running rich, what can i do?
 

I have a 99 civic si with a vortech supercharger aftercooled with a 10 psi pulley, but I rarely see over 8 psi.
My problem is I am running extremely rich. I have a walbro 255 in tank fuel pump, a 255 t rex inline fuel pump that came with the kit. The vortech fmu, an apexi V AFC, and 310 injectors.
I am going to take off the 255 inline fuel pump, should this cause any problems running on only the walbro 255?
Also I would like to get rid of the vortech fmu and run the hack, but can this be done with 310 injectors?
What should I do?

Re:running rich, what can i do?
 

http://www.importparts.com/
Find the one for your car.Personally I woud ditch the FMU and go with the 450s and a AFC.If you still have the stock injectors put them back on.The 310s and the fmu will still make it run rich since there is nothing to controll them.

Re:running rich, what can i do?
 

I just checked my car, the vortech kit includes the check valve

Re:running rich, what can i do?
 

I still think your problem is the fmu and the 310cc injectors along with the afc.You should use one or the other.if the afc is not tuned the injectors along with the fmu are fludding the engine.

Re:running rich, what can i do?
 

even with the V AFC settings on 0?
Cant i just lean it out with the VAFC?

Re:running rich, what can i do?
 

see the problem is that your trying to controll your fuel with too manny things,You have an fmu,checkvalves,310ccinjectors and an AFC.

I think with the 310 youll need to lean the AFC to about 10-15 percent.That might not modify map voltage enough to fool the map of reading boost.

Look,just give it a try.Either use the fmu with the check valves or the afc with the 310s,but dont use both.

Re:running rich, what can i do?
 

he can use both imo since the fmu will dump in too much fuel, and he can use the afc to lean it out a bit....should work with the right settings

Re:running rich, what can i do?
 

i think ill try ditching the fmu, and just go with the VAFC. Any ideas on what a my fuel maps will look like for low and high throtel?

Re:running rich, what can i do?
 

I think the wise decision would be to ditch the FMU and run some bigger injectors, but you can work with what you got. Take the FMU out and set the AFC to around -15 or so and see where you are at. You should already have the settings in the negative zone since those injectors are a bit bigger than stock. That's why you are running rich right now. Let us know how it goes and what you did.
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Re:running rich, what can i do?
 

I could be wrong, but 310 seems waytoo small for 10 psi. I'd really recommend getting some larger injectors. With the injectors at STOCK pressure levels, you'd need to pull about 20-22% to get the correct fuel, at 10 PSI (with no practical experience yet ;) ), I think you may even have to add fuel. Of course, I'm not that familiar with Superchargers, and how much they flow, so I could be mistaken. Still, it seems too iffy. If you did try to use the 310cc injectors and afc minus the fmu and check valves, I'd definately start out with +-0 for your settings.

Re:running rich, what can i do?
 

so far, i havent seen over 8 psi....but supposedly i have a 10 lb pulley. so i dont know.
The vortech aftercooled kit runs on stock injectors which are 240. The aftercooled kit runs at 8 psi, so i think 310 will be pleanty if i ever see 10, is this correct?
So should i start at 0 or at -20?

Re:running rich, what can i do?
 

They are not.310s can be used with propper tunning.Hondata recomends you use 310cc injectore with there s200 model and it will allow you to run up to 12 pounds.I dont think they would recommend it if it didnt work.

Re:running rich, what can i do?
 

holy crap! 2 255l pumps, 1 intank 1 inline. FMU, 310cc and VAFC!!

do this..

- ditch the inline 255 pump. u only need 1.
- purchase 450cc DSM blue top injectors.
- install Inline 10w10ohm resistors on the yellow/black line of each injector (only w/ 450's installed!)
- remove the FMU
- add some base settings to the afc to correct for the new injectors
- drive or tow to a dyno, and tune.

Re:running rich, what can i do?
 

any idea what kind of settings i will have?
and will the be the same all across the board like the hack?

Re:running rich, what can i do?
 

what with the s200..........That is an 800 dollar piggyback.Its programed to read boost and works with a 3 bar MAP.I dont know if you want to go that route but if you sell all that stuff you have for engine manegement now and go with the hondata you will never have another problem boosting again!

Re:running rich, what can i do?
 

no, i meant running my vafc and 310 injectors...what kind of settings will i have?

Re:running rich, what can i do?
 

Sorry I cant help you there couse I dont know.And most people on this board are using 450s.You will have to try it and find out what works.

Re:running rich, what can i do?
 

the AFC Hack was meant to be used w/ 450cc injectors otherwise you will not scale the MAP sensor down enough and cause a CEL

Re:running rich, what can i do?
 

im assuming he's running check valves too or a missing link

Re:running rich, what can i do?
 

yes he is.hese got too manny things trying to do the same thing at once.

corect me if im wrong but check valves and an afc are a no no right?

Re:running rich, what can i do?
 

^Correct

Re:running rich, what can i do?
 

so what will happen if i keep the check valve?

Re:running rich, what can i do?
 

Well to my understanding by the check valves releasing some of the pressure that the map would read at boost it is keeping the map frome throwing a CEL.If you now introduce the hack into the equation it will get the wrong readings of whats really going on with the MAP sensor and mannifold pressure.So basically the check valves would also be fooling the AFC making it impossible to tune.

Re:running rich, what can i do?
 

Im not trying to run the hack, i just want to get rid of the fmu and only use the vafc and 310 injectors and the check valve.....is this gonna be possible?

Re:running rich, what can i do?
 

vafc=the hack.it cant be done.

Re:running rich, what can i do?
 

so i wont be able to tune at all with the check valves?

Re:running rich, what can i do?
 

I'm going to try to clear this up.

Yes, you can do this. The 310cc injectors might be too small to use without the missing link so you will have to keep it, which in turn fucks the map up a bit, but it will still work. The hack is just using large injectors with an AFC, which is what you are doing either way.

My suggestion:
Sell the FMU, inline pump, and missing link and buy some DSM 450cc injectors and pocket the rest of the money. Problem solved.
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Re:running rich, what can i do?
 

so i should be able to stick with the stuff i have, but instead of havin -35 for my fuel map, i might have -20?