PRINCETON_JAKE
New member
Why not eliminate all the controls? Gut the psg by wiring the timing solenoid to a potentiometer, and hard wire the fuel solenoid to your pedal eliminating the ecm, psg, and all monitored sensors
Why not eliminate all the controls? Gut the psg by wiring the timing solenoid to a potentiometer, and hard wire the fuel solenoid to your pedal eliminating the ecm, psg, and all monitored sensors
That's not how any of this works.
Explain then, because from my knowledge (not saying I’m right) the only two electrical parts are 2 solenoids, 1 controlling timing, and one controlling fuel into the head. They are controlled by the “psg” which is told what to do via the ecm which is told what to do via numberous sensors and inputs.
Tell me where I’m wrong, because if that’s correct there’s no reason the timing solenoid couldn’t be run off a potentiometer to manually controll timing in a controllable but fixed timing, and the fuel solenoid could be controlled by eliminating 99% of the BS with a simple home made controller
Not to mention static timing would ruin the entire reason for having a vp44 over a poverty pump.
But I'm assuming something like this will be competition only and why's it important at that point?
Yea the pump was spinning a little over 200rpm in that scope capture, I've started turning it about 500 rpm with a drill since then. I don't have any scope captures but I can say that the voltage levels didn't seem to change.
I'd love to have an IC that I can just feed the sensor output into and get a logic level signal out but I'm still trying to figure out exactly what kind of sensor it is. My best current guess is a magneto-resistive sensor and I can't find an IC to read that.
Do you have any ideas on they type of sensor or even something to read it? The sensor has 2 outputs, both are reading around 250mv pk-pk normally and 500mv pk-pk on the larger dips for injection timing. One has a 2.5V offset, the other has a 2.75V offset.
But I'm assuming something like this will be competition only and why's it important at that point?
Maxim has several that may work. MAX9924-27 is meant for VR, but it's worth a shot. BrickRPM has a module with a MAX9926 on it if you don't like to hand solder 0.5mm leadspacing.
The dream is for a VP to be able to run low timing so it can spool a decent sized charger then ramp up timing and drive the charger hard past 4k
That could all be done off a boost reference sensor
I love how some of you think a vp has an advantage over a p7100 lol. Even if you design and build this stand alone that isn’t going to do crap for hp, you still need a $2000+ modes pump and even with that you’re still extremely limited on fuel capabilities compared to a p7100 or common rail...
You’d be a lot better off going to dual VP’s if you want to give a vp a chance I’m hell. Run them all off stock electronics. Set them at standard timing with one off a cog/blower belt, build an adjustable drive gear that varies the timing on the 2nd pump to advance or retard that pump to change timing, and better yet it would widen the pulse by over lapping/extending the pulse of the 2 pumps.
Think on that for a minute...
Very interested in this.
Always been told the VP CAN NOT make power over 3200 rpm because fuel volume in rotor was too low.
I have a drag comp and a 4k redline(never even tried it)
I am rpm limited with 3:54 gears in 1/4 mile
You’d be a lot better off going to dual VP’s if you want to give a vp a chance I’m hell. Run them all off stock electronics. Set them at standard timing with one off a cog/blower belt, build an adjustable drive gear that varies the timing on the 2nd pump to advance or retard that pump to change timing, and better yet it would widen the pulse by over lapping/extending the pulse of the 2 pumps.
Think on that for a minute...
My understanding is that the electronics limit the fueling before lack of fuel is an issue, hopefully we'll find out one of these days.