Focus Mk2 1.8 tdci

[Samandroid1998]

Hello

Was wondering will taking the cover off my air box/air filter lid do any damage to my engine? I have a k&n filter and it sounds a hell of a lot better with it off as I can hear the turbo spooling etc.

 

Cheers

[Ford_lover38]

Come across this question before; 

Fords official stance is that it stays on to make sure no stones or anything else causes damaged to the system! (aka gets in).

Dont see how any of thats true though lol

[JONATHAN_11_80]

If the air filter housing is like mine the air filter could come off the intake pipe and suck unfiltered air.  The airbox lid locates the filter in place.

[Samandroid1998]

If the air filter housing is like mine the air filter could come off the intake pipe and suck unfiltered air.  The airbox lid locates the filter in place.

What about if I put a jubilee clip on it? My filters quite a tight fit on it anyway

[F0CUE]

You can jubilee clip it on but removing the lid could lead to headsoak when you are stopping and starting in town the airbox is designed for maximum flow. If it's the same a mines there is massive hole in the right hand side plenty for noise to escape.