mrfred

iTrader: (50)

Found more info on High IAT idle and updated the definitions in my earlier post.

oldevodude

iTrader: (3)

Actually target idle does not change but actual idle drops this might be due to load caused by more alternator drag?

My car did not get done so I have not had a chance to check out maps and I need to pull plugs as I'm experiencing higher boost "blowout" I hope or cutout

I will grab updates gotta get all this worked before Red arrives

Thanks

biggie5252

iTrader: (47)

SI would like to think that the blower motor doesn't pull so much starting current so that the alternator wants to slow down so much to actually slow the motor down. I think i'd prefer the belt to slip through the transient. I know my rpm seem to drop a little bit when my radiator fan kicks on.

mrfred

iTrader: (50)

Its the transient load on the alternator. When an electric motor is turned on, the startup current can be quite high and put a substantial transient mechanical load on the alternator for a split second or two.

Resi

On a hunch, i decided to use the SAS Actuator and check the BISS idle. It was really low (~400-500), so i adjusted it up to 800rpm, and the transition for the heater and AC is now flawless.

Gonna test some more today, but last night seemed great.

Now just need to see if i can get the warmup idle a little lower.

mrfred

iTrader: (50)

Use the "Target Minimum Idle" table for that.

Resi

just added that to my xml, ill give it a shot tonight.

after testing the AC and heater today while driving, the initial activation of both the heater or the ac, the idle will apparently drop down to whatever my BISS is set to. Since adjusting it yesterday, the heater and AC will drop to 800rpms for the first 5-10 seconds, then resume normal idle (1000rpms).

Gonna test out the target minimum in a bit and ill post my results tomorrow.

Resi

Unfortunately adjusting the Target Minimum Idles table didnt have any affect. When I started the car, it jumps to 2.5k, then tapers to 2k after a few seconds, and then slowly tapers back down to 1k for a couple minutes till them temp reaches ~180F.

Ill see how it is when I head to work in the morning.

mrfred

iTrader: (50)

The idle spike on startup is probably a stepper issue. I'm going to start looking at the stepper control subroutine(s) over the next couple of weeks.

oldevodude

iTrader: (3)

This gets cooler by the day

vboy425

iTrader: (19)

nice

biggie5252

iTrader: (47)

I can't wait for the stepper control stuff. At the moment, my car idles as perfect as it has since stock with the old tables, so I'm scared to try the new ones.

MR Turco

iTrader: (16)

after my perrin intake and ported intake mani install i notice my idle seems to be at 1000rpm AC off. has anyone experienced anything similar? I will try to adjust these tables but i fear something else might be wrong unless this is expected.

shadow1

iTrader: (38)

Any updates on the correct Desired ISCV table addresses?

Edit - nevermind. I found mrfred's extensive ISCV thread.
https://www.evolutionm.net/forums/ec...sassembly.html

poyz

Bumping a very very old thread, but wondering you ever got around to figuring out the triggers of Target Idle for Off Normal MIVEC? My car is always uses this value and wondering why it's doing it.

Thanks.