Just finished updating the exhaust on my Mk 1.5 to a set of Bob Boig's Quiet pipes! After the original glass packs died years ago, I went to Lobak mufflers, with a Car Chemistry insert and catalytic converters to quiet it down because I used it as a daily driver. Recently, I have been leaving it in the garage because it was just unpleasant to drive it. So I got some new J-pipes (EFI motor) to replace the cats and go to the 4 bolt connector and just finished the install last night. Love the sound! Motor is actually peppier because the cats are gone. Nice job, Bob