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Title: timing correction after log during WOT Post by: pieros_net on February 13, 2019, 06:31:00 AM hello guy,
as my introduction i'm study my ECU ME7.x on Audi TT mk1 BAM since 20 days by this forum and the wiki information. I'm in the end of my maps, but I don't have clear idea about the ignition advance timing to tune on KFZW, KFZW2 I have exhaust completed without kat, AFR on high load around 12:1 and boost pressure peak 1.5bar and drop until 1 bar at redline. please see attached increment done by me on the KFZW I'm on the right way? any suggestion? can I rise more at high load/rpm? thank you Title: Re: timing correction after log during WOT Post by: aef on February 13, 2019, 06:54:25 AM no retard means you can advance more
depends on iat, where you live, fuel and so on Title: Re: timing correction after log during WOT Post by: pieros_net on February 13, 2019, 07:05:03 AM so the filosophy of setup the tune should be correct.
I will start the trial with this configuration and in case, if no retard showing I will continue to rise how much is possibile. but you confirm me that if I start to use these values I cannot damage engine? max can happen high retard, correct? thank you again Title: Re: timing correction after log during WOT Post by: nyet on February 13, 2019, 10:07:28 AM There isn't much point in increasing timing in part throttle/low load areas
Title: Re: timing correction after log during WOT Post by: fknbrkn on February 13, 2019, 10:09:26 AM Beware of agressive timing in mid-range rpm and high loads. Stock rods pretty weak for that
Title: Re: timing correction after log during WOT Post by: pieros_net on February 13, 2019, 10:23:54 AM ok, I wil start to reduce advance timing in the middle range around -3, and increase +3 on high rpm
what I attached looking good? Title: Re: timing correction after log during WOT Post by: nyet on February 13, 2019, 10:25:19 AM IMO anything 150 and below load should remain stock, unless you are running E85
log a WOT run in a few different gears and see where load/rpm goes. Those are your target areas. Title: Re: timing correction after log during WOT Post by: Blazius on February 13, 2019, 10:31:07 AM Its generally known that rods will hold 400 nm(AEB) with a bigger late spoooling turbo with max 13-15 degrees of advance in high load , with a smaller turbo and agrresive tune you are risking it. Get a set of maxspeedrods for 250 bucks and you are set. until 400 hpish when you gotta look at your exh valves , sodium filled is cool but once you go over the breaking point its no good.
AFAIK, if you got the setup for it , you can advance timing until you get -3 deg max retard by knock or so , correct me if that is wrong. Title: Re: timing correction after log during WOT Post by: pieros_net on February 13, 2019, 10:56:47 AM Max load 191.7 I reach between 3500 to 5000
I will set 3 or 4 point advance here? And on the high rpm? I will keep also this 3-4 point advance or I have to keep stock? On the low rpm/ load I will leave stock Title: Re: timing correction after log during WOT Post by: Blazius on February 13, 2019, 11:06:08 AM Max load 191.7 I reach between 3500 to 5000 I will set 3 or 4 point advance here? And on the high rpm? I will keep also this 3-4 point advance or I have to keep stock? On the low rpm/ load I will leave stock Is this a stock kfzw map or a 0'd one ? Looks very diff than others. Title: Re: timing correction after log during WOT Post by: pieros_net on February 13, 2019, 11:13:52 AM Is this a stock kfzw map or a 0'd one ? Looks very diff than others. The values you are looking on my post are the difference between ORI values and modifiedTitle: Re: timing correction after log during WOT Post by: woj on February 13, 2019, 11:55:17 AM There isn't much point in increasing timing in part throttle/low load areas Wouldn't it make a tiny bit of fuel saving due to better efficiency? Title: Re: timing correction after log during WOT Post by: pieros_net on February 15, 2019, 06:22:43 AM Hi guys,
I just made a log during WOT of 4 gear. 1) actual AFR during WOT was between 0,85 -0,90 2) KFZW, KFZW2 were at stock values Attached can you see the log by VCDS (I know, soon I will use M7logger for accurate log), the timing corrections are to much High. my strategy to correct them is: 1- increase fuel to lambda 0,8 by LAMFA 2- retard the ignition timiming by KFZW, KFZW2 of -3 degree on the areas where I found a retard. do you have any suggestion? by adding fuel I will be able to correct some retard? thank you to every body for your support. Title: Re: timing correction after log during WOT Post by: aef on February 15, 2019, 06:42:09 AM Is this a stock KFZW/KFZW2 and you did substract -3 form stock file?
retard starts at lower rpm so reduce timing in this area dont create new thread every time. Hard to follow what you changed from thread to thread and file to file. I also dont know what engine/ecu and so on importand: stop sending personal messages to point me to your threads Title: Re: timing correction after log during WOT Post by: pieros_net on February 15, 2019, 06:45:49 AM Is this a stock KFZW/KFZW2 and you did substract -3 form stock file? Sorry for my beavhior!retard starts at lower rpm so reduce timing in this area dont create new thread every time. Hard to follow what you changed from thread to thread and file to file. I also dont know what engine/ecu and so on importand: stop sending personal messages to point me to your threads About a new topic I’m not so practice with the forum. I don’t now correct rule. Sorry again Thank you for your suggestion Title: Re: timing correction after log during WOT Post by: Blazius on February 15, 2019, 07:38:45 AM Yes, it was unneccesary to make a new thread, and I asked this in your last post and didnt understand your reply but now i do i guess, you set it up so it shows the difference between the modified value and the stock value right? IMO it would be better if you reverted it to default to show the actual timing values instead of the difference.
Also show the actual timing angle value and the retard groups in the logs. Title: Re: timing correction after log during WOT Post by: nyet on February 15, 2019, 09:34:56 AM Also, get ME7L working.
Title: Re: timing correction after log during WOT Post by: dal on February 15, 2019, 11:02:34 AM I need to get this working for my car URGENT.
Title: Re: timing correction after log during WOT Post by: Blazius on February 15, 2019, 05:49:58 PM I need to get this working for my car URGENT. wot Title: Re: timing correction after log during WOT Post by: pieros_net on February 17, 2019, 11:33:52 AM Hi guys,
just an update about my problem. I decrease the retard to around 2-3 degree at just one or two cyclinders only by: 1) a few additional fuel, i'm right now around lambda 0,8 between 160% to 191% load 2) using of 100 octane fuel thank you every body! Title: Re: timing correction after log during WOT Post by: Blazius on February 17, 2019, 01:47:49 PM Hi guys, just an update about my problem. I decrease the retard to around 2-3 degree at just one or two cyclinders only by: 1) a few additional fuel, i'm right now around lambda 0,8 between 160% to 191% load 2) using of 100 octane fuel thank you every body! :) Title: Re: timing correction after log during WOT Post by: nyet on February 17, 2019, 04:40:32 PM 2) using of 100 octane fuel If you plan on always using race gas, you will need to retune timing entirely. If you plan on only using race gas sometimes, you should not tune for pump gas with race gas. Really really terrible idea. Title: Re: timing correction after log during WOT Post by: pieros_net on February 18, 2019, 02:25:34 AM If you plan on always using race gas, you will need to retune timing entirely. why I have to retune timing if right now with stock values map and 100 octane fuel I just get down the retard near to 0?Quote If you plan on only using race gas sometimes, you should not tune for pump gas with race gas. Really really terrible idea. I'm fully agree with you! sure I will use everytime 100 oct fuel, in case I must review direct the timing map |