4g61t.org

I've just did my conversion swap from 4g61 - 4g63 vr4, with 4g61 loom. I've had this exact conversion in a previous car and it seemed alot smoother in revving as to now it'll boost slow till 4-5k and take off. Maybe its just my memory lol but is there any way I can find out if the butterfly is activated?

You could manually wire the butterflies open and take it for a run and see if there's a difference.

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Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

It sounds like your short runners are constantly open. The long runners are to create torque and the butterfly valve opens the short runners for high end horsepower. The only thing I am not sure about on this manifold design is if both ports are open at high RPMs. If not, it sounds like your butterfly valve is not working correctly and that its stuck open in the short runner position only.

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1989 Mirage Turbo - 310whp - Sold
1998 Eagle Talon TSi AWD - Sold
2005 Legacy 2.5GT - Sold
1989 Dodge Colt GT

Long and skinny = low end,
Short and fatter = high end.
This manifold should only have one set of runners open when it switches over IIRC.

flying eagle - you wouldnt have that link of download file of the setup with pics?

It should have both open once you cross the threshold. One set is shut at the lower RPM range to create velocity in the airflow but opens at 4250 to accomodate for the increased demand of volume at the higher RPM ranges. You can use DSMLink and a factory Fuel Pressure Solenoid (I have personally done this) or take apart the diaphragm that opens the butterflies, flip the spring over, and re-assemble. Then run a vacuum hose to a port that would see boost and use a boost controller to control when it opens (I have also done this personally). The drawback to using boost is that it is imprecise. There is a lot of information regarding the Cyclone dual-plane manifold on Tooners and other palces.

I will post this up again:

http://www.mediafire.com/?va877rig6ueg23h

Oh, the Visor 4G Lancer site is stored here too:

http://www.mediafire.com/?84a8z5g8d1dwb1m

Legend!