can the Haltech control 8 injectors this way?

[Gavin]

Im looking to run 8 injectors if possible in my ES and Im wondering if the Haltech F10X would be able to control them for the application I have in mind.

This is what I have envisioned:

(First off this is a fueling scenario I am considering for a quad throttle-body set up)

Id like to run one set of injectors in a stock like position, directly up-stream from where the new intake manifold will meet the head, these injectors would provide closed and partial throttle fueling requirements.

Then Id like to run a second set of injectors much further up the intake runner, ahead of the throttle bodies, most likely positioned within each of the velocity stacks. I would want these injectors to take over fueling duties at the wide open throttle position.

My purpose for this second set of injectors would be to mimic the way F1 cars position their injectors further up the intake stream in order to; improve fuel atomization, and cool the intake charge. I would need the first set of injectors, in the stock like position, to keep the car from stalling at idle and partial throttle conditions.

Ultimately Im looking to improve throttle response in this endeavour.

Do any of the Haltech gurus know if the F10X can do this for me?

And before anyone flames me for how needlessly complex this would be, please be aware that this is something Im looking to challenge myself with for fun. This is intended to be a garage project for me over the next year. By the end of it Id like to have built something interesting and unique (and of-course I wouldnt mind turning a few heads with my induction noise).

 

[dominoy2k1]

there is only one person i know of that has/is running 8injectors. his name on the foum is turfburn. he however is running microtech.

 

[BlkZoomZoom]

Focus, Fastlane....

 

[BlkZoomZoom]

Both with MPI

 

[changedman]

this is not a "can the MPI support 8 injectors" thread. someone who knows his question, please answer it.

 

[BlkZoomZoom]

touchy, eh?

 

[dominoy2k1]

lol.

 

[changedman]

im just trying instead of bombarding him if someone could answer his question. i'm curious too.

 

[Aricjm15]

it can controll 8 injecters, I dont know if it can do it like that, but it could be possible, the F10x is a powerful unit, it has a bunch of different outputs, I'm sure you could use some of them for extra injecters

 

[RyanJayG]

the F10X has 4 injector drivers, capable of controlling 8 low impedance, or 16 high impedance injectors. if necessary an extra injector driver box can be added for more injector outputs.

so the answer is yes and no. if you dont mind multi-point or batch injector firing then yes, but if you want 8 true sequential injectors, then no.

but is should work for the way you want to run it. though I personally wouldn't want to try something that radical personally without timing control as well.

 

[Gavin]

Alright, thanks for the info.

RyanJayG: timing control would be a definite +, it would also be a very expensive + unfortunately.

Well if the F10X has the potential to be a viable unit for me, then I suppose my next step should be to talk to a Haltech rep, or try to get my hands on an F10X manual, and plan out how Id like to do this.

Does anyone know of a web-site where I can download an F10X manual?

 

[Super Matty P]

www.haltech.com sheesh

p.s. why run extra injectors on a car that is already notoriously rich. Hell even boosted cars only run 1 MAYBE 2 extra injectors. If you're worried about intake temps you should look into waterinjection over extra fuel injectors. Water dissipates 5X's as much heat as gasoline when it evaporates. It's also MUCH cheaper right now and requires no additonal tuning. Water injection systems run about $300-400....about what you'd pay for just the extra injectors.

 

[Gavin]

Matty:

My purpose for this second set of injectors would be to mimic the way F1 cars position their injectors further up the intake stream in order to; improve fuel atomization, and cool the intake charge. I would need the first set of injectors, in the stock like position, to keep the car from stalling at idle and partial throttle conditions.

Improving fuel atomization is the key factor for me in adding the 2nd set of injectors. I would want to program the system to begin cutting fuel to the primary injectors as I near WOT (when I would want the velocity stack injectors to pick up fueling duties). There are some potentially large gains to be realized in doing this. I can remember an old issue of super-street (I think it was super-street, could have been another mag) where an already highly modified B16A picked up an extra 10 WHP (throughout its rev range) just by repositioning the injectors 4.5 inches up the intake stream.

That particular B16A was a race only beast so obviously Im not expecting gains anywhere near as good as what this Honda saw. Im just interested in trying to apply some technology I find interesting to my Protg. And I already have injectors I can use, so the cost of an extra set of injectors isn't a big factor for me. In fact, the only part of this project that I forsee costing me any real coin is the fuel computer purchase/tuning.

P.S. Matty, although my recent home purchase has utterly destroyed my auto-improvement budget, Im still planning on going WOMP at some point down the road.

 

[MPNick]

Alright, thanks for the info.

RyanJayG: timing control would be a definite +, it would also be a very expensive + unfortunately.

Well if the F10X has the potential to be a viable unit for me, then I suppose my next step should be to talk to a Haltech rep, or try to get my hands on an F10X manual, and plan out how Id like to do this.

Does anyone know of a web-site where I can download an F10X manual?

You need to be able to stage them also. You do not want or need all 8 to fire at the same time. Both Fastlane and Focus have done the very same thing you are looking to do. They have stock injectors in the stock location and then they have four extra injector staged to come on at higher boost levels.

Your thinking is very good about the extra injectors over 4 very large injectors. I just do not think that the F10 will work very well for you with the set up you are looking to do. If you find the F10 will not work, PM me and I can send you info on the MPI system. We have been running the Proteges with both extra and stage injectors for over a few years know.

 

[Gavin]

MPNick

I'm not married to the idea of using the F10X or anything. It just struck me as a good quality, user-friendly piece. And since I have future aspirations of adding a supercharger to my list of go-fast goodies, and the kit I have in mind uses the F10X, that became the first option I chose to examine for my current fueling requirements.

If you feel the MPI system may be a better option for me, and you have some information you would be willing to share, Id be more than happy to read up on it (and consider it as an alternative).

Thanks for your input.

 

[vindication]

if you really want an answer you can count on, pm Juan(HiBoost) and he'll tell yah. although he might not get back t you right away