Hi BaldEagle,

Thanks for the info, I know the QQ has a tunnel (I think that the EF will also). Did not know that the MVVS needed a pipe, was under the impression that a pitts would be fine. Does the DA benefit from a cannister? (not concerned with noise)

Assuming both engines have a cannister, which one is the best choice for the aircraft in question?

Thanks!

C.