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Old 01-28-2009, 07:48 PM   #36 (permalink)
wwest40
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Quote:
Originally Posted by MechEngVT View Post
I meant to address this in my reply yesterday since IIRC it came up earlier in the thread...but I think christ answers correctly.

This WOULD cause a problem with either an incorrectly designed intake or if you had a single throttle plate per cylinder with no "manifold" per se. In the first situation a proper chamber volume or resonator would buffer the pressure pulses and allow a continuous inflow through the throttle (and therefore the MAF sensor) the way that normal intakes already do this to a lesser degree. In the second situation (one butterfly/cylinder with no resonator) you don't even need a MAF sensor and can map fuel/spark from TPS and RPM.
"..buffer the pressure pulses...."

At WOT how do you "buffer" the pressure pulses in a way that prevents a pressure wave from travelling back up the intake path...??

With a 4 cylinder engine you will have ACTIVE SUCKING of the "opposite" cylinder to neutralize the pressure wave....
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