PAC purple wire mod

[Razor]

Soften the hit mod...

Well those that havent had a chance to play with it, hit on something today.. if you use a small value capacitor across the switch it will slow down the response of the ramp on the controller, what that means is if you want to slow down the ramp only after launching.. you now have a way to do so.

Connections are as follows, PAC purple wire when a ground is applied limits the controller to its turnon point setting irreguardless of boost level, now adding a 220uf, 470uf, 1000 uf capacitor will adjust the rise time so it then resumes normal operation. Voltage on the cap 16volt is fine. Electrolytic available through Radio Shack will do. The larger the cap, the slower the rise time to its normal operation. So the burst can be controlled even further.

This is for the tweakers that like to play... throwing some tips your way.. Watch the knock guage activity...

HTH

Throw some more bones as they become available... hehe

 

[S10xGN]

Julio,

Are you saying that grounding the violet wire still kills the pump, but losing the ground will feed the pump in at a gradual rate?

Did you ever solve the key-on / key-off "decayed activation" anomoly? Understood, it's not really a "problem", just a strange occurance that we were puzzling over...

Oh, and did those smaller bottle "cap" stickers work a little better?

 

[Razor]

Well grounding the purple wire reduces the rise on the voltage to the pump. I dont want to give too much.. one of those if I tell ya.. gotta kill ya things

But it reduces the multiplication of your MAP sensor voltage being increased on the input to the controller. So lets say you set it for 4 PSI turnon.. ground the purple wire and then hit the brakes.. as soon as you mash the pedal staged and it goes past 4 PSI.. the turnon LED lites.. but the drive to the pump stays at the 4 PSI level... when your at 10 PSI, the drive is as if the controller thought 4-5 PSI pretty much.. now release the ground on the purple wire the controller instantly goes to whatever the MAP signal is.

Now this is where we have some fun, lets say this rise to "X" PSI happens too fast and cuases the motor to lose a little crispness... adding the capacitor to the purple wire establishes an RC circuit and thus a time delay in having it resume to normal operation.. hence the "soften the hit" mod.. Just something else added to tweak .. shh dont tell anyone

The sticker's are the absolute greatest. I need to get with you this week and get some ordered.

The decay thing is happening becuase of the power conditioning that happens within the box. See since its regulated, and there is filtering(capacitance) energy is stored.. when you shut the power off.. it bleeds down cuasing the LED to flicker. I probably can make you a FET drive for your Piezo alert you want to use off of the pump connections.

First you have to post some results???

 

[S10xGN]

It's been too hectic for testing, but I have full confidence I'll be in the 11's! I was getting 12-teens with 18# and now I'm easily running 22# with more to come. I did make up the violet wire to the brake switch, but haven't yet loaded the converter to the point of actually using it. I'll keep the cap mod in mind for future reference, though.

Later!