Hey everyone i just bought an apex i turbo with the bov. I need some help with the fuel mangement. It seems as if the apex kit has no fuel management so i'll have to do it myself piece by piece. Someone was saying that i should get a 12:1 vortech FMU and a missing link and i also heard that if i have the FMU i won't even need the missing link, is it just one or the other? I didn't want to use a VAFC using some sort of wierd hack...i'd like to do it the safest way possible. I will be tuning via a greddy emanage and a greddy profec B boost controller. Does anyone know if the profec B has a built in turbo timer or will i have to get a seperate one. Also i guess at 8 psi i will be at 96 psi of fuel with the FMU, will i be able to support that on a stock fuel pump or should i go with a 255lph in tank and some 310 injectors? I'm trying to keep cost down to a minimum cause it looks like i need over 1000 bucks in extra parts for the turbo if i get everything on my list.

 

IM inspyral, this sounds right up his alley.

 

thanks, what's his IM

 

 

12:1 FMU comes with the drag kit. It makes the greddy kit run REALLY rich. But, better to be safe than sorry. You'll want to get the fuel pump btw. I'd get a 195 for now unless you want to do same major boosting.
And the profec B has no turbo timer.

 

Thanks, I guess i'm going with the 12:1 FMU, a 255lph inline fuel pump, apex i turbo timer (are those hard to install??), profec B and a missing link...and to save some money i guess i'll just tune it with the fields vtec controller that i already have....Has anyone ever used one of those? It says it can do a +/- 30% fuel adjustment...should be good enough. I was gonna get a greddy Emanage but that only does 20%.

 

You can run the 12:1 FMU, but you are limiting your fuel curve. I suggesst you drop the FMU and pick up either a V-AFC, or an S-AFC, and some larger injectors. I have some RC. eng. 310cc injectors for sale right now if you are interested. E-mail @ Cazan82@aol.com if you are interested.

Anyway, when you have larger injectors you will no longer need the 12:1 FMU, becuase you now have the injectors, but you will need a AFC of some type to tame your 255 intank pump, and larger injectors. You will be able to due all your fuel tuning/taming w/ the V-afc or S-AFC.

So i suggest this:
High flow intnk fuel pump, either 195 or 255.
Larger injectors
missing link
S-AFC or V-afc

Thats all you need for your fuel tuning, and it's ALOT better then the FMU route.

hope this helps.

 

That was the other route that ppl told me to consider. The only problem was that when you stepped up to bigger injectors you would have to cut the duty cycle down to around 40% and my fields SFC VTEC controller only does 30%. How much do you want for those 310's and do they just clip in to the d16y8 motors? I was thinkin about getting the 450 dsm ones for 50 bucks. I also heard that if you are running the larger injectors/fuel pump with piggyback tuning you don't even need a missing link.

 

The fmu way is cheap though, and he's on a budget. With the vafc and injectors you're up to 500, for another 100 or 200 you can go hondata2b with the 440's. You can get the 2b's used all over.

 

is the 2B still a piggyback or is that up to a standalone? I'm thinking that the bigger injector method might be cheaper actually. 50 bucks for some DSM injectors, 100 for a 255lph in tank fuel pump and tune with a greddy emanage for 300 ish. The only problem is that for the big injector method it looks like i'll have to be able to cut duty cycle by 40% and my fields vtec controller that i already have will tune only by 30% and worse yet the greddy emanage will only do 20%