Originally Posted by RedHorse1
...snip...And my "resonant frequency of the intake plenum"
was low enough.
No joke. The intake runners are tuned so that when the shock wave in the incoming caused by the closing of the intake valve(s) bounces off the back of the throttle plate, the reflected shockwave helps push
more air into that cylinder.
Of course that is most effective when the engine is operated at the correct RPMs.
So, if you increase the distance from the intake valve(s) to the throttle plate, the shockwave will take longer to reflect back, therefore lowering the RPM's that allow the most efficient operation.
Save fuel? Increase performance? Confuse the Computer? Make it harder to work on? Make money for the pushers?
Yes, I'd like to hear some 1st hand accounts too.