i'm tuning a friend's car.
bseries 2L
1000cc
air intake manifold (iacv is isolated)
gt35

so it's like this. it idles at 800-900 fine, without a/c when i tip in the throttle to like 4trpm, when it goes down, it reached around 500rpm and revives the idle speed.

but when i turn on the AC, no matter what idle speed i run it, EVEN 1.5trpm idle, after a tip in, it goes down straight and engine dies on me.

i tried aem, s300, crome.

tps is set to 0, tried ign from 5 - 20, fuel is okay, vacuum at idle without ac is 250mbar, and with a/c is 350mbar. (too much vacuum?) cam gears are at 0,0.

 

Check your a/c system's pressure make sure it is not too high...

 

how high is too high?

is 250mbar @ idle 800rpm no a/c too low? because my car idles at 800rpm also and i get around 450-500mbar. i know i dont have any leaks because turbo is spooling pretty nicely with no boost leak.

 

hey i have a gsr with a jackson charger on it, with a chipped p28 by jktuning
my car does the same exact thing, it drives perfectly fine with the a/c on but when i come to a stop it dies, not evry time but often ive also tryed everything

 

Was it chipped or did you actually have it tuned? Talk to JK about making the appropriate adjustments.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ralph11sec &raquo;</TD></TR><TR><TD CLASS="quote">how high is too high?

is 250mbar @ idle 800rpm no a/c too low? because my car idles at 800rpm also and i get around 450-500mbar. i know i dont have any leaks because turbo is spooling pretty nicely with no boost leak.</TD></TR></TABLE>

Check the helms manual for factory specs.