Actually, it is a very straight path from the plenum to the intake valve, which is what counts. There is no variable intake runner length.baco99 wrote: i (sic) wonder if that could be optimized in some other way. it (sic) seems like the intake tract is changing direction a lot before any air gets to the cylinder head.
maxnix wrote:Actually, it is a very straight path from the plenum to the intake valve, which is what counts. There is no variable intake runner length.
Q45tech has discussed the design extensively in previous posts and how it is optimized for the torque peak of the engine. It all starts at the intake with its resonator and particle traps.
Or read the posts. Much more informative as there is hard design data contained therein.baco99 wrote:interesting! i still need to see a cutaway...