Performance software (tuning) for the MK4 / New Beetle 1.8T 20v engine
 

AWD engine code: 150hp, K03, narrowband, 2000-2001 model year. (North America only)
AWW engine code: 150hp, K03s, wideband, 2001 model year. (North America only)
AWP engine code: 180hp, K03s, wideband, 2001-2005 model year. (North America only)

 

APH engine code: 150hp, K03, narrowband, New Beetle. (North America only)
AUM engine code: 150hp, K03s, wideband, 2000-2005 model year. (Rest of the world)

MK4 1.8T 20v Software