Type IV plenum intake manifold questions..., Why single and not double like the 911 motor? Options

[Mueller]

Has anyone made a dual plenum like used on the 911 engines for a Type IV?

[r_towle]

A bit confused on the pictures Mike.

My 911 (3.2 stock) uses one large throttle plate with the dual plenum shape, but it does not use individual throttle plates for each cylinder, and not sure what that might buy you honestly.

In my opinion, there are enough other parameters to deal with that adding in individual cylinder tuning just makes it harder....

I think there is a better way to make the motor deliver everything it can, and that would be good head design, proper valve train setup and lots of testing to make sure all cylinders are performing at the same level.

Tuning to match might creat some bad stress on the crank and make the motor run poorly due to mis matched power from each cylinder. I would rather sacrifice some power and tune down to the weakest cylinder instead of maxing out each cylinder, just seems like a bad recipe for longevity.

Rich