Idle Issues

[GazzaG60]

i have valve fitted and not in use.

idle control can be a pig. it was perfect on stock cams and injectors. it fluctuates sometimes now.

Jamo has it really. use the valve. and the diode and newer firmware.

setting the damper tighter helps as it slows the speed of the throttle closure.

this issue occurs in rapid changes in vac. the engine will catch but go up-down-up. a timing trough helps here too.

[Tuna]

Problem Idle

Hi everybody!

I have read several threads here with various suggestions for different idle settings.
I have updated the firmware from 1.1.27 to 1.1.80 and i have mounted the diode.

with the new firmware, a new set of preferences that are not in the earlier thread Arena appeared. would anyone want to post screenshots of the new settings?

Or best of all if someone wanted to check my config so it is ok so there was no error in the change of firmware from 1.1.27 to 1.1.80 ,and maybe add a few settings for idling that can fit into a s2 with rs2 setup.

Is the idle channel 6 or 5 ? i have 6 ,but I've read that some are running 5

I'm not so good at this so I went to a Tuning company.The setup was good but not the idle so now I have tried to fix it myself using the little knowledge that I have,but it didnt end up so good, it didnt make it easier that i upgraded the firmware.

Grateful if someone would help

Regards
Johan

[dkw_dude]

Here's my settings. Works quite good for me anyway.
IAC Integral Minmap is 30 kPa (not possible to see in the PID settings screenshot)

[Jamo]

Nice settings, I don't use ignition idle at all in mine, it's disabled car feels rough on idle with it on my engine when it changing the timing

[dkw_dude]

Ok, it's a bit tricky, feels ok on mine, I let ignition idle have just a few degrees to work with. I think Motronic adjusts big deviations with IAC and uses the ignition for fast/small changes. Don't know if the IAC/ignition idle works in sequence or simultaneously in VEMS?

[Jamo]

the value threshold hold fo activating IAC controls that, you have it set so that after 2 degrees of change the IAC will then come into play

[Tuna]

yeeessss, dkw dude thanks a lot for the settings. I'll try your settings tomorrow and see if they work on my car.

would be very good if someone more wanted to put up their settings like dkw dude so I have a bit more to work with if his settings does not fit my car.

Regards
Johan

[Jamo]

yeeessss, dkw dude thanks a lot for the settings. I'll try your settings tomorrow and see if they work on my car.

would be very good if someone more wanted to put up their settings like dkw dude so I have a bit more to work with if his settings does not fit my car.

Regards
Johan

Johan you have to tune idle to your car, no two idle settings will be the same in VEMS for the same engine type

You can use his as beginning template but your going to have to spend time mapping idle

[s2martyn]

i have got rid of the iac and run idle off the butterfly stop.works fine for me,but then its not a daily runner...cold start is poor(as you would expect)

i still have some settings in there that are similar to the ones posted...this was the area that was mapped first...

[GazzaG60]

hows the car in general now martyn.

[s2martyn]

hows the car in general now martyn.

pretty good really..not been out in 6 months..had it pro re-mapped and put it away.....

had a wastegate issue,but sorted that..going back to the rolers next week for some more tuning..

[dkw_dude]

the value threshold hold fo activating IAC controls that, you have it set so that after 2 degrees of change the IAC will then come into play

Ok, wondered what that setting was, thanks

yeeessss, dkw dude thanks a lot for the settings. I'll try your settings tomorrow and see if they work on my car.

Lets hope the settings work ok. As mentioned you will need to fine tune on your car (PID settings). Try with different loads, all electrical equipment on and let i idle a while and see how it works when heat soak increases IAT and influences the idle.

[Tuna]

Hi

I tried your settings today, the warmup was ok ,but after that the engine started to go bad.
instead of going down in Rpm it went up in Rpm to 1500 , can not understand what is wrong?

[dkw_dude]

Hm not sure, post your .vemscfg file and a logfile maybe it's possible to work something out of it. I see you have 1.1.80 config, maybe something is different ther compared to my 1.1.70 setup.