car bogs going into boost

[sneezy]

ok i have a fully built h22a4 and when the car is building boost,well as soon as the guage says 0psi the car bogs down but when it is in the -10 -20 or any where before the guage says 0 car runs good then as soon as it it 0-5psi the car just bogs down really really bad then as soon as i hit anything above 5psi car pulls hard and runs great up to like around 15psi or so then i here this crackling sound from the motor i dont't think it is detnation because my a/f ratio guage says am on the rich side.so just to be sure i add more fuel in the upper rpm by 4% and the car run like shit turbo spools like crazy but car don't even pull when i add more fuel.so if anybody had this problem before what can i do to get the car to run right?
Thanks.

 

[b16coupe]

I had the same problem when I made my first basemap except it happend at any positive pressure. My problem was that i forgot to set the ignition table for boost and anything above 0psi would make my ignition fire at 6 degrees after top dead center. But that is weird that it does ok from 5-15 psi though. Have you looked at the ignition timing for 0-5 psi?

 

[sneezy]

Originally posted by b16coupe@Oct 20 2004, 08:58 PM
I had the same problem when I made my first basemap except it happend at any positive pressure. My problem was that i forgot to set the ignition table for boost and anything above 0psi would make my ignition fire at 6 degrees after top dead center. But that is weird that it does ok from 5-15 psi though. Have you looked at the ignition timing for 0-5 psi?

[post=405379]Quoted post[/post]​

well i have the msd digital 6 plus with ignition retard activated by a 12v switch
and the way we have it hooked up is at full throttle it retards the ignition by 4 degrees.but even at half throttle it does the same thing.oh i forgot to mention
when it bogs it does that at exactly 4000 rpms then by around 5500 or so the car instantly starts to pull then when i hit around 15psi thats when that crackling noise starts.

 

[sneezy]

Originally posted by sneezy+Oct 20 2004, 09:28 PM-->

b16coupe

@Oct 20 2004, 08:58 PM
I had the same problem when I made my first basemap except it happend at any positive pressure.  My problem was that i forgot to set the ignition table for boost and anything above 0psi would make my ignition fire at 6 degrees after top dead center.  But that is weird that it does ok from 5-15 psi though.  Have you looked at the ignition timing for 0-5 psi?

[post=405379]Quoted post[/post]​

well i have the msd digital 6 plus with ignition retard activated by a 12v switch
and the way we have it hooked up is at full throttle it retards the ignition by 4 degrees.but even at half throttle it does the same thing.oh i forgot to mention
when it bogs it does that at exactly 4000 rpms then by around 5500 or so the car instantly starts to pull then when i hit around 15psi thats when that crackling noise starts.

[post=405402]Quoted post[/post]​

turbo is a t3/t4oe 60 trim 57a/r

 

[[Freemantle]]

What fuel management are you using?

 

[sneezy]

Originally posted by [Freemantle]@Oct 20 2004, 09:37 PM
What fuel management are you using?

[post=405414]Quoted post[/post]​

I am using a set of 440cc injestors from RC
255lph in tank pump
aem fuel rail
aem adjustable fuel pressure regulator
and the v-afc
my fuel pressure is set at 55psi and 60 under load
my settings on my v-afc is as follows:


V/T UNMT:
hi<<L:+3%
Lo<<H:+1%

TH-Point:
LO HI
35% 80%

NE-P:HVT
NE1:4000RPM
NE2:4500RPM
NE3:5OOORPM
NE4:5500RPM
NE5:6000RPM
NE6:7000RPM
NE7:8000RPM
NE8:9000RPM

NE-P:LVT
NE1:1000RPM
NE2:2000RPM
NE3:3000RPM
NE4:4000RPM
NE5:5000RPM
NE6:5500RPM
NE7:6000RPM
NE8:7000RPM

NARR LVT
3000 +1%
4000 + 3%
5000 + 3%
6000 +5%
7000 +5%

WIDE:
from 3k to red line it's + 5%

 

[posol]

welcome to vafc hack hesitation.

the vafc is your problem.

 

[UDT]

Originally posted by pissedoffsol@Oct 21 2004, 05:51 AM
welcome to vafc hack hesitation. 

the vafc is your problem.

[post=405557]Quoted post[/post]​

I agree. And That turbo with that much boost you should have all ready had a stand alone fuel management. Its amazing how many people try and try to skimp on there management. Im sure you have heard but guess what........... your gonna hear it again hondata or if you still wanna skimp uberdata


Ha my memeber numbers higher then your post count B

 

[[Freemantle]]

I figured it was the hack, but I didn't see a missing link in his setup...

That's a whole new level of VAFC hesitation.

 

[posol]

you don't use a missing link with the hack....

 

[beerbongskickass]

Built h22 and an afc for fuel management?

 

[StealthMode]

Originally posted by pissedoffsol@Oct 21 2004, 02:05 PM
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

but could you?

 

[[Freemantle]]

Originally posted by pissedoffsol@Oct 21 2004, 02:05 PM
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

I wouldn't run the setup so I wont defend it, but i've seen it done before.

 

[sneezy]

Originally posted by [Freemantle]+Oct 21 2004, 04:47 PM-->

@ Oct 21 2004, 04:47 PM)]pissedoffsol

@Oct 21 2004, 02:05 PM
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

I wouldn't run the setup so I wont defend it, but i've seen it done before.

[post=405764]Quoted post[/post]​

where can i find a aem system for a really good price?

 

[[Freemantle]]

H-T Classifieds? If you are going for the stuff taht requires $, you really can't talk the dollar amounts down. The hondata basic hardware costs less than your VAFC.

 

[handlebarsfsr]

Originally posted by Callidus+Oct 21 2004, 04:22 PM-->

pissedoffsol

@Oct 21 2004, 02:05 PM
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

but could you?

[post=405747]Quoted post[/post]​

all a vafc does is modify the map signal, so if you put a missing link in there that bypasses the map, you defeat the vafc.

 

[posol]

Originally posted by Callidus+Oct 21 2004, 05:22 PM-->

pissedoffsol

@Oct 21 2004, 02:05 PM
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

but could you?

[post=405747]Quoted post[/post]​

sure- but it won't do anything. keep the $65.

 

[posol]

Originally posted by [Freemantle
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

I wouldn't run the setup so I wont defend it, but i've seen it done before.

[post=405764]Quoted post[/post]​

[/QUOTE]

there's 2 ways to run the vafc.

Normal mode:
standard injectors, fmu, missing link, vafc set to add a little bit of fuel up top/in boost

Hack:
large injectors, no missing link, vafc set to negatives to tune down the large injectors off boost, and gradually working its way to 0 up top/in boost to use the full injector's fueling without flodding at idel.

 

[posol]

Originally posted by handlebarsfsr+Oct 21 2004, 09:54 PM-->

Originally posted by Callidus@Oct 21 2004, 04:22 PM
pissedoffsol

@Oct 21 2004, 02:05 PM
you don't use a missing link with the hack....

[post=405694]Quoted post[/post]​

but could you?

[post=405747]Quoted post[/post]​

all a vafc does is modify the map signal, so if you put a missing link in there that bypasses the map, you defeat the vafc.

[post=405917]Quoted post[/post]​

not excactly... whehter you bypass the map or not with the missing link, the vafc will still send the ecu its setting that you manually set it to.

 

[posol]

Originally posted by [Freemantle
,Oct 21 2004, 09:41 PM]H-T Classifieds? If you are going for the stuff taht requires $, you really can't talk the dollar amounts down. The hondata basic hardware costs less than your VAFC.

[post=405907]Quoted post[/post]​

aems used ~~ 800
new, 1100-1300 ish

my buddy has the first one ever for sale on ebay right now.
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=33597

hondata, with everything you need to tune your own car, chip burners, etc etc (minus a laptop) 950-1000