Ok guys need to go a different plenum set up to my current one, thinking of getting a greedy copy plenum but they don't have internal trumpets so the question is are they really needed on an rb25det? My mate said cylinder 6 leans out & doesn't get enough air to it if there arent trumpets is this correct?
Also what's your thoughts on the greedy copy plenums? Anyone had any dramas with them? & do they suit top or side feed injectors or both????
Cheers