ok. i have a 04 sti.i had an injen cold air intake on it for a while. the long ram one.. and i know your not supposed to run an aftermarket tunner with the cobb soft ware, so i wanted to see what happens.. ok. well first. the car wants to stall all the time now. after i would get on it and come to a stop, it almost stalls. next i saw im only running about 17.5 lbs boost according to my accessport. then im reading the vaccum in psi at idle.. its onlt around -8.5 or something like that. i thought it should be around -20 psi.
is this all right? im knew to the sti's and turboed cars. i had nothing but mustangs before.
i have the stage 2 93 oct base map loaded right now.
my mods are some ebay company highflow catted "resonators" dp, to catback. full TBE. and the injen long ram intake. and now the cobb stage 2 accessport tunning soft ware...
can you guys help me out? are thoses numbers right or should i get another stock intake system and just put a k&n filter in the stock box?

well i put the stock intake system back on.. same boost about 18. then down to 14 or so. but when im at idle the car almost wants to die?? and my car is only pulling about -9.8 inches of vacumm at idle. PSI that is on my accessport.. arent they suppoesed to be around -20 or so??

let ur ecu learn the new mod, did u reset ur battery?

no i didnt.. hpefully that should fix it.. what do you think about the vaccum and boost levels?

I think you should post in the right damn forum.

maybe if you didnt act like an a$$ hole. i noticed after i posted it, and i got a quick reply from some one else.
loser
didnt you mom tell you to ask politely? hmmm

When I flashed stage 2 on my 04 STi, I noticed my RPM's would drop real low at idle right after I first did it. I was a bit concerned as well. After I drove it around for a little bit, it learned and I haven't had the problem anymore. It did it again after I unplugged the battery, and it had to relearn. It would drop down to below 500rpms idling. I'd usually blip the throttle a couple times and eventually it'd kick back up and now I don't have any problems with it anymore. I am hitting 17.5psi also (.12 on the stock MPa gauge)... seems normal.

That happend when i first put on my exhaust.Drive it around. the ecu has to learn.

yea the idle is fine its just the damn negative numbers at idle that worries me. i thought the car would pull more vacumm then it is doing -9.6 ish at idle

hmm my STi ran fine with typhoon and stage 2/93...and yes my vac is -20

if you must have intake you should get typhoon www.IWSTI.COM

did you read it threw the accessport? real time boost part?? or just a boost gauge

Are you getting mixed up with units? -8.5 PSIG at idle sounds about right off the top of my head, but I don't have an STi to compare to. Barometric pressure is around 14.7 psi = ~30" of mercury, so 8.5 psi of vac at idle ~=17.3" of vac....