Problem with vafc hack
 

I have a 99 civic si with a vortech supercharger. I recently got some 440 injectors and did the vafc hack.
My settings are
1000 and 1500 -40
2000 and 2500 -39
3000 and 3500 -38
4000 and 4500 -37
and so on....
my problem is when i try to hold the rpm's at between 2000 and 3500 rpm....every second they drop down about 500 rpm's then they go back up. When i richened the range from 2000 to 3000 up to -30 and from 3000 to 4000 up to -29....my problems go away but it is very rich. does anyone have a cure for this problem?

Re:Problem with vafc hack
 

does your speedo work? check the alt ss fuse in the dash. Just a thought. That was one of the symptoms when my fuse blew, but if that is the only symptom, than the fuse probably isn't it. Other than that, ya got me. Sorry I'm not much help. :-[

Re:Problem with vafc hack
 

yeah the speedo still works, i posted this same question on honda-tech.com and it seems others are havin the same problem. at least im not the only one...
here is the link
http://honda-tech.com/zerothread?id=736356

Re:Problem with vafc hack
 

still having this prob?

Re:Problem with vafc hack
 

how much boost are you running?

Re:Problem with vafc hack
 

yep im still havin it.
Im at 8 psi

Re:Problem with vafc hack
 

ok i have a theory for you...

with this being a vortec SC I believe they have a BOV that is designed to bleed of boost during part throttle.

with that in mind, your lo/hi th positions % is set at what?

Re:Problem with vafc hack
 

check out my other post about new settings with the wideband