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Title: Hard Cut Rev limiter on Med9.1 Post by: teobolo on September 26, 2016, 01:16:42 PM Hi I`m looking for info about how i can enable hard cut revlimiter on med9.1 ecu's
According to the MED9.1 (Funktionsrahmen ) to activate hard cut it needs to set B_nmxozwe= 0 (1 : Only fuel cut intervention & 0 : Ignition and fuel cut intervention) I have also manage to try a file from a Golf 6 R that has hard cut revlimiter enabled, it is exactly what i need...I tried to use the same values for revlimits and ignition tables to an Audi S3 cdl 2.0tfsi but not with success i know i`m missing something but this what i`m looking for ..... So any kind of info about it are welcomed... Regards! Title: Re: Hard Cut Rev limiter on Med9.1 Post by: IamwhoIam on September 26, 2016, 02:21:13 PM Maybe you should try to make it yourself rather than try and copy what someone did himself, then you'll understand what you're missing.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on September 26, 2016, 11:02:52 PM Maybe you should try to make it yourself rather than try and copy what someone did himself, then you'll understand what you're missing. This is why i open this topic to find out what it needs to make it on my own....So any chance to give any info about it ? Title: Re: Hard Cut Rev limiter on Med9.1 Post by: IamwhoIam on September 27, 2016, 08:59:08 AM I was the first one to figure that out back in 2008, not sure anyone else had done it before, but I know it took me 15 loooooong flashes to get it 100% right. Have fun.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on September 27, 2016, 09:45:28 AM How did you do it?
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: IamwhoIam on September 28, 2016, 02:11:37 AM I just read and reread and rereread the FR until I had an idea of what/where then it was trial and error. fifteen 14-18 minute flashes and tests. Nowadays everyone wants everything served to them on a silver platter and all done in one flash.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on September 28, 2016, 02:12:57 AM 15? I did it in 1. One axis change and one column change.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on September 28, 2016, 02:16:53 AM I just read and reread and rereread the FR until I had an idea of what/where then it was trial and error. fifteen 14-18 minute flashes and tests. Nowadays everyone wants everything served to them on a silver platter and all done in one flash. You've added absolutely zero value to the thread other than a chance to willy wave. "Look at me, I've done it". Not even a hint as to how. If everyone operated like that on this forum, it would be a pretty dead site. The cynical side of me thinks you're talking shit and haven't done it. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: IamwhoIam on September 28, 2016, 02:17:47 AM You've added absolutely zero value to the thread other than a chance to willy wave. "Look at me, I've done it". Not even a hint as to how. If everyone operated like that on this forum, it would be a pretty dead site. The cynical side of me thinks you're talking shit and haven't done it. LOL think whatever you want. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on September 28, 2016, 02:33:10 AM That's basically where I was going with that. It's not a big change anyway.
Dwell time to zero at nmax, shift column before to -50rpm nmax. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: IamwhoIam on September 28, 2016, 02:34:33 AM There's a few different ways to do it at last. Mine requires a few more changes than that but hey thanks for serving the OP his answer on a silver platter
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on September 28, 2016, 05:00:42 AM That's basically where I was going with that. It's not a big change anyway. Dwell time to zero at nmax, shift column before to -50rpm nmax. Thanks for giving a starting point... i will test ad report ! Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on September 28, 2016, 05:02:54 AM There's a few different ways to do it at last. Mine requires a few more changes than that but hey thanks for serving the OP his answer on a silver platter Doesn't encroach on your super secret squirrel research, so feel free to job on Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on September 28, 2016, 05:03:34 AM We're here to learn, aren't we? So now we've disclosed how I do it, how do you do it?
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: vwaudiguy on September 28, 2016, 09:41:44 AM We're here to learn, aren't we? So now we've disclosed how I do it, how do you do it? :D Title: Re: Hard Cut Rev limiter on Med9.1 Post by: multitek on February 19, 2018, 01:36:19 PM That's basically where I was going with that. It's not a big change anyway. Dwell time to zero at nmax, shift column before to -50rpm nmax. this will work also with dsg ?? Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on February 20, 2018, 04:54:56 AM You tell me.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gt-innovation on February 20, 2018, 06:11:18 AM this will work also with dsg ?? You need to allow the dsg to hit the rev limiter on Manual mode otherwise it will never work as the dsg needs to shift gears before the actual ecu rev limiter which is the hardcut in your case. I would suggest to read how things work on a dsg before you demand something that will be useless in most cases. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: IamwhoIam on February 20, 2018, 07:56:37 AM I would suggest to read how things work on a dsg before you demand something that will be useless in most cases. very nicely said! Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Kacza on February 25, 2018, 08:29:38 AM Dwell time to zero at nmax, shift column before to -50rpm nmax. My English is very poor. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: HelperD on February 25, 2018, 08:52:25 AM What maps do you mean? My English is very poor. KFTSRL Christian Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on March 01, 2018, 05:26:37 AM i also zero FUBAOFF in combination with KFTSRL
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Kacza on March 01, 2018, 01:32:17 PM What is this FUBAOFF?
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gt-innovation on March 02, 2018, 02:53:36 AM Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Kacza on March 02, 2018, 05:06:36 AM Does someone have a movie how does it work?
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: luketdi on March 03, 2018, 11:22:53 AM FUBAOF set to 0
KFTSRL set like image if you want Revlimit @7200rpm Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on March 03, 2018, 08:37:46 PM FUBAOF set to 0 KFTSRL set like image if you want Revlimit @7200rpm That's bloody stupid. Between 5000 and 7200rpm, the ECU will be interpolating the values at those two sites. As a result, the dwell time will gradually start to decrease on the way to 7200rpm. You'll be very lucky if you get to 7200 as it'll be misfiring its head in long before that as the coil charges less and less. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: luketdi on March 04, 2018, 09:49:19 AM That's bloody stupid. Between 5000 and 7200rpm, the ECU will be interpolating the values at those two sites. As a result, the dwell time will gradually start to decrease on the way to 7200rpm. You'll be very lucky if you get to 7200 as it'll be misfiring its head in long before that as the coil charges less and less. In this case? Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on March 04, 2018, 01:15:47 PM In this case? Yes, much better. Although I'd run a window yet. 40-80rpm tops Title: Re: Hard Cut Rev limiter on Med9.1 Post by: luketdi on March 04, 2018, 01:41:30 PM Yes, much better. Although I'd run a window yet. 40-80rpm tops We can put revlimiter @ 7100rpm and replace last 7200 column to 7100. in this case we have only 100rpm gap Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on March 05, 2018, 01:02:08 AM make the gap as closer as possible in order to be faster ignition cut i set it at 40rpm differnce.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on March 05, 2018, 03:13:18 AM As above. Think about what the ECU does to get the values in between. You don't want ANY effect on the other "normal" values.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: birchbark506 on July 28, 2018, 06:32:24 AM are these the only two maps that are touched for hard cut?
KFTSRL FUBAOF Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on August 04, 2018, 09:16:02 AM are these the only two maps that are touched for hard cut? yesKFTSRL FUBAOF Title: Re: Hard Cut Rev limiter on Med9.1 Post by: birchbark506 on August 05, 2018, 07:07:56 AM How do you test to see if it takes? Also what's the best to set to?
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on August 05, 2018, 12:05:39 PM How do you test to see if it takes? Also what's the best to set to? I test it by letting the car hiting revlimiter ..... I set it as described in previous posts Title: Re: Hard Cut Rev limiter on Med9.1 Post by: birchbark506 on August 16, 2018, 03:42:50 PM i edit them two maps the first time i only allowed it to go to to 6500 rpm it worked fine now that i put it to 7000 it dosen't seem to work now what am i doing wrong now that its set to 7000 rpm
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: NBR on August 17, 2018, 02:35:34 AM It's because your difference between the 2 columns is too big. When you set it at 6500rpm, your last 2 columns would have been 6480 and 6500. now the last 2 columns in your picture are 6480 and 7000. change the 2nd last column from 6480 to 6980.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: birchbark506 on August 17, 2018, 11:51:24 AM Okay, I will try that tonight, thank you.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: mickey51 on December 09, 2018, 01:18:18 PM hi guys thanks for this thread, here is my modification, it is good thanks a lot and have a good day
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: teobolo on December 11, 2018, 05:09:46 AM I would make the rpm gap even smaller 7000 & 7040 and i also zero values from load 80% and higher
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Garfimp on April 10, 2019, 01:02:18 AM Hey guys !
Thanks for the information shared here, very interesting. Just to confirm my understanding, the last column of KFTSRL has to be set to exactly the rev limiter ? Or let’s say can be < or = to nmax ? But not > right ? For instance, on my car with stock software, the rev limiter is set to 6800 rpm in every “nmax related” singles. So if I want to add hard cut on my stock rev limiter, in KFTSRL I need to set the last column to exactly 6800 rpm and column before that to something like 6760 ? Or should I add a few 30-40 rpm more and set last column to 6840rpm and column before to something like 6800rpm ? Thanks :) Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Khendal on April 10, 2019, 01:33:15 AM One question... which are the benefits of an hard cut rev limiter? Why does anyone could need it ?
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: nyet on April 10, 2019, 01:51:28 AM One question... which are the benefits of an hard cut rev limiter? Why does anyone could need it ? Because audizine Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on April 10, 2019, 02:22:32 AM Noise, flames, impress your mates.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Garfimp on April 12, 2019, 01:37:00 AM Noise, flames, impress your mates. So true.. ;D Can anyone answer my question above ? :) Thanks Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on April 12, 2019, 07:00:35 AM Just to confirm my understanding, the last column of KFTSRL has to be set to exactly the rev limiter ? Or let’s say can be < or = to nmax ? But not > right ? For instance, on my car with stock software, the rev limiter is set to 6800 rpm in every “nmax related” singles. So if I want to add hard cut on my stock rev limiter, in KFTSRL I need to set the last column to exactly 6800 rpm and column before that to something like 6760 ? Or should I add a few 30-40 rpm more and set last column to 6840rpm and column before to something like 6800rpm ? Think about what you're trying to accomplish. What will the rev limiter do if you set it to 5000? Do you think you will reach a 0 dwell time if you set the dwell axis at 6800 with engine speed limit of 5000? Will the engine speed ever get to 6800 if you set a limiter at 5000? Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Garfimp on April 15, 2019, 05:38:21 AM Think about what you're trying to accomplish. What will the rev limiter do if you set it to 5000? Do you think you will reach a 0 dwell time if you set the dwell axis at 6800 with engine speed limit of 5000? Will the engine speed ever get to 6800 if you set a limiter at 5000? Hey adam, Thanks for the insight, I agree, of course if I set a hard cut rev at 6800 and have set my rev limiter in other singles at 5000 there is no use, I won't reach it. But the question was more the other way around and for small gap. But maybe first as you point out I should be sure I understood what physically means a hard rev cut... :) So what I think is intended to do in a hard cut rev limiter is to cut the fuel at a certain rpm, so then rpm will a little drop beacause engine is cut, but if you keep pushing on throttle then it will go back up to the rpm where fuel is cut, and then go a little back dropping and then back up etc etc so it will make "rotototo" ;D But my question is more for let's say a very short "gap" between the rev limiter defined in Nmax singles and the one we should put here in last column of KFTSRL, 50 rpm above or below for instance... So if I have set my rev limiter to 6800 in the other singles of the tune (stock value), in KFTSRL if I put 6840rpm in last column and 6800 in column before maybe the car can still reach this 6840 rpm even if it is slightly above the rev limiter of 6800 ? Or it really will never reach any value above the rev limiter set to 6800 in stock software ? meaning it is really reactive then ? My instinct would be that the best way is to set last column of KFTSRL to exactly the rev limiter of 6800 and column before to a value really close and below like 6760 rpm in my case to be sure to reach that and have the "cut" happen Title: Re: Hard Cut Rev limiter on Med9.1 Post by: adam- on April 15, 2019, 06:09:06 AM If you have a limiter set at an RPM < a dwell time of 0 RPM, you will never cut ignition.
Set dwell to 0 where you want your RPM actually cut, and set your fuel cut limiter 100/150/200 RPM above. Fuck this 50rpm shit. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Garfimp on April 15, 2019, 06:44:03 AM If you have a limiter set at an RPM < a dwell time of 0 RPM, you will never cut ignition. Set dwell to 0 where you want your RPM actually cut, and set your fuel cut limiter 100/150/200 RPM above. Fuck this 50rpm shit. Ok thanks adam, so just to be sure we are aligned, what I want is to cut spark before I cut fuel right ? So in KFTSRL I can cut spark at 7100 for instance (2 last rows would be 7060 and 7100 for instance) and then I can set fuel cut in Nmax singles at 7200 rpm? Or another example, if i take this image which was posted before : (http://nefariousmotorsports.com/forum/index.php?action=dlattach;topic=11476.0;attach=28199;image) I should have Nmax (fuel cut) set to a value >7080rpm ? let's say something around 7200 rpm in the singles Nmax? Because you said in an old message on this thread : That's basically where I was going with that. It's not a big change anyway. Dwell time to zero at nmax, shift column before to -50rpm nmax. So I thought fuel cut set by nmax should be = rpm spark cut set in KFTSRL ? Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Garfimp on May 09, 2019, 06:24:21 AM Ok thanks adam, so just to be sure we are aligned, what I want is to cut spark before I cut fuel right ? So in KFTSRL I can cut spark at 7100 for instance (2 last rows would be 7060 and 7100 for instance) and then I can set fuel cut in Nmax singles at 7200 rpm? Or another example, if i take this image which was posted before : (http://nefariousmotorsports.com/forum/index.php?action=dlattach;topic=11476.0;attach=28199;image) I should have Nmax (fuel cut) set to a value >7080rpm ? let's say something around 7200 rpm in the singles Nmax? Because you said in an old message on this thread : So I thought fuel cut set by nmax should be = rpm spark cut set in KFTSRL ? Up guys ? :) Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on May 11, 2019, 04:57:48 AM NMAX isn't straight fuel cut. There's a torque reduction process that is employed just prior to the hard limit which softens the effect of hard cut. That needs to be numbed to have proper fuel cut, otherwise just set all the NMAX limiters to a value above your greatest dwell RPM column. Be advised, spark cut is brutal on the engine and transmission.
Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Roader55 on April 07, 2020, 02:39:23 PM That's basically where I was going with that. It's not a big change anyway. what is the map name?Dwell time to zero at nmax, shift column before to -50rpm nmax. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: bamofo on April 09, 2020, 06:05:40 AM what is the map name? Its two tables Offenzeit fur funkenbandzundung & Schliebzeitkennfeld Its in post 6... FUBAOF set to 0 KFTSRL set like image if you want Revlimit @7200rpm Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Albertoak on April 09, 2020, 01:44:38 PM Its two tables Offenzeit fur funkenbandzundung & Schliebzeitkennfeld Its in post 6... FUBAOF set to 0 KFTSRL set like image if you want Revlimit @7200rpm I still do not understand why put FUBAOF at 0 .... It is not necessary ... Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Albertoak on April 14, 2020, 05:06:16 AM FR:
"Basically, spark band ignition shows the desired effect when the secondary ignition is within of the smallest possible angular range. The optimal distance would be about 1 degree. For this purpose, the open time FUBAOF must be chosen correspondingly small for the common coil ignition systems. This can, however, lead to deterioration as some engines require the full spark duration. Usual values for a spark burning duration in which no significant HC increase is noticed are included about 0.5ms. However, this value cannot be regarded as binding. The open time is in various projects in which spark band ignition is already used an order of magnitude in which the spark has long since swung out (2ms). The afterglow is only after completely reloaded the coil. In this case the ignition would normally be caused by the first Sparks are already too advanced to be supported by a second spark. Nevertheless, an improvement of the cold start at extremely low temperatures is noticed in these projects been. However, there is only an improvement if the first spark has not led to combustion and the mixture ratios on the candle at the time of the first sparking are such that this one Inflammation triggers." after reading FUBAOF in FR. I keep thinking that it is not a good idea ... if someone has a coherent explanation of why set to 0, let them say it. Because in this post everyone is setting it to 0. It is not necessary for the hardcut and it is not good. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: nyet on April 16, 2020, 09:49:44 AM Guys stop giving me unnecessary work.
Be constructive, work together, or don't post. I know I'm not the best role model here but you can all be better than me. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Albertoak on April 16, 2020, 12:17:44 PM Guys stop giving me unnecessary work. Be constructive, work together, or don't post. I know I'm not the best role model here but you can all be better than me. thanks for intervening. and I think like you. We are here to contribute and learn together. not to disrespect us .... greetings Title: Re: Hard Cut Rev limiter on Med9.1 Post by: cedre on April 25, 2020, 01:43:55 AM Good morning all
very interesting topic I'm looking to confirm the maps KFTSRL: 1D97BC FUBAOF: 1C83FC could you confirm the addresses best regards Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on April 25, 2020, 06:14:51 AM Good morning all very interesting topic I'm looking to confirm the maps KFTSRL: 1D97BC FUBAOF: 1C83FC could you confirm the addresses best regards Of course you are. And with only 1 post, I bet you'll be back and contributing to the forum within minutes. Title: Re: Hard Cut Rev limiter on Med9.1 Post by: cedre on April 25, 2020, 08:17:21 AM thank you so much
I hope to be more often on the forum and contribute to the exchanges I have more control over diesel engine management. ;) Title: Re: Hard Cut Rev limiter on Med9.1 Post by: Tchips on August 23, 2020, 05:01:06 AM can anyone tell me the factors for rpm and load for KFTSRL
thank you Title: Re: Hard Cut Rev limiter on Med9.1 Post by: gman86 on September 06, 2020, 04:48:03 PM can anyone tell me the factors for rpm and load for KFTSRL thank you 0.75 for load, 40 for RPM Title: Re: Hard Cut Rev limiter on Med9.1 Post by: pukacinio on December 15, 2020, 02:47:07 PM I have done hardcut but now I'm looking for way to add some bangs during hard limiter maybe some flames like my friend have in his 1.8t. Can someone tell what is needed to do that and what ID that parameter has ? 8)
I will try this. http://nefariousmotorsports.com/forum/index.php?topic=11664.0 Title: Re: Hard Cut Rev limiter on Med9.1 Post by: olo_gt32 on October 05, 2022, 11:35:34 AM Hi all,
Tried this one on Leon with DSG and it's kind off working but... On P you have hardcut etc. but when you are going to drive and put full throttle issues are starting because it looks like DSG is accepting only original values of RPM in KFTSRL and when any changes are applied it's getting crazy and it cut's off on last original value of RPM on axis of RPM for example on 5880 (third row from right). Did someone maybe figure it out till now what to change more? Is it in ECU software or TCU needs to be remapped in this case also? Looking forward actually for some ideas on this one :) Title: Re: Hard Cut Rev limiter on Med9.1 Post by: fknbrkn on October 05, 2022, 12:40:45 PM Hi all, Tried this one on Leon with DSG and it's kind off working but... On P you have hardcut etc. but when you are going to drive and put full throttle issues are starting because it looks like DSG is accepting only original values of RPM in KFTSRL and when any changes are applied it's getting crazy and it cut's off on last original value of RPM on axis of RPM for example on 5880 (third row from right). Did someone maybe figure it out till now what to change more? Is it in ECU software or TCU needs to be remapped in this case also? Looking forward actually for some ideas on this one :) Its just because ignition cut rpms lower than dsg shifts.. seriously?.. |