Just fitted it to my car after it sitting in my bedroom and not knowing weather im selling the car or not and it seems to be knocking on the air filter and the engine cover is like rubbing against it.

I no the air filter is normally a problem but didnt no the engine cover too??

The Forge one sits closer to the engine cover, and the engine cover moves about a fair bit. On mine there are a few small bits of padding to stop the rubbing (put on by Ross) for this reason as otherwise it gets annoying as hell

thanks alot, i just put some sponge underneath the strut and the air filter. and be being stupid earlier i tightened it up the wrong way and now its tighter on the engine cover enough so that it doesnt make any noise.

seems to made the handling better from what i can tell

That works fine - as long as it does not keep rubbing up/down it will be just fine