Hi all...i'm probably not the onlyone thinking about this mod and now that its summer i wanna do some moddin'... For those who already have a V-AFC, i'd like you to tell what the vafc does, what you got out of it and if possible your settings.

peace. :ar15: :bigun2:

 

Unless you have I/H/E..its pretty much useless.

 

well of course its one of the final performance mods; lets suppose the person has i/h/e a new throttle body and maibe pullies too...i just wanna know if its worth it, and what it actually does.
i dont understand the 8point adjustements every 500rpms, the "+/- 50% at each of the user-defined setting points" and the low/high camshaft settings :banghead:

 

I was able to get 10whp out of the entire powerband with the mods that I have (see sig). Also if you want to see the dyno results click on my pics. You can also see where and how I mounted the AFC in the pics section.


BTW: each A/F setting will be different for each motor. You must get it properly dyno tuned.

 

the only way you are going to get any gains out of it is to have it dyno tuned

 

bug, you have a hot car, the blue thingy in your sunglss holder is the vafc?
after i get some few performance mods ill get the vafc...is it true the vafc can change the point at wich vtec engages?

 

i think he gets that it needs to be tune but i think what he's trying to say is he doesn't understand what the unit itself really does.

now if i'm right in my assumption about what you're asking then here is a short explanation: it will allow you to alter your air fuel settings at any given RPM point in order to optimize your engine's performance. on top of that you can alter where your vtec engages to bring your power band up or down. altering the air/fuel mixture obviously is critical at this point since your demanding more performance. now *if* i am correct about the +/- 50% adjustment thing at 500 rpms (and that's a big if, but i'm confident on my explanation this time ) what that means basically is every 500rpms, you can adjust the air/fuel specs within + or - 50% of the factory settings. now i guess the VAFC I will only monitor this within every 500RPMs, whereas the VAFC II can do it in 200RPM increments i think.....

someone please stop me if im wrong or fill in the blanks, but i am pretty sure that is the main gist of the VAFC. hope this helps, if not then i'll just shut up.

 

yes, this is true :smokin:


the question i have though is whether it is worth the cash to buy the VAFC2 or if the VAFC1 is good enough....anyone, anyone?

SSTS

 

worthless mod IMO, espewcailly if you dont have someone really experinced to tune it. And u need at minimal I/H/E

 

The biggest thing I noticed with my VAFC is that it smoothed out the power band. No more turbo effect when VTEC kicks in.

Here's where I mounted mine:

 

Nsx Next. how much to mount it there? How was it modified? Did they make a harness for that spot?

 

hey guys id like to get a V-AFC soon and id like to know what's the difference between the V-AFC 1 and the V-AFC 2.


also, with I/H/E/P on my 1999TL, i guess i can expect something good from it uh?!

NSXNEXT: how did u fit it in there?!


@cUr@-TL

 

I did it myself. Wish I could find the thread where I posted how I did it. I think it's gone.

It took a lot of fabrication. It's an aluminum plate that slides down when the holder is rolled down. The sides are a combination of mdf plywood and epoxy putty. Took me a few tries to get it right. Lot's of sanding to get it shaped the way it is.

I bought the Frog wiring harness. It's plug and play. It wasn't cheap. I think I paid $150 for the harness, but it literally plugs into the ECU. No fuss...no muss

 

SATINSilver, you da man...thats what i wanted to know. Now i'm definetly getting it...even if its just to pull that look on the sunglass holder! NSX, can i get a copy of your settings? or canya post them?

someone gave me this but i probably wont understand untill i get the vafc:
W.O.lvt: 0,-1,-2,-2,-1.
W.O.hvt:4000-3,4400-3,4800-0,5200+2,5800+3,6300+3,6800+3,7500+2
V/T cnt L-H 3800, H-L 3500
Throttle Lo 10% Hi 55%
FPR is set at 37 PSI

Will vafc2 be more helpfull than the vafc1? could i get more hp out of it? its on ebay for a short 25dollars more.

 

with the gas prizes these day, if I had a V-AFC I'd tune it lean to save on gas

 

I belive the only differance between afc1 and afc2 is that you can set two different WOT maps. One set for race fuel and the other for regular 92 (or what ever you run). Like NSXNEXT said the best part about the AFC is that is really smooths out the power. Yeah it did give me an extra 10whp but thats not really enough to feel a great difference. Once again etxxz if you use someone settings from another motor, may be too lean for yours and will end up with a sezied motor.


As for mounting in the sunglass holder I took it to a good stereo installer and they used bondo and then painted it to match the existing plastic. It is set deep enough so visibility isn't an issue. NSXNEXT put his on a bracket so you can slide it down (very nice!) but a little extra work.

 

yeah you may save on gas but you may have to buy a new motor.

 

why...is the vafc bad for the engine?
i surfed last night (online heh) and found an Apexi distributor about 45minutes away that does the selling and the tunning, but i was thinking buying from ebay and tunning with them...You duds have been a great help, those with more questions, nows the time.

 

just another quick question...the VAFC is an universal unit for Vtec engines right? theres no such as a vafc for TL and different one for the prelude???

 

::touches nose:: correct

this makes it nice to get one used.

 

The AFC is not bad for the motor unless it is not tuned properly. I was saying if you lean out your a/f ratio too much just to save on some gas (I think Tatewaki was just implying humor) you may kiss your motor good bye. The AFC is fine just as long as it its installed and tuned properly.


As for your other question there is no Apex'i V-AFC sepecific for the TL's motor, they are all the same. I belive there are 8 wires that hooked up the the ECU and the instalation of those wires are diffent for each motor (thats it).

good luck.

 

so your saying i not only have to buy the vafc but i gotta find the wires?!?!? i gotta take a dump, i'll be back shortly.

 

No, you can buy the Frog plug and play harness like I did. But expect to add about $200 to price of the VAFC.

If not, yes you will have to tap into several wires on the ECU harness. It's not for the timid.

 

www.apexi-usa.com and gain some knowledge! it is a serious performance mod. satin, bug, neil are all right regarding the unit. it should be dyno-tuned for max effect especially w/ N2O, or I/H/E. or you can just use it to lower the vtec engagement point! my 99 kicks in at 3800 rpm's WOT.YOU WON'T BE SAVING ANY FUEL!!!

 

guess so...Kman since you're of the area, where did yours have yours tuned?
you guys have been great, all i need now is the cheapest place to get one.

 

lowering the vtec is definately the way to go. sometimes it seems like you're waiting forever for it to kick in.

ebay is probably you're best bet. if you're timid about shopping on ebay then just do a generic price search on the internet and i'm sure you will find some decent prices. good luck!

 

nah man, im all over ebay, just to tell you how much i do business there, i bough my WW kit from there...i've had my troubles but 99% of the time is what i want or what my custome wants...

You guys been awesome... i hope it helped many people...peace :thefinger:

 

just bought the vafc, 270shipped and got an appointment with an Apexi dealership in Miami, 45mins away, to tune my toy...i'll have intake, headers and iridium plugs by then.

Thanks, you duds been awesome...chill

 

I bought a new one off of ebay.

 

yeah i just got mine today from that dud on ebay,,,ajdm.com...i bought friday morning and i got today, tuesday morning!!! great dud to buy from.

I just have to wait for EBX SS headers, injen CAI and NKG iriduim plugs to arrive so i can take it to Dynamic turbo and have them install AND dynotune the VAFC for 250!!

i will go from 225 to hopefully 260-270s in a week yai...anyone think this is an overestimate? underestimate? i wanna know what to expect...help me.

 

I got a V-AFC II for 299 shipped on Ebay. It should be here sometime this week.

I'm gonna do what Ken did and install it in the sunglasses holder since I never use it, anyway.

 

Seach around on ebay... if you look close enough u can get a vafc-2 for under $280 new in a box. PM if you want details.

 

this is a beautifly old thread...
the vafc arrived like a month ago, im trying to find a type-S throttle body from a junkyard so i can go and tune my car... i wanna tune with atleast i/h/p, cl-S TB and iridum plugs...no money for exhaust.

yeah, right now theres a vafc 2 you can get for 275shipped...if anyone wants one...GO FOR IT NOW!