Hi guys,

I've been doing some logging on my ride but i find it weird when I set my timing on High Octane map to certain timing but the timing does not give me what I want.

ie : High Octane Map @ 200 Load timing set to 16 deg and 210 Load timing set to 14 Deg but on the logs, timing is @ 13 or 12 Deg (which is on Low Octane map) but sometimes it does goes to 15 Deg which the ecu is interpolating.

Ive also copied from 100-320 load from High Octane map and paste to Low Octane map with -1 degree of timing for safety purposes (no knock reported & that's why I used -1 Deg for testing purposes). But then it still doesn't go to the timing I've set it to and the timing I get is always the lower timing on the Low Octane map.

Of course I do know the ecu is smart to interpolate between load/rpm and high/low octane maps.

As for my AFR's, it is mostly around 11.5 tapering to 11.2 @ 7500 RPM from WB.

Conclusion, sometimes it stays on High Octane map and does interpolate between load/rpm & sometimes it goes to Low Octane & interpolates.

Or is it because of fuel octane rating that makes it jumps around ?

 

I'm pretty sure it can reduce timing from other factors like coolant temp and such, not sure about all the factors though. It doesn't reduce timing just when it sees knock and it has to see long term knock before going to the low octane timing maps with interpolation depending on severity.

 

Not sure it's entirely relevant, but as it does apply to "not giving the timing you have it set to", I thought I'd post this.

Yes, it's on "the other forum".

http://www.***************/forums/sh...ad.php?t=23724

I found it here too. Just hadn't come across it.

https://www.evolutionm.net/forums/ev...wer-bound.html

 

own3d

 

Pssh, I'm used to it.

It's not really a match to this problem anyway, but when people stumble across this thread title, this information will be good to have.

(As I edited above, I found the thread on this site too. https://www.evolutionm.net/forums/ev...wer-bound.html)

 

I am assuming he has a MR since you posted that thread.

 

Yes, if I recall E6-X has a EDM MR.

 

Yeah, he can just lower the table like 5-8 degrees should be good enough.

 

yep it's me heheh edm 08 mr in fact ... i posted on that thread but no respong will post my table up and it looks different . . .