Use this part for MQB (MK7/8V) AWD cars such as GOLF R or A3 Quattro or S3 Quattro, equipped with CTS Downpipe CTS-EXH-DP-0015
To remove the CEL that will occur, proper tuning software must be used. CTS Turbo recommends choosing a High Flow Cat for the sake of our environment!
Use of stage 2 software upgrade is strongly recommended.
NOTE: not a turbo-back conversion part. Only use as replacement for existing parts.
Stage 2 software is required to avoid check engine light.
