Positive FLKC?

[BFIFE22]

While driving the other day with my OFT on, I noticed there were a couple points where the FLKC value was in the positive between .35 and .65 and at a brief point it went past 1. IAM was at 1.00 the whole time, so it wasn't the ECU trying to recover the IAM back to 1.00 after pulling some timing due to knock.

Is there any reason why the car would randomly advance timing like that? Or has the timing been pulled too much in that load/rpm area by the tune and the car is just compensating?

[makinen]

The latter.
Those cellls could have benefit by advancing the amount of FLKC values.

[phrosty]

I've never seen positive FLKC with an IAM of 1.

[steve99]

Sounds weird that iam=1 and getting positive flkc


maybe logging issue.


what is rom calid ?


can you post log to www.datazap.me


not really possible unless you have done something really weird like changing the flkc correction retard value to positive value in tune instead of negative. this will make ecu ADD timing on knock detections instead of retarding timing

[fibble]

I'm with Steve.

Sounds fishy...... I also suspect logging issue.

How did you know that IAM was 1 at that time?

[BFIFE22]

Originally Posted by fibble

I'm with Steve.

Sounds fishy...... I also suspect logging issue.

How did you know that IAM was 1 at that time?

I use the display where you have 3 parameters displayed in large numbers, and have FLKC, IAM, and Oil Temp displayed. Once OFT made the alert sound I glanced at it and IAM was 1.00 the whole time it said I had positive FLKC

I've never seen it do this before, and I have had this tune on my car for months, so maybe it is a logging/display issue.

If I notice it again I'll try to repeat the result and record it on the OFT

[Kodename47]

Originally Posted by steve99

not really possible unless you have done something really weird like changing the flkc correction retard value to positive value in tune instead of negative. this will make ecu ADD timing on knock detections instead of retarding timing

I think the FBKC and FLKC retard value settings are absolute and therefore doesn't matter if positive or negative. I know there are some values to do with ignition retard that are like this.

[steve99]

Originally Posted by Kodename47

I think the FBKC and FLKC retard value settings are absolute and therefore doesn't matter if positive or negative. I know there are some values to do with ignition retard that are like this.

Mr Merchgod reckons its possible, was in subbie legacy ecu but I suspect logic similar to ours.


http://legacygt.com/forums/showthrea...html?p=2457316


http://legacygt.com/forums/showpost....0&postcount=24