Hi,
can someone share on how to set the evo 6 ecu to operate full time open loop?
What is the advantage & disadvantage?

Thanks

 

advantage is full control over AFR when CL cant: IE super aggressive cams and idle on MAF. Also during cruise you can lean out some, or richen to your desire. Bad things.. your compensation abilities are decreased slightly and your AFR for a given setting may vary a little more during weather conditions.

I run full open loop.

 

Thanks for sharing and how do make it full time open loop on a 6 ecu?

 

put your open loop tps/load thresholds lower

 

Some xmls have a minimum coolant temp for closed loop defined also. If you set this to a temp that the coolant never reaches it will achieve the same effect and is quicker to do as you are only changing one value.

 

that will trigger cel after some time I believe. as well as disabling it via peripery bits does

 

Hi Stunt2,
which is the one that i need to adjust?
1) Open Loop Load 1?
2) Open Loop Throttle Low Load?

Will switching to a full time open loop effect the existing tune/map?

Thanks

 

You can adjust both maps. It will affect you closed loop area, so yes, we can say it will affect your tune.

 

Thanks but how to make it to a full time open loop? Which area should i set it and what is the figure should i increase or decrease?

Thanks

 

set all values in both that tables say at 10

it means that when the car passes 10% tps or 10 load it will enter open loop. but average tps is 12-14% at idle, and load is somewhere 30-40. so the car is always above that (10) threshold and thus constantly in open loop

it may affect roughly 0-80 load and 0-4500 rpm area, so check your afrs in that cells

 

Not with the 7-9 ECUs it doesn't. I have done it many times this way, never had a CEL. I can't say for sure with the 5-6 ECUs.

 

I can confirm this as well.

 

For example:

 

Thank you so much Dolphin...

So, i just set all the values as per yr pics right?

 

Yes, but it may be, that you have % instead volts in TPS maps because of different scaling.