. Not sure which code is in the car? Read the engine code guide. For what each stage does and what the car needs before it, read the 1.8T 20v guide.