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-   -   Problem with vafc hack (https://www.homemadeturbo.com/engine-management-10/problem-vafc-hack-13940/)

slammin86 Jan 6, 2004 07:25 PM

Problem with vafc hack
 
Got my injectors installed and the car runnin, but it wont hold an idle for some reason. It idles at about 1700 rpm and will bog down to about 800 rpm periodiocally....any ideas as to why?

Dr.Boost Jan 6, 2004 07:26 PM

Re:Problem with vafc hack
 
How about posting up those settings. ;)
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slammin86 Jan 6, 2004 07:34 PM

Re:Problem with vafc hack
 

Originally Posted by Dr.Boost
How about posting up those settings. ;)


to start its a 99 civic si with a vortech supercharger
started at -35 all across and took them all the way down to -50 at idle to see if it would go away, it never did.
Cold idle was about 1100....as the car warmed up the idle raised.

Dr.Boost Jan 6, 2004 08:08 PM

Re:Problem with vafc hack
 
How long has this been installed for?

Any codes? The injectors are known good? Sputtering? Have you taken it on any pulls? How did it run?

How about the rest of those settings. ;)
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slammin86 Jan 6, 2004 08:31 PM

Re:Problem with vafc hack
 

Originally Posted by Dr.Boost
How long has this been installed for?

Any codes? The injectors are known good? Sputtering? Have you taken it on any pulls? How did it run?

How about the rest of those settings. ;)

it has just been done today
no codes yet...it seems to run very strong...but doesnt idle worth a ----. settings are 38 across the rest of the board. Could this be some kind of map sensor problem?

Dr.Boost Jan 6, 2004 08:35 PM

Re:Problem with vafc hack
 
Well, I was referring to the other settings like in/out, sensor type and ---- like that. Are you 100% sure these are all correct?

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slammin86 Jan 6, 2004 08:55 PM

Re:Problem with vafc hack
 

Originally Posted by Dr.Boost
Well, I was referring to the other settings like in/out, sensor type and ---- like that. Are you 100% sure these are all correct?

if you can tell me what they should be i can tell you if they are correct.

Dr.Boost Jan 6, 2004 09:09 PM

Re:Problem with vafc hack
 
Damn, your making it hard on me to help you out here. :-\

Car select: 4 cyl and "/"(pointing up)
Sensor Type: Pressure(don't touch anything else here after you select pressure.
Sens. no: 06/06
DO NOT INITIALIZE(some people have done this thinking you had to in order to save the settings).
I like to set the Th-point to 74lo/75hi, but as long as they are close to each other it shouldn't matter.

So how are we looking now?
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slammin86 Jan 6, 2004 09:14 PM

Re:Problem with vafc hack
 
everything is correct....any other ideas

Dr.Boost Jan 6, 2004 09:17 PM

Re:Problem with vafc hack
 
Everything is hooked up correct? Did you check? Double check? The grounds are hooked up right and the in and out are correct? What does it read for sensors? (ETC>Misc.>sensor check>)
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