what would be a good setting on my vafc? only mods i have are t25 turbo... aem fuel rail and regulator.... vortech fmu... msd external fuel pump... and fmu... i just got the vafc in... and dont know how to set it.. the car is running lean.. and i dont want to risk driving it to a shop and blowing it up.. thanks...

 

Its called dyno time....or set it to -50 all the way across.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BVM &raquo;</TD></TR><TR><TD CLASS="quote">Its called dyno time....or set it to -50 all the way across.</TD></TR></TABLE>

Hes not running the hack...

 

I don't believe you're suppose to have an FMU in a V-AFC hack setup...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aznxphreak &raquo;</TD></TR><TR><TD CLASS="quote">I don't believe you're suppose to have an FMU in a V-AFC hack setup...</TD></TR></TABLE>

Once again...He's not running the hack ....yes its true, once apon a time before the hack was invented there was still ghetto management.

 

you need a fuel pressure gauge to tune thingswith that FMU.

or ditch the FMU and get some DSM 440cc injectors and a set of resistors

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BVM &raquo;</TD></TR><TR><TD CLASS="quote">Its called dyno time....or set it to -50 all the way across.</TD></TR></TABLE>

How can u suggest that if you don;t even know what his setup is?? Hes got FMU and not hack! In any case 50% would be too LEAN!


Modified by swlabhot at 11:29 AM 11/6/2003

 

if he's running lean already, the further you take the vafc into a negative value, the more it leans out the mix. you would need to go into a positive value to add fuel.

 

i'm not looking to keep these settings... like i said it is running lean... i just need to set it... so i can safely drive it to get it dyno tune... i dont have the money to tow... i dont have a clue on how to use my vafc... so if you guys can break it down stupid style for me that would be helpful... thanks for the input guys

 

set it for +35 from 1000 rpm up. keep increasing the values for each rpm point until the car hesitates from being really rich then back it off a few points. that should get you there in better shape than -50 would

 

what is this vafc hack... i have no clue on what that is...

 

The hack is when you increase the fuel supply in boost by using bigger injectors (usually eclipse/talon 450cc) instead of increasing the fuel pressure with a pump/fmu setup. It's kinda cool because you can run more boost than an FMU should support and it is more tunable than an FMU. Also you can run stock fuel pressure which id much nicer to all the fuel components. there are tons of threads on H-T explaining how it works and all the details. it's pretty elegant for being called a hack but it does have some shortcomings. happy searching

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mpir3 &raquo;</TD></TR><TR><TD CLASS="quote">

Hes not running the hack...</TD></TR></TABLE>

No ****. Its just that there is no "set" settings to use so I was being a jackass and telling him to set it to -50.