hi guys, my son as a 1999 s3 apy engine .the turbo needs to be replaced but which turbo will fit .we have been told this is a narrowband without a egt sensor .he can blank the sensor off in other ko4 turbos that fit the bam, apx ,etc engines and will work perfect .is this correct and can anyone shed light on this dilema also where would the best place to buy a replacement turbo thanks kev