Hi all, I joined a while ago, but just returned to Ford ownership, well engine at least...

I’m building a BOA V6, and looking to make improvements where I can, not looking for massive power, more make the engine as efficient as is reasonably possible, I have the later cams, and am looking at the plenum chamber.

I’ve read various conflicting views, some say its OK, some its rubbish, I like the look of the Boost performance plenum, but have read threads advising against dealing with Boost....

Question is, is the stock plenum worth replacing? If so any advice as to what with.

cheers.
Pete.