Customized Power Deck Spacer for 3SGE, Installed, what I can say?! Nothing but responsive!!! Options

[vincent_doggy]

Ingridients





Fitted on a scrap engine













This post has been edited by vincent_doggy: Sep 18, 2009 - 11:31 AM

[delusionz]

Would this not upset ACIS operation too?

when ACIS opens up for high rpm operation, they flick up (sitting horizontally) to block off that top part of the manifold, when this happens it doesnt matter how much extra volume u put in there, its not used.

In low rpm operation the butterflys are vertical... there is a small gap underneath them allowing for just the bottom half of the intake runner space to be used, the rest of the vacuum sucks from the empty chamber you've just enlarged. Now you've also opened up a path that was once a dead end to allow vacuum to suck over the top of the butterflies and through the top half of the intake runner space effectively removing ACIS operation. Now you've lost mass amounts of low end torque and will not have gained anything up top. you can prove this by zip tieing the actuation lever you'll notice the 3S-GE bogs down if ACIS is open too early in the rev range.

This post has been edited by delusionz: Sep 19, 2009 - 8:25 AM