WS6FirebirdTA00

iTrader: (33)

ok i tried to seach this but its not letting me, it throws that page up that says refresh, some sort of technical error. it does this every time i try to search

i know there are threads about it but i cant find them. the car used to be ok, i adjsuted some more idle and now its doing this. the ve needs to be tuned some more its out of wack again (fixed the injector table, the main change since the last tune) so would this be in the ve tuning or may i have to check some other things out.

if there is somethign else that needs to be adjusted what is it and how should i adjust it. ive got it in some papers i think but its not too clear

SSpdDmon

iTrader: (10)

With all of the reading I've been doing here the last few months, I've seen people talking about how tuners used to (and some still do) tune through the ifr table essentially tricking the motor into thinking it has smaller injectors than it actually does to add more fuel. So, I would guess that if you had a good ve table and changed your ifr table, your ve table is no longer accurate. That may be the source of your problem.

Cool Z

When does it hang? Rolling at speed or stationary? Clutch pedal in or out?

WS6FirebirdTA00

iTrader: (33)

rolling speed, clutch out and in, but at a stop its ok, like if i move the car in the driveway the rpms dont hang. i adjsuted the ifr table to accurately account for fuel rail pressure, so ill try to retune the ve first and see what happens. thanks

jimmyblue

iTrader: (11)

You were posting earlier about your IAC being
pegged out. The throttle follower also uses
the IAC. I think you are wanting too much idle air
and probably from mixture related problems at idle.
Is your idle RPM target or airflow target jacked up?
Check that your O2s are rattling around nicely
so you at least believe the closed loop mixture
is right (loop is tight and in control). If so then
you can discount the mixture (in closed loop at
least). If I understand this latest problem (you
are cursed, dude ) it's the throttle follower
giving you more bypass air than you want it to,
or more than it thinks it is.

It might be time to take a step back, after you get
the injector and VE stuff where you think it's right,
and revert to a fully stock set of idle settings; or
revert to a stock tune and just put specifically the
injector, VE and other "known good" tables. ****
builds up after a while, sometimes you just have
to move because it's too hard to clean up. Know
what I mean?

WS6FirebirdTA00

iTrader: (33)

yeah i got ya, yes my iac ix maxed out now at idle, its at 310 when its cold, before it was 260ish but the table was so far off the airflow values were off by 6 g/sec or so. once the car comes off the cold warm up and airflow decreses the idle gets a lot better, like the post on hp tuners forum, the idle pulsates from a cold start, then gets better

im just wondering how much airflow to have at idle? maybe set my rpm target lower. the more i think of it the more i feel its ve related, the car hasnt done this before. i dont know maybe because the iac has been adjsuted but ill look at the count for the iac when it hung up, if its not over 300 then that shouldnt be an issue.

how do i know if i am commanding too much air at idle on cold start? im about to go log it so if you would like to see the log i can show you what i mean, i have a bunch of idle parameters in there

also, what kind of timing should i see at cold start, im getting about 12*?

Cool Z

I was thinking the throttle cracker is making the throttle hang. The 2000 M6 has quite a bit in the 1000-1600 rpm range. As far as your idle, have you tried opening the Throttle stop screw? If so, by how much? Your IAC counts need to come down. Once you get the idle dialed in, then you can play with the throttle cracker.

WS6FirebirdTA00

iTrader: (33)

ive got 25 tunes for the idle alone lol ive been doing a lot of that, need to do some ve tuning to get the idle trims in line now. my ve table is a little out of wack, could be my issue. i have messed with the set screw, now i get about 30-50 iac at idle, which is about normal