I unsnap the clip on the hose which goes to the airbox and now I cannt clip it back together. How can I do that? Is there a special tool for that?
Also can you tell me how to get the air filter out?

 

slip joint pliers have always worked for me- http://toolsandmore.us/slipjointpliers1.aspx

 

If you can't get the OEM clip to work....a standard hose clamp might be made to work (Width is a bit off...but it will do the job). But a set of pliers should clipthe OEM one fine.....just slip the clip to as close to the correct location as you can, squeeze the two parts together, slide it over and let go...VOLA!!

 

thx guys. I have sorted that problem out

 

FWIW all of those darned clamps have been replaced on my MINI with suitable sized worm drive hose clamps.