Afc?

[Weapon_R]

I've heard that most cars with boost have these VAFC's and such, but would it do anything for a N/A car?

[max_boost]

Yes it would! Have you ever felt VTEC kick in at a lower RPM? Its really cool!!

[Weapon_R]

I have no vtec though?

[Superesc]

heheheh eerrrr. with NA cars it helps a bit I think 'cause if you have a good I/H/E system, you are getting more Air into the engine but may not have the same balance / efficient of fuel into the system.. so it does help I believe..

and as of low RPM VTEC, doesn't that make your high RPM power not as powerful?



Damn grammar..sorry workign and listening and typing at the same time....

[B18C]

Unless you plan on hooking it up to a wideband o2 and/or dyno tuning, I wouldn't bother. Without a wideband you would just be guessing as to how much fuel you need to add/remove and your ass dyno is just not accurate enough to optimize your vtec actuation point.

If you plan on tuning, then yes it would be useful.

[Weapon_R]

I don't have Vtec...my engine is the b18b. Is there any use for it since I don't have any FI and no Vtec? Are they hard to tune?

[Superesc]

Might want to check with Legend Boy too, 'cause he have an ol'school Apexi AFC in his car.. he can tell you more as to the effect and setup.

-Calvin

[Weapon_R]

Originally posted by Superesc
Might want to check with Legend Boy too, 'cause he have an ol'school Apexi AFC in his car.. he can tell you more as to the effect and setup.

-Calvin

Thats exactly who i had in mind since he has one and the same engine as mine also. Does Legendboy's do the same as the newer ones with the hot graphical interface?

[Superesc]

yea they all pretty much does the same thing.

[legendboy]

I have an apexi afc, if u have i/h/.etc... u are getting more air and the ecu is giving more fuel but not much past the stock maps,( i think) an afc allows u to tune the fuel as u wish. more air + more fuel = more power

[TomTom]

i have the vafc from what i am told it makes a difference

[Superesc]

is that the VTEC version?

[Weapon_R]

Originally posted by legendboy
I have an apexi afc, if u have i/h/.etc... u are getting more air and the ecu is giving more fuel but not much past the stock maps,( i think) an afc allows u to tune the fuel as u wish. more air + more fuel = more power

Hey Corey did you install it yourself or did you have someone tune it for you? I have all those mods (I/H/E), but have you noticed a worthwhile gain (500 bucks is what i'm looking at for one of those). Are they worth it?

[Superesc]

hmmm good question ... to spend 500 bucks more on a N/A B18B.... or save it up for a turbo (which gets bigger gains...)

[legendboy]

Well, I installed it myself but I haven't tuned it yet really. As Archie said, the ass dyno is not really the way to go, I won't dyno unitl I get my new engine in and I am going to get a new SAFC since I have different plans than when I bought the one I have now. AFC II has +15 & -12% I need the new one so I can run about -40% (+ - w/diff rpm) with bigger injectors. If I crank the fuel I get better top end pull, that much I can feel. If u want mine I'll sell it and install it for u if u want.

[B18C]

The SAFC lets you adjust fuel by 40%!! That's awesome.

[TomTom]

mine is the vtec air/fuel
its set for vtech at 4500rpm

[legendboy]

Originally posted by TomTom
mine is the vtec air/fuel
its set for vtech at 4500rpm

Play around with it a bit! Thats what its for! (just be carful )

[2000impreza]

with a intake and exhaust, my car runs nasty rich in the higher rpm's. i use a crappy autometer guage to tune the afc(field hyper-r) it isn't as accurate as a wideband on a dyno but its good enough if you just have mild bolt ons.

[B18C]

Originally posted by 2000impreza
with a intake and exhaust, my car runs nasty rich in the higher rpm's. i use a crappy autometer guage to tune the afc(field hyper-r) it isn't as accurate as a wideband on a dyno but its good enough if you just have mild bolt ons.

Yup. It will be good enough to rough tune for WoT anyways which is really all you need with minor bolt-ons.