Desert Sasqwatch
Goblin Guru
Plenum volume, runner length and diameter, and interior angles all play into the design of an intake manifold. Shorter/wider runners push the peak torque higher in the RPM band, as does a larger plenum. And having a boosted engine can complicate the whole process. Flow testing and acoustical tuning (air pulses) can be calculated, but only actual flow bench and engine dyno testing can determine what actually works for any given engine.I was actually doing some research on this last night. I’m no physicist, but the OTTP manifold sure does look like it would flow better. Even it though still appears to have room for improvement. Does anyone know anything about the science behind intake manifold design? I was thinking of trying to fabricate my own