After a bit of technical know how about filter set ups on jenvey bodies. Now I've actually got some room I fancy fitting a bigger/better filter as I got the smallest single filter possible originally as it was either that or the socks or nothing due to such tight space not allowing me to fit anything else.

Basically I've got the longer inlet manifold and 90mm trumpets and am happy with how they performed on the rollers as made good figures imo so want to stay with the set up I have but as with the bodies is there anything I need to bear in mind when choosing filters etc i.e is there a optimum size of the filter or optimum size between the bodies and filter etc?

Thats great thanks I had heard something like 19mm from trumpet to filter and tbh I don't think I've got quite that with my current set up so will get a deeper filter at least. I also noticed on piper cross site that they are rated for different bhp levels dependant on filter depth etc.

Do the enclosed set ups add anything as some seem to say it will aid performance etc but a lot of people still run open trumpets for best performance? I won't run open but just trying to get around what's best for performance

Be easier to change filter though as gotta drill out the back plate lol + mines the dished plate not the flat one so didn't know they did a deeper option as was only offered the one back plate but a shallow and deep filter at time and only the shallow one would fit