I received my Milltek exhaust for my Bora 4motion today and tried fitting it tonight. I got it on, but there is an adapter pipe that links the stock cat-pipe to the Milltek centre pipe and I think it is slightly too small on one end. I had to tighten the clamp really hard to get it to grab, but it seems its not tight enough as there is a small leak. Any ideas of how to fix this???

Also, I expected the system to have a nice deep growl as described by many people, but it sounds almost the same as the stock exhaust (except for a very slight burble and a slight induction-type sound due to the leak). Would this be due to the leak? Should it sound deeper/louder without the leak?

There is a small but noticeable improvement in throttle response and acceleration, I just wish it sounded like I expected!

Any help/advice/ideas will be much appreciated!