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Hmmm,
nice bug, lucky I didnt order that throttle body.
Back to the old drawing [tuning] board.

Hi All,

Im no expert in Gen4 tuning.
So this car is hard to start especially when warmed up, some weird startup surge and stumble at the right coolant temps can happen, though the engine would...

You can try some settings that fixed my similar problem.
Sometimes less is more with the Idle underspeed/overspeed settings, since this is a feedback loop that is laggy, and can get a bit over...

Ok, does the setting in hpt for Transmission/General/TransType Ive set to manual and PRNDL set to none and consider the ECU as always thinking its in PN cover that or theres more to it? because this...

Frost thank you for your suggestion. :)
1st thing to mention is this table IS completely stock for a 2003 Australian Holden Commodore SS 5.7 LS1, I have compared it to my original saved table and 2...

Im starting to wonder if this is a bug and every car with this ECU has the same issue, its just less noticeable since they have a stock camshaft....

Anyway I disabled both parts of the rolling idle by setting:
- Rolling Moving Idle all to zero, and setting rolling idle to 411kmh, 411kmh.
- set the cracker to 5 & 7 as you suggested
- Idle...

lukearmstrong1990
Ill give that a try,
do you mean disabling Rolling Idle by setting the Idle/RPM/Rolling Moving Idle all to zero? or do you mean setting some parameter in the Idle/Airflow/Rolling...

Ive adjusted a couple of the settings, ST Adapt Airflow Max from ~3 upto 9.3g/s at operating temp, and Idle Base Running Airflow down to a more reasonable 10.1g/s
it seems that revving above about...

I think were onto something now.
Found the STIT and the Idle Follower Airflow and added them both (ps the search feature in HPtuners doesnt find "STIT" had to find "Idle Adapt")


So now I can...

anniversaryss, Ive got all that were available you mentioned except Idle Follower AF, I can do another run tomorrow and get that one if you think its needed.
(note STIT doesnt seem to exist in this...

Added tune file :)

Ive been chasing this issue for weeks, If I rev the car above idle for 5 - 10 seconds it will always run the IAC down to zero, and will either stall or have a near stall experience once I get off the...

Hi,

I cant see any of the mentioned tune tables that people say they attached,how do I get them?
I have a GTO LS2 manual, and a stock GTO tune map would really help me.
The car has had a stroker...

Thanks for that, its a whole thing isnt it.
I was thinking of another solution was putting some electronics in the dash to just mute the beeper speaker when ever the shift light iluminates, that way...

Hi, hoping for some help finding how to fix this,
Im tuning my own car, and it has always had this problem where the dash will beep at you, and it will display "Shift Up" on the LCD most of the time...