What's bad about the v-afc hack?

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Old Jul 31, 2002 | 03:23 PM
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asianspeed's Avatar
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Default What's bad about the v-afc hack?

I've been reading up on the v-afc hack and it seems like it's a pretty good idea. But are there any drawback from running this setup?
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Old Jul 31, 2002 | 03:24 PM
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Default Re: What's bad about the v-afc hack? (asianspeed)

you can't run higher than 10 -11 psi but then you could always upgrade to a 2 or 3 bar map sensor so after that i don't know.
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Old Jul 31, 2002 | 03:31 PM
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Default Re: What's bad about the v-afc hack? (SilverCivic2k)

Wow, if that's the only draw back I might do that....seeing that my engine probably couldn't handle that much boost anyway.
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Old Jul 31, 2002 | 03:49 PM
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Default Re: What's bad about the v-afc hack? (asianspeed)

just remember man, you always get what you pay for. if this thing ran your car just as well as hondata or aem ems, then why would people even buy it? its a piggy-backs system. it hacks and tricks your ecu into doing things it isnt supposed to do. just think of that concept and compare it to an ecu that does what its supposed to do for your specific turbo car.


[Modified by ceemarun, 4:49 PM 7/31/2002]
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Old Jul 31, 2002 | 04:34 PM
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Default Re: What's bad about the v-afc hack? (ceemarun)

Don't compare the vafc to the ems...of course the ems is going to do everything better. It's also 4 times the price of a VAFC. If you're going to compare the vafc to something, compare it to a reasonable alternative within the same price range, like the fmu setup.

You can spend 80 bucks on the FMU, 75 bucks on the missing link, and 100 bucks on the fuel pump (i'm not sure how much the inline pumps go for, i'm just basing that off the walbro intank price) and run that setup. Or, you can buy dsm 440 injectors for 50 bucks, resistors for $1 a piece, and a used VAFC for 250. For roughly the same price as the FMU setup, you can have a good fuel setup plus the ability to make adjustments along the fuel curve. Now of course if you wanted to spend the money for the AEM EMS, it's going to do all of that + more. I assume though if you wanted to spend 1300 bucks or so you wouldnt be considering the vafc in the first place.

I am going to do the vafc + dsm injectors but that is just my way of thinking on the matter. this is just my $0.02 good luck!
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Old Jul 31, 2002 | 04:53 PM
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Default Re: What's bad about the v-afc hack? (KC GSR)

Don't compare the vafc to the ems...of course the ems is going to do everything better.
why not? its a form of fuel management, just like the fmu. hondata can be had now for less than $500, so for about $250 more with tuning, you can have a 10x better fuel management. w/ their high number of base maps, you can tune WOT and be done with. thats what i have and i love it.
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Old Jul 31, 2002 | 05:37 PM
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Default Re: What's bad about the v-afc hack? (ceemarun)

And you're 3k in debt....
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Old Jul 31, 2002 | 06:24 PM
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Default Re: What's bad about the v-afc hack? (mplex2000)

And you're 3k in debt....
lol, i'm using the safc hack and lovin it!
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Old Jul 31, 2002 | 06:36 PM
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Default Re: What's bad about the v-afc hack? (ceemarun)

Yes, but you can actually TUNE the V-AFC yourself....you have to have at least a Hondata 4b to tune it yourself (unless one of your friends has one), and they run $800+, then add injectors and a MAP sensor.

up to 10-12 psi boost, V-AFC hack
Past that, Hondata 4b/Zdyne Gold/AEM EMS

I'll personally be using the V-AFC hack boosting 10psi, then when I build my next motor I will be getting a Hondata 4b.


[Modified by 00civicvtec, 3:41 AM 8/1/2002]
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Old Jul 31, 2002 | 08:37 PM
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Default Re: What's bad about the v-afc hack? (ceemarun)

i'm for the VAFC hack as well, i tried it, and i love it...my goal would be AEM EMS, if you're going for 12psi or less, and want to save the money...go VAFC, if not....start saving for hondata (which i hear people are all selling for EMS) or EMS
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Old Jul 31, 2002 | 09:07 PM
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Default Re: What's bad about the v-afc hack? (98civicEX)

when running only 7-9 pounds of boost is hondadata even worth it or is it almost over kill, how much more reliable and how much better would the numbers be running standalone vs. piggyback
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Old Jul 31, 2002 | 09:33 PM
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Default Re: What's bad about the v-afc hack? (ceemarun)

Don't compare the vafc to the ems...of course the ems is going to do everything better.

why not? its a form of fuel management, just like the fmu. hondata can be had now for less than $500, so for about $250 more with tuning, you can have a 10x better fuel management. w/ their high number of base maps, you can tune WOT and be done with. thats what i have and i love it.
Uh yea.. and a Civic CX and Ferrari 550 Maranello are both cars so why not compare them too?
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Old Jul 31, 2002 | 09:47 PM
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filetofit
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Default Re: What's bad about the v-afc hack? (VTC_CiViC)

Or you can build your own circuit to scale down the MAP sensor voltage (which is the same thing the VAFC hack does) for less than $20.
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Old Jul 31, 2002 | 10:45 PM
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Default Re: What's bad about the v-afc hack? (filetofit)

Or you can build your own circuit to scale down the MAP sensor voltage (which is the same thing the VAFC hack does) for less than $20.
But you don't get the tunability of the S/V-AFC (8 seperate adjustment points)....someone needs to clone the AFC with a PIC microcontroller or something, I'm sure it can be done for cheap and allow pretty much as many adjustment points as you want.

I'm sure we could put our minds together and make one for rather cheap (less than $100) with, say, 10 adjustment points or so. IM me if you are interested in helping (experienced in electronics)...might be a cool little project
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Old Aug 1, 2002 | 12:07 AM
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Default Re: What's bad about the v-afc hack? (VTC_CiViC)

Uh yea.. and a Civic CX and Ferrari 550 Maranello are both cars so why not compare them too?
man, why are you hating? all im saying is for not a lot more money than people think, he can have a way better form of tunable fuel management.
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