Originally posted by Chris Hightower:
The valve actuator cannot be controlled by the IMRC because it would needs three states in the RPM schedule. Open, Closed, then Open. On the IMRC, you only get Closed, then Open. I know a relay can reverse these signals, but it would still need three states. A seperate RPM sensing control module would be needed for it's operation, so it would work on any year Contour.
The cool thing about the butterfly is, it can be moved by just a selenoid. It doesn't need to be a stepper motor which would require more parts. The control module would simply have a sensor wire that taps into the coil pack, and it changes its state when the RPM's reach a certain window.
This same controller would also work great with NOS 
MSD makes such a piece as does Accell IIRC, as well as many N2O suppliers. Mulit-stage RPM windows would be close to the name of these things. From this a toggle relay is all that would be needed to control an open close selenoid. A small TB from just about any car could be used as a valve within this crossover tube to control crossover flow. I have an extra manifold in the basement and have been researching this very thing... The easy thing is, once you build the system, the rpm window controls are adjustable so one 1/2 hour to an hour dyno session is all that should be needed to tune it. Of course the spun bearing has slown my personal research...
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Brad Noon
'99 SE MTX, really blown now!!!!
http://www.bnmotorsports.com
