Hello, I love the sound of the akraprovic exhaust. I've been thinking of getting the slip-on but I'm a bit put off by the web info. The info on akra's site does not make sense. They state you get more power from the slip-on that from the full kit. Also, over here (spain) i have to pass a vehicle inspection every 2 years and this systems are not homologated. So a slip-on would be a lot easier to replace with the original to pass the inspection. Can anyone with the slip-on comment on their installation and result? Can the full system be moded some how to pass the vehicle inspections? db killers or something of the sorts? -Thanks