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read the AFC HACK...installed the injectors leaned them out with the vafc to 47 but it didnt idle that great so i went to -50(they are 450cc not 440cc like the thread talked about)...car idles choppy even at -50 are these injectors to big? will i need 440cc's or is it alright to have the car idle like it does..
this guy seems to be talking about the same idle and starts that i have(this quote was posted in the afc hack thread in the faq section)

Quote:
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For the question regarding the 450cc injectors being good at 16psi, they should because I'm running them with 15psi. No problems at all, but I was told that they were at their top duty cycle at that psi. For all you supporters of the AFC hack, do you guys have the fucked up idles and fucked up starts? If those two problems would go away, the hack would be perfect. I mean perfect idles, not almost perfect. Also, is there any way to tune the AFC hack?

 

Take less fuel out at idle, e.g. -30% trim. When I ran the AFC hack, my car wouldn't idle unless I put alot more fuel in.

 

will i notice and immediate difference? cause i went down to -40 and it just smoked and was runnning way richer then before.it idles at -50 but choppy and when i give it gas it sounds like the motor is missing

 

are you using some sort of missing link?

 

That's weird. I have mine set at -40, and My Idle with the DSM's is really low. It idles at like 800rpm's when its cold and about 400 when it's warm or hot. Also, whenever I decelerate, like downshift and then pull in the clutch, the tach needle will drop really low, to about 200rpm's and then go back up. Also when it's warm, it will do that and then my car will stall. Anyone know what this is related to?

 

hoodwinked- no i am not using any sort of missing link just the afc hack

i think the reason the car is running choppy when i give it gas was due to the gap in the spark plugs...i might try the dsm injectors agian tomorrow with some new colder spark plugs maybe that has been my problem..the car has been running crappy when i get on it a little since i wire brushed the plugs to clean them and screwed the gap up

i was also thinking that the resistor box may not be working and the injectors are spraying too much fuel

 

my hack and my 450 idles really good, even before I got it dyno tuned.. I had RC cleaned my injectors before I installed them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrdjay107 &raquo;</TD></TR><TR><TD CLASS="quote">my hack and my 450 idles really good, even before I got it dyno tuned.. I had RC cleaned my injectors before I installed them.</TD></TR></TABLE>

so u can just plug and play some 450cc DSM injectors on a 88-91 Civic CRX OBDO car with a VAFC and or a SFC-VTEC????
theres no other mods to prevent the ecu frying the injectors ???
i have had burnted OBD1 injectors before.. so i dont know if the DSM are or not going to fuse

 

as long as you still have your resistor box in there, you'll be fine.

 

cummon guys, you should be able to pick this **** out in a minute. afc hack has been around long enough already.

post starter:

SET YOUR SENSOR TO PRESSURE
SET YOUR SENSOR IN/OUT both to #6

Good luck!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrdjay107 &raquo;</TD></TR><TR><TD CLASS="quote">my hack and my 450 idles really good, even before I got it dyno tuned.. I had RC cleaned my injectors before I installed them.</TD></TR></TABLE>
what was your setting in what car?

 

Try setting all your maps to zero, set Sensor in to 06 and sensor out to 14. That worked for my RC 440's. Read my post about the 3 bar hack..I'm too lazy to make a link

 

I have my idle set at -40% and it idles nicely. My injectors were cleaned, balanced, and flow tested by marren fuel injection. The place is great.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integrx &raquo;</TD></TR><TR><TD CLASS="quote">
what was your setting in what car?</TD></TR></TABLE>
WIDE
Lvt Hvt
1k -36 55k -33
2k -36 6k -34
3k -39 65k-36
4k -37 7k-41
45k-36 75k-50
5k -36 8k-50
55k-36 85k-50
6k -36 9k-50

NARR
Lvt Hvt
1k -33 55k -41
2k -39 6k -38
3k -40 65k -37
4k -40 7k -38
45k -39 75k -36
5k -42 8k -30
55k -33 85k -30
6k -30 9k -30

this is on a 89 hatch stock b16, p28 chipped ecu.. those # are settings from the dyno. I suggest you get yours dyno tuned. different mtor will have different settings.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnyquest &raquo;</TD></TR><TR><TD CLASS="quote">cummon guys, you should be able to pick this **** out in a minute. afc hack has been around long enough already.

post starter:

SET YOUR SENSOR TO PRESSURE
SET YOUR SENSOR IN/OUT both to #6

Good luck!</TD></TR></TABLE>

where do i set my SENSOR TO PRESSURE ? MY IN/OUT SENSOR IS AT 6

car is still smoking

 

Your looking for "sensor type" or whatever. It's under the ETC menu. Sensor type MUST be set to PRESSURE!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnyquest &raquo;</TD></TR><TR><TD CLASS="quote">cummon guys, you should be able to pick this **** out in a minute. afc hack has been around long enough already.

post starter:

SET YOUR SENSOR TO PRESSURE
SET YOUR SENSOR IN/OUT both to #6

Good luck!</TD></TR></TABLE>
Thanks for posting. This made a night and day difference on a turbo F23. With the sensor in/out both at #1 the car ran EXTREMELY rich and bogged heavily.

I've done at least a dozen AFC installs but never had to mess with the sensor input/output settings. Pays to RTFM sometimes.

 

anyone use 345cc prelude injectors? if so what should i set the vafc fuel map to?

 

set the afc to -47 which will yield close to the equivalent of 240cc inj and -46 the rest of the way accross of the lo throttle corrections. you will have to readjust your idle at your throttle body and it should be good to go...at least that's what i did and it idles like stock.

what i think happens is when the afc is installed the ecu tries to compensate for it and can't figure out what to do unless you make that idle adjustment. when i had my corrections set richer and before i readjusted my idle it would idle really rough and bounce slowly at idle or even stall because it was so rich. i had to keep my foot on the gas slightly at lights and stop signs to keep it from stalling. after i adjusted the idle and reset the ecu no more problems.