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Author Topic: Ignition retard on overrun  (Read 10960 times)
KasperH
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« Reply #15 on: May 15, 2020, 03:21:51 AM »

Kfvakl kfbakl?

Have thought about trying KFVAKL, but is it active when B_sa=0?
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KasperH
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« Reply #16 on: May 15, 2020, 03:22:53 AM »

Thanks for ansfer. I'm running On 1ML906032 ECU. My car 1M1 Leon Cupra.
Ok maybe together we find solution.
What timing do you have?

I have subtracted 20° from KFZWMN/MS right at this moment.
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Dejw0089
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« Reply #17 on: May 15, 2020, 07:59:58 AM »

I have subtracted 20° from KFZWMN/MS right at this moment.
What about KFLAMKRL?
ok I have modified KFZWOP/2 2 row and change axis to load on throttle = 0
first row from KFZW and axis load too
KFZWMIN/MS
 ignition is  -3 on 1280 RPM to -24 angle on 7000 RPM on low ignition I have nice gargle ( Max -10) on -15 and higher I have detonation pop
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KasperH
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« Reply #18 on: May 15, 2020, 12:55:00 PM »

What about KFLAMKRL?
ok I have modified KFZWOP/2 2 row and change axis to load on throttle = 0
first row from KFZW and axis load too
KFZWMIN/MS
 ignition is  -3 on 1280 RPM to -24 angle on 7000 RPM on low ignition I have nice gargle ( Max -10) on -15 and higher I have detonation pop


KFLAMKRL is only used when engine is retarding ignition when sensing a knock event.

Have you changed KFZWOP/2 and KFZW load axis or?

Don't change KFZW, it will have no effect on overrun ignition timing.

Right now I have all my overrun happening above 2500 RPM
so i can daily my car without pissing the entire city off.
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Dejw0089
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« Reply #19 on: May 15, 2020, 01:43:38 PM »

KFLAMKRL is only used when engine is retarding ignition when sensing a knock event.

Have you changed KFZWOP/2 and KFZW load axis or?

Don't change KFZW, it will have no effect on overrun ignition timing.

Right now I have all my overrun happening above 2500 RPM
so i can daily my car without pissing the entire city off.
KFZWOP axis low value from log when in overrun and map too
KFZW low value... For me has effect...didn't bumping ignition
Normally on longer pop time has:
Pop... Pop... Pop... Quiet... Quiet... Pop... Pop... Pop...quiet...quiet...pop...etc
When set first rów on KFZW same as KFZWMIN then have stable pop but must set first axis value as in overrun log and second a bit higher for normal operation.
Under 2500 rpm to ~1700 i have - 10° and lower rpm set to -8 go to - 3 when rpm is 1200 and have very nice gargle
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Dejw0089
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« Reply #20 on: May 16, 2020, 09:11:55 AM »

Ok I do some test and my desired lambda is 0,9141 on overrun
only one map match to this setpoint
LAMRLMN is set to 0,9141 so I try to set it to 1 and see what happen
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Dejw0089
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« Reply #21 on: May 18, 2020, 04:28:20 AM »

KFLAMKRL is only used when engine is retarding ignition when sensing a knock event.

Have you changed KFZWOP/2 and KFZW load axis or?

Don't change KFZW, it will have no effect on overrun ignition timing.

Right now I have all my overrun happening above 2500 RPM
so i can daily my car without pissing the entire city off.
For me KFLAMKRL is that what I need. Lambda desired is as set in that map.
Yes it used for retarded ign but we have that for pop.
So lambda in my case follow as I set in that map
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Albertoak
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Well done is better than well said....


« Reply #22 on: May 19, 2020, 12:17:34 AM »

I tell you how I carry it in med 9 ....

In this way I have good pops overrun and from 3k down, the rpm drops gurgling.

I have to find out because when I change gears you can't hear the pops ... something interferes with the injection of gasoline. Why if I upload the KFNWEGM map to the maximum rpm. if pops are heard when changing gears ... if anyone has any suggestion. welcome.
« Last Edit: May 21, 2020, 05:12:25 AM by Albertoak » Logged
Dejw0089
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« Reply #23 on: May 19, 2020, 02:34:53 PM »

did you log condition fuel cutoff? B_sa in ME7 maybe in ME9 too?
KFNWEGM is resume map engine speed so if you set to max rpm fuel isn't cut so something isn't set properly and fuel is still cut when the gear is changed
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Dejw0089
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« Reply #24 on: May 19, 2020, 02:35:27 PM »

And for KasperH
I set KFLAMKRL map to 0,85 and ignition for -7 to -10 for normal drive rpm and car gargling as I want so try change it too
« Last Edit: May 19, 2020, 02:38:18 PM by Dejw0089 » Logged
Albertoak
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Well done is better than well said....


« Reply #25 on: May 20, 2020, 12:10:10 AM »

did you log condition fuel cutoff? B_sa in ME7 maybe in ME9 too?
KFNWEGM is resume map engine speed so if you set to max rpm fuel isn't cut so something isn't set properly and fuel is still cut when the gear is changed


if in med 9.1 b_sa fuel cut condition is the same.
if I upload the KFNWEGM maps to the maximum RPM. If heard when changing gears. But if I apply the overrun configuration, no ... It only occurs to me to only raise the rpm to maximum gear 0 in KFNWEGM.
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KasperH
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« Reply #26 on: May 21, 2020, 07:38:29 AM »

Unfortunately my car is off the road at the moment because of a split coolant flange Undecided
I have a cast aluminium set on the way, but it wont be here until next week.

So i cant test at this moment, but i will try the KFLAMKRL map and see if my injection time changes Smiley
Although im not wanting a fatter mixture, it will be interesting to see if it has any effect.
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cessnas
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« Reply #27 on: June 04, 2021, 02:07:01 PM »

Did you get anywhere with this? I want to change my overrun mixture aswell to get more of a crackle from the exhaust  Grin
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drbluetongue
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« Reply #28 on: March 06, 2022, 12:14:30 PM »

Need to do TVSAG0 to stop fuel cut in N/gear change
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