Anyone know a good site where it show me how to use the vafc hack.I am running on 370cc injectors..plmk thanks

 

http://www.thedropshop.tv/vafc.htm

 

You'll need 450s, it absolutely will not work with 370cc.

 

i use 370's

 

With how much boost?

 

.45 bar

 

Well that explains it..I couldn't even run 7 PSI on mine without 450s.

 

.45 is around 7psi..
. huh?

only way i'm running the hack on 370's is cuz i raised my fuel pressure.

 

hack should be good for 5psi on the 370s, if you calculate it.

 

Yeah technically it's like 6.5 psi BUT...are you running a .45 bar spring but is the MAP actually seeing that much...either way, I'd throw a code the second I hit 7 PSI.

 

o

what were your settings on the afc?

 

It was about a year ago..I can't remember what happened yesterday, much less what I did back then as a matter of fact, what were we talking about?

 

So u were running 370cc and got a code at 7psi?

 

i'm not getting any codes

 

What are your AFC settings??

 

-33% across

my idle fuel pressure with vacume is 44 psi

 

this is a good site for the "hack:"

http://www.geocities.com/thermalfid16/VAFChack1.html

 

website doesn't work

 

it just worked for me

 

can you run bigger injectors than 450cc

 

i'm sure you could run as big as you like, just make sure you compensate for the larger injectors with the settings. I have not done this yet so I'm clueless on how to adjust it. I can only read what someone else has written and learn from that.

 

to my understand the biggest you can go is about 550's, and then you'll start running into idle issues.

with 440's/450's or wahtever the first gen dsm injectors are, you're good till about 11 or 12 psi, then you'll throw a code. the smaller the injector, the less psi you'll be able to run without throwing a code

all an ecu does it look at the pressure in the intake manifold, and figures out how much fuel to dump in. when using that big of an injector, you adjust the signal that the ecu is getting into thinking that there is a lot less pressure than before, but you'll still be dumping in enough fuel as it had stock.

the beauty in all this is you can keep the manifold pressure quite low, while dumping in a lot more fuel, allowing you to run a turbo.

*edit* dammit back from the dead...my bad


[Modified by skud_dusty, 10:06 PM 3/16/2003]