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Alky injection circuit

  • Thread starter imported_Ron Vogel
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imported_Ron Vogel

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http://apogeekits.com/pulse_width_modulator.htm
I know a few people out there were following the threads on this. Back and fourth with DVLDOC, we came up with this and it seems to be a good alternative over the circuit I came up with. Plus it's a kit, comes with all the stuff you need to make it work. So you will save time over looking for all the stuff for it. I went ahead and ordered it to test it on my application. B)
 

98 TGP TOY

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Let us know how it goes Ron, im very interested to see the results. And not to bad of a price there either :D
 

98 TGP TOY

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Hey Ron, im gettin antsy. Any reason this wont work, otherwise im going to order it :D
 

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Ron, what is the cost for all the parts to the whole alky kit....give or take a little $$.......

Im looking into running this if yours and a couple other peoples runs well.

Ive been following this for a little and am starting to understand it. The power gains from this mod sound great......especially if you are already IC.....

how long do you think it would take to install a whole alky system?
 
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imported_Ron Vogel

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I don't know anything yet. I'm getting antsy too. I got the circuit Monday, and It only took me about an hour to solder it together. So circuit cost was about $18, + I added a housing, and knobs...I guess a progressive controller like this could be done for about $40-50 give or take.
However, I haven't wired it up to the car, or even tested it for that matter. Before it can even go on the car, I have to finish the SC housing (I'm porting an extra core off the car, and the injection's going directly into it), and I need to finish my custom rails before that new SC goes on.
The pump is pretty common; it cost me $25 shipped off ebay. Generally it goes around $40 ish, and I think www.coolingmist.com has an inexpensive one that will work for around $40-50 new.

Now the problem here is to find an inexpensive solenoid/jet...should be able to come up with something for around $30ish, but I've opted to use a fuel injector instead.

Sorry I'm not more speedy with this stuff, but I'm learning out the pitfalls here and it takes some time to balance this, family, and job.

I have a pic of what the unit looks like on Club GP, go to the Alky thread in the General section.
 
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imported_Ron Vogel

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Originally posted by 98 TGP TOY@Feb 9 2005, 02:49 PM
Hey Ron, im gettin antsy.  Any reason this wont work, otherwise im going to order it :D
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Got me, it looks to fit the bill perfectly. I have some reservations toward splicing into the MAP, and may need to run a stand alone one...but that's about it. It's extremely easy to build from the kit. Just a little time consuming. The only thing that needs to be modified is 2 of the on board pots, need to be mounted on the box insted of on the PCB for easy tuning. One is 100K, the other 250K.
 

98 TGP TOY

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So are you looking for an on demand pump or a constant run pump with your setup?

I already bought an alcy/water solenoid off of coolingmist. I saw the pic, thats why I asked about the circuit :D

Is their any other source you can use besides the map? Maff, rpm, ??
 
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imported_Ron Vogel

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MAP makes most sense, you only want to be injecting while boosting. Technically, you could control the motor or solenoid if so desired, but I'm opting for solenoid.
 

98 TGP TOY

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So then, are you going with constant run motor....then using a feed back hose or something when the solenoid is closed?
 
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imported_Ron Vogel

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No feed back line, the pump is an on-demand pump. It only runs if below a preset pressure.
 

98 TGP TOY

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Great, thats what I needed to know.

How are you activiting the pump, because you said you were using this to run the solenoid/injector. Are you going to have a separate wire going from the circuit to a relay to activate the pump?

Sorry for all the questions :)
 
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imported_Ron Vogel

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Yup, power wire to a relay. Safest way to do it, and guarantees full voltage.
 

98 TGP TOY

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OK, more questions. You mentioned you may setup an alternate sensor for the map because you dont want to splice it and risk problems. So here is my thought....for me at least :p .

Their are three wires for the map, so my guess is power, ground, and signal are the three wires. Now I cant double check myself, but im guessing the bypass valve also has a power and ground wire, but does it have an equal amount of power to the bypass as the map. So would it be possible for me to get another map sensor and the sensor connector plug. Then use the power and ground from the bypass and run it to the connector plug. Then connect it to the extra map sensor (along with a vac/boost line). Then run a signal wire from the plug to the circuit, and be set. If not the bypass, then how about the EGR?

Or have you already come up with a brilliant solution :D
 
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imported_Ron Vogel

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If you ran a secondary MAP, just run it to IGN+. The boost bypass is a PWM signal, I have read 13.8v to it, but it may be inconsistant if TQ reduction is enabled. The EGR Has a 12vdc and a 5vdc, but I had problems with tapping from it before, and don't know enough about it to make a good recommendation. It may still be OK to tap the exsisting MAP signal, I just don't know yet. I'll give Justin over a Casper's a call to see what he thinks.
 

98 TGP TOY

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Ok gotcha. I was just trying to use up some of the extra wire and plugs i have under the hood :D , oh well.

I think I may order this sometime this week and try to set up some type of off car testing, when time frees up. I cant let you be the only one having fun :p
 
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imported_Ron Vogel

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Well, I may have some better info later...I'm off to Casper's today to look at some options with the wiring.
 
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imported_Ron Vogel

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Got one piece of the puzzle...Justin had no reservations that the circuit will work. He made me up a connector that goes between the MAP, and the harness, so it's plug and play.
I do know that it'd be a pipe dream to think I can hook this all up and it'll work like I want it with no fuss. So...once it's all ready to test, I need to simulate the voltage the MAP will put out, and measure the flow of my injector vs. time. If you are doing the solenoid/ jet thing, I assume you need to go to the largest size you will need and work backwards to tune. I may test a jet down the road, but I doubt it.
To do a test, you need to find the voltage your MAP puts out at your highest boost level, and send that to the voltage control on the board. Run your pump into the solenoid /jet, and face the jet into a graduated jug, and measure the time it takes to fill, so you know total flow per hour.
 

98 TGP TOY

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Sounds good. Hopefully I can find some spare time, but it looks like it will be a while.


Also, You have PM :)
 
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imported_Ron Vogel

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Yikes.

I am sitting on all the parts I need for this already. Actually go the box built, I wired the box up yesterday, and just have to finish the wiring harness now. My son's birthday is this week, so haven't been able to get anything done the last few weeks. We're having a big party for him next weekend, and I've been trying to get a bunch of stuff done to the house finished before we have all the people over. Crap, this weekend I put new stairs in the garage, panted our stairwell (over 20 ft high walls) and replaced all the light fixtures on the first floor and stairwell, and put up a ceiling fan. I'm tired, we were up untill 4am painting, and the kids got up early today.
 

98 TGP TOY

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Sounds like you have been busy.

If this didnt work for the solenoid/injector idea, could it still be used like the other progressive controller to run the pump?

Have a fun birthday week :D
 

98 TGP TOY

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If this didnt work for the solenoid/injector idea, could it still be used like the other progressive controller to run the pump?
Come on Ron...where did ya go :lolsign:
 

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