NGC4 Cold start rpm.

[StupidJeep]

So I have a 07 GC with an HRT stage two CompCam. Starts, idles and drives ok, still a work in progress. The one thing that I haven't been able to figure out is what tables control start up rpm. I know there have been a couple other posts about it but havent seemed to help. Would appreciate any suggestions

.dec29 22 tb airflow.hpt

[dangrebel]

Hemi start up idle.png

Set the rpm to what you want based on the coolant temp

[StupidJeep]

I have made numerous changes to these tables. They are all set to 750 which is what it always settles down to after. Its the first 40 to 60 seconds that it sits at 1000rpm. It would be higher but i have the rpm cut set to that.

[Jfraser]

post up an idle log, let me see what i can do to help

[StupidJeep]

idle log attached

[dangrebel]

i would set the spark minimum back to stock for a test. the timing flat lines at 0 degrees after startup. The pcm may keep idle speed higher due to not being able to reduce timing to control it.

[StupidJeep]

The min. spark has no effect on the start up idle hot or cold. Still at a loss as to what is controlling it.

[rays04gtx]

sometimes it's the nature of the beast but try this,

I lowered your Max Airflow to 500G/s
And Table 12882 lowered the 1st couple cells by 3% details are in the Calibration notes tab.

[StupidJeep]

Thanks! Ill give it a go and see what happens.

[rays04gtx]

Are you talking about this part here , the initial "roar" after key start ?

[StupidJeep]

Not so much the initial, but it will sit at 1000 rpm for about 60 seconds then settle down to 752. Its the 1000rpm I am trying figure out. I have the Maximum Set Point in Idle Rpm tab table 44231 set to 1000 otherwise it sits at 1200-1300 then slowly settles down. Does it hot or cold....

[LilSick]

this is how i set mine up but i havent tried it yet ha. table 35573. set it up like this for the same reason

[LilSick]

or tame it down even more when its up to 105 deg like this maybe:

[rays04gtx]

the other thing I did in that tune I posted was increase your "stopped Idle VSS" yours was 2MPH , I upped it to 5 MPH , I don't know why but it worked on my Daughters 05 Bee when we tried a Comp 286 H cam.

[StupidJeep]

or tame it down even more when its up to 105 deg like this maybe:

I dont have that table. At least not that I have found, It looks like an NGC3 thing.

[StupidJeep]

the other thing I did in that tune I posted was increase your "stopped Idle VSS" yours was 2MPH , I upped it to 5 MPH , I don't know why but it worked on my Daughters 05 Bee when we tried a Comp 286 H cam.

I did notice that was changed as well. Haven't played with that table too much.

[LilSick]

I dont have that table. At least not that I have found, It looks like an NGC3 thing.

oh right duh. i am new. and the mopar stuff isnt seperated. my bad. i need to remember to start all my threads with gpec2 or 6.4 or hp70. then again you put it right in the top i just didnt know what i was looking at. hope you figure it out