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08-01-2022, 05:06 PM | #67 | |
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08-01-2022, 06:05 PM | #68 |
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Thought I'd share my experience here. I haven't had this issue once since disabling all my brake nannies. I've done 4 track days this year with all that stuff disabled. I hit the rev match issue frequently last year at nearly every event I went to which was about 15 days total.
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08-01-2022, 06:08 PM | #69 | |
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08-02-2022, 07:35 AM | #70 |
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Nice foot work Phloozy, painful to watch and not hear the throttle jump.
chris82 Do you have anything additional coded off besides what I posted in the beginning of this thread? I have the issue happen to me at every single track day with everything coded off.
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08-02-2022, 12:41 PM | #71 | |
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Found this post from several years ago in the E90 forums.
https://www.e90post.com/forums/showp...18&postcount=3 Quote:
Other thoughts, does resetting the throttle adaptations do anything on a manual transmission car? Are there coding settings for the throttle and is the 135/1M coded differently? Or is it definitely a brake/accelerator interlock buried somewhere in the DME?
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08-04-2022, 10:44 AM | #73 |
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I had a track night at Charlotte Motor Speedway last night, and I wanted to do something to see if I could troubleshoot this issue.
So I went in with ProTool and confirmed that all of my brake settings are coded off and then I attempted the gas pedal procedure to reset the throttle adaptation. I couldn't get that process to work at all so I ended up clearing my adaptations using ProTool. Short story, clearing the adaptations didn't do anything to help the heel-toe rev match issue. Coming into the chicane on the back straight I was still having to pump the throttle until the revs came up. There's been some speculation on the FB group that there are throttle settings that can be coded, I haven't found anything in ProTool/INPA yet to verify that. Would love to hear if anyone with a 135i has this issue because all of the 1 series (128, 135, and 1M) use the same throttle pedal assembly. If it is somehow related to the throttle pedal itself as some people on the FB group seem to imply.
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08-09-2022, 03:25 PM | #74 | |
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The only thing that has anything to do with pedal behavior is the DME software. |
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08-10-2022, 09:39 AM | #75 |
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Yeah, I appreciate you confirming that. I thought I was going crazy when people on the FB group started saying they just had to code a different setting on the throttle pedal, because I've never seen anything to support that idea.
I tried sending hassmaschine a PM but his inbox was full. I'm not sure of anyone who might know more about the MSV70/80 DME than him and would welcome his input on the topic.
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08-10-2022, 08:44 PM | #76 |
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yes the throttle delay tables are different and it can be changed on the 135i in tunerpro and even in MHD at the point of flash now they added it as a option
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08-17-2022, 08:08 AM | #77 |
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did you find a fix? I can check with my eastern European friends to see if they have a full damos for the n52. Full damos + docs should contain any code references that have throttle+brake safeties built in like new toyotas.....
I would need a copy of the bin file off the ecu to check
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08-17-2022, 09:20 AM | #78 | |
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I'm just a mechanical engineer so while I understand a lot of concepts, I have to wrap my head around everything related to the DME and try to figure it out. I've been doing a lot of reading, thank you for pointing me towards the damos and the other files. I've been researching but haven't changed anything yet. If you have a source for the N52 damos that would be incredible, I have found others but not for the N52. That would be really helpful in learning and figuring this out. I'd definitely be willing to get you the bin file.
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08-17-2022, 09:30 AM | #79 | |
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08-26-2022, 09:04 PM | #80 | |
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Last edited by bbnks2; 08-26-2022 at 09:18 PM.. |
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08-27-2022, 08:18 AM | #81 |
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I suppose so, in everything I've read "coding" seems pretty specific to just settings changes within the modules. Do people nowadays commonly interchange "coding" with "tuning"? You'll have to forgive me for not understanding when the solution presented to me was to simply "code" the throttle pedal.
It just comes down to some of us having the issue with the 128i and people with N54s having so much more tuneability since there has been more interest and work put in to understand the stock DME. I guess the guys on fb weren't really aware that just flashing the 1M throttle sensitivity tables isn't something readily available to try on the MSV80.
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08-27-2022, 11:46 PM | #82 | |
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"some" people having the issue is probably due to purely the driving habits and/or awareness. It's probably happening to them they just don't even know it. Or their footwork is slow enough the don't experience the lag. No, it's not something readily available to flash on different DME but it gives hope someone with the knowledge and time will find the tables for other chassis. I wouldn't hold your breath though. There is also "shift bog" torque limiters which were fixed for N54.... it has not been done for any other chassis that I am aware of. Shift too fast and the car throws a 2048 limiter and the next gear bogs for a couple hundred rpm. I am sure N52 has it too. On the N55 I has always since day 1 noticed a lag in the pedal input. I hoped a SMFW conversion would help by dropping weight. While rpms do shoot up faster with less mass... that initial pedal input lag is still there. You need to almost hold the pedal down for .5 seconds when rev matching before the rpms respond. |
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09-22-2022, 01:33 PM | #83 |
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I made a compilation video from the event yesterday to show it only happening under hard braking. It is beyond frustrating with people thinking its not an issue. I really need to solve this! As you can see the car get squirrely with the "clutch kick" from not being able to rev match.
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09-22-2022, 03:12 PM | #84 |
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No luck with the tune from Epic?
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09-30-2022, 03:49 PM | #86 |
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I'm having the same thing happen at hard brakes zones, it's super unnerving experiencing the clutch kick. We're not crazy!
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10-21-2022, 12:11 AM | #87 |
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I just realized that this might be the same issue that I have experienced in drifting. It does it pretty inconsistently and only on my first initiation, never after I'm already drifting. When I try to clutch kick sometimes the throttle does nothing as you can see at the beginning of the video. I know most drift guys disable their abs for drift but not sure if it's to avoid this.
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10-21-2022, 02:30 PM | #88 |
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Cmon guys. Just brake less. That's where the lap time is anyways!
On a serious note, that's disappointing to hear no solution for this has been found in the past year. StageFP wasn't able to come up with a solution? I'd hold out on Randy from EPIC. If anyone can solve it, it's probably him. |
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