hey guys,
Three years ago when I had my last polo (before it caught fire :mad:) I had a dump pipe installed by Seb @ European Automotive with an APR tune & Seat intake.
I cannot remember the exact size but I can say it made a massive difference it how it pulled all the way to red line - it just roared.
It sounded SO much better do - turbo spool was so much more noticable.
Koz