A'PEXi s-afc and v-afc - Hyundai Performance Forums

Way2fine · 03-22-2004, 10:37 PM

Hey...this is my first post. i have seen a few of you talk about the A'PEXi s-afc, so i looked it up. whenever it was talked about, the v-afc was right next to it. what exactly are they and what is the difference?

AtilatheHyundai · 03-22-2004, 11:16 PM

the safc is a air/fuel controller and the vafc is a vtec and air/fuel controller

Way2fine · 03-22-2004, 11:46 PM

so which would work on my car and what does it do?

**i8acobra** · 03-23-2004, 03:13 AM

The V-AFC is for Honda's only. You would need the S-AFC.

01IMPORTSHARK · 03-23-2004, 10:36 AM

Quote:

Originally posted by i8acobra
[body]
The V-AFC is for Honda's only. You would need the S-AFC.
[/body]

tru.. if ur gonna do piggy back.. get the S-AFC II.. better idea would be to get the Greddy Emanage.

Way2fine · 03-23-2004, 11:47 AM

what is it that they do? does it act like a vtec? what is piggy back? sorry...im new to this

MIKELANTRA2323 · 03-23-2004, 01:40 PM

vtec is basically variable valve timing in hondas... you cant simulate it with a s-afc
hyundai has CVVT in the new elantras and tiburons(4cyl) which is our version of variable valve timing but of course it does not help any performance wise like vtec does for hondas. piggyback is basically some sort of computer be it S-afc,laptop, palm pilot etc..that allows you to tap into your ecu and make changes and tweak "makes your ecu think differently" settings. :rambo:

01IMPORTSHARK · 03-23-2004, 01:47 PM

Quote:

Originally posted by MIKELANTRA2323
[body]
vtec is basically variable valve timing in hondas... you cant simulate it with a s-afc
hyundai has CVVT in the new elantras and tiburons(4cyl) which is our version of variable valve timing but of course it does not help any performance wise like vtec does for hondas. piggyback is basically some sort of computer be it S-afc,laptop, palm pilot etc..that allows you to tap into your ecu and make changes and tweak "makes your ecu think differently" settings. :rambo:
[/body]

well said man..

: which in turn makes it act differently... (i.e. giving u more fuel)

[Edited by 01IMPORTSHARK on Mar 23, 2004 9:47 AM]

Way2fine · 03-23-2004, 02:14 PM

alright. thanks man. it only does it at a certain rpm right? like the vtec? that probably kills ur gas mileage when ur using it right?

MIKELANTRA2323 · 03-23-2004, 03:58 PM

no, contrary (sp?) to popular belief..VTEC is not hidden boost that kicks in at a certain rpm...its always there...its an extra cam lobe if i remember correctly. so it doesnt necessarily kill your MPG....i wouldnt reccomend leaving it on for daily driving hence why its connected to a laptop or palm pilot or even the S-AFC has different setting for different driving types (set manually) :rambo: