Have any of the modified 5g's ever modified the siginal for the VARIABLE INTAKE AIR SYSTEM to switch over earlier in the RPM range?

I've noticed that in most dynos the HP dips for a second at 5k when the factory switch happens. Then the HP keeps going up. Perhaps modified NA and SC'd 5g's could benefit from an earlier opening to the "short" runners.

It would be easy to do. You would need to cut the wires to the VIAS CONTROL SOLENOID VALVE. Measure the resistance of the VIAS CSV with a DVM. Then get a resistor with a similar value and put in in between the wires going back to the wire harness. This should make the ECU think that the VIAS CSV is still under its control.

Then get a RPM switch and wire it up to the VIAS CSV. One wire on the VIAS CV gets 12v when the ignition is on and the other would go to the switched ground on the RPM switch. This would allow you to select the RPM that the VIAS CSV switches over at.

I think SC'd 5g's could benifit from this allot, and NA 5g's with I,Y,E could see a little benifit.

What do yall think?

 

Woah... lots of cutting, measuring, and solving involved. Too complicated for me.

But it does sound like a good idea.

 

Oh and I for got this mod must be done under a shade tree in an vacent lot whith a bunch of friends hanging agound drinking beer, other wise it might not work.

 

I have no idea what wires and stuff you are talking about.

 

And I'm still getting tips on changing my oil for the first time!! MardiGrasMax I hope your older than 27 otherwise I'm gonna feel real ignorant about my car, and for my age.

 

29, but Ive been a DIY modder for ~10years.

 

Send me an e-mail and I'll supply you with the info you need on the wires.

 

 

I dunno! I think we ought to put Desert Pearl on this project. He'll try anything !!!

 

That's true, DESERT WHERE ARE YOU? WE HAVE A PROJECT FOR YOU!

good idea Mardigras, its kinda like VTEC, and making your own VTEC controller. Cool idea

 

Ok, I measured the resistance on my 2k manifolds VIAS CSV, it was 37.8ohms so that is the resistance value your looking for give or take a few ohms for the dummy resistor.

The wires are located to the drivers side of the upper intake manifold where the VIAS vacume actuator sits, it will have a few vacume lines above the harness. 2000 FEDs will have 1 connector 2000 CA and all 2001's will have 2 connectors. If you have 2 connectors its the one closest to the intake runners. The wires are red/yellow & yellow/green.

Red/Yellow get 12v when the ignition is on.

Yellow/Green would connect to the switched ground of a RPM switch.

I'm pretty sure thats it.