Rough Logs on bm3 Multimap Stage 2 Tune. Requesting Insight

TheHaze · 06-15-2023, 05:15 PM

CalAcacian · 06-16-2023, 01:50 PM

Has anyone looked at your plugs recently? That is a hell of a lot of timing correction on 91 ACN (which you shouldn't have any real correction with running 93, and especially 93 with ethanol added).

TheHaze · 06-16-2023, 04:29 PM

Quote:

Originally Posted by CalAcacian

Has anyone looked at your plugs recently? That is a hell of a lot of timing correction on 91 ACN (which you shouldn't have any real correction with running 93, and especially 93 with ethanol added).

I have not looked at the plugs personally, but they were replaced by BMW during the final free service 2 years/8k miles ago. Agreed on the excessive timing corrections. I feel like there is some other issue besides octane if I can't get consistent clean logs running 93 + E on a 91 ACN map. I think I'm going to flash back to stock and get some logs with this current tank of gas to see how it compares.

TheHaze · 06-17-2023, 02:42 PM

Bump. I flashed back to stock and put logs at the bottom of the OP. Added misfire counter channels and am seeing a little bit of activity on them as well as one knock event, but overall timing is looking a lot better on the stock tune than it did on the OTS.

AmuroRay · 06-19-2023, 07:15 PM

Quote:

Originally Posted by TheHaze

I have not looked at the plugs personally, but they were replaced by BMW during the final free service 2 years/8k miles ago. Agreed on the excessive timing corrections. I feel like there is some other issue besides octane if I can't get consistent clean logs running 93 + E on a 91 ACN map. I think I'm going to flash back to stock and get some logs with this current tank of gas to see how it compares.

What about the coil packs? I had a lot of correction on my coil packs - they don't always throw a code when they fail either.

ZM2 · 06-19-2023, 08:10 PM

Yeah, always start with plugs (stock & stock gap) & coils. Then see how the logs look.

Especially when a lot of other folks run the same map without issues.

TheHaze · 06-19-2023, 09:41 PM

AmuroRay ZM2 thanks for taking a look guys. I'm willing to try just about anything at this point. I've been chasing this issue for awhile now and just want to spend less time looking at logs and more time enjoying the car.

I'll order a new set of plugs/coils and see if that helps. Do either of you know if there is any real difference between the genuine BMW, Delphi, and Bosch coils? I read the non-genuine spark plugs are questionable so I'll stick to the BMW ones for that.

AmuroRay · 06-19-2023, 10:05 PM

Stick with OEM plugs, but for coils you can go with slightly “upgraded” Eldor branded coils.

The correct P/N for these is 12138616153 - they are the more powerful S55 version, and not the 10yo E46 Version.

https://euroklasse.com/products/bmw-...39496276508855

TheHaze · 06-28-2023, 03:55 PM

I swapped out the plugs/coils last weekend and got a few more logs. Halim sent over a different tune with less ignition timing to try out so all logs are on that. They are at the bottom of my original post. Timing is still inconsistent and the old spark plugs looked pretty good so it doesn't seem like the new parts helped much. I'm running out of ideas on what else to try.

AmuroRay · 06-28-2023, 04:24 PM

Quote:

Originally Posted by TheHaze

I swapped out the plugs/coils last weekend and got a few more logs. Halim sent over a different tune with less ignition timing to try out so all logs are on that. They are at the bottom of my original post. Timing is still inconsistent and the old spark plugs looked pretty good so it doesn't seem like the new parts helped much. I'm running out of ideas on what else to try.

Did you try clearing your adaptations?

TheHaze · 06-28-2023, 05:03 PM

Quote:

Originally Posted by AmuroRay

Did you try clearing your adaptations?

I have not tried resetting adaptations. For some reason I thought that happened automatically when flashing a tune, is that not the case? Either way I can give it a shot. Do you think I should reset everything or just certain ones?

AmuroRay · 06-28-2023, 05:09 PM

Quote:

Originally Posted by TheHaze

I have not tried resetting adaptations. For some reason I thought that happened automatically when flashing a tune, is that not the case? Either way I can give it a shot. Do you think I should reset everything or just certain ones?

I personally pick and choose - Can you screenshot what options you have for doing so? Also, have you cleaned the MAF?

TheHaze · 06-28-2023, 05:58 PM

Quote:

Originally Posted by AmuroRay

I personally pick and choose - Can you screenshot what options you have for doing so? Also, have you cleaned the MAF?

I haven't tried cleaning the MAF/MAP sensors yet.

Name: Adaptations.jpg
Views: 250
Size: 441.2 KB

AmuroRay · 06-28-2023, 07:07 PM

As I suspected, BM3 does have more options:

I would select Lambda, MAF (after you clean it and your air filter - faulty MAF can lead to some timing corrections) and octane. I’m not telling you to do it, but you could even consider knock control as well. And if idle is choppy-: that as well. I did it, MAF, and Fuel trims reset when I installed my intake and again after my reflash. Perfect idle, perfect LTFTs and nearly perfect timing on 93.

https://datazap.me/u/amuroray/milvs-3rd-and-4th

TheHaze · 06-28-2023, 07:37 PM

Quote:

Originally Posted by AmuroRay

As I suspected, BM3 does have more options:

I would select Lambda, MAF (after you clean it and your air filter - faulty MAF can lead to some timing corrections) and octane. I’m not telling you to do it, but you could even consider knock control as well. And if idle is choppy-: that as well. I did it, MAF, and Fuel trims reset when I installed my intake and again after my reflash. Perfect idle, perfect LTFTs and nearly perfect timing on 93.

https://datazap.me/u/amuroray/milvs-3rd-and-4th

Thanks for the ideas Ray! I'll try all of this and report back once I get some more logs.

ThreeStripes · 06-29-2023, 06:30 AM

Thanks for documenting your experience. Keep us updated.

AmuroRay · 06-30-2023, 02:30 PM

Any update op?

TheHaze · 06-30-2023, 04:43 PM

I didn't get a chance to try anything else with the car yet. I'm hoping to get this done and tested by early next week, and I'll make sure to update this post when I do.

TheHaze · 07-05-2023, 05:11 PM

Alright, more logs are at the bottom of the original post. I cleaned the MAF sensor and air filter, but left the 2 MAP sensors alone for now as they're a bit harder to access. I also reset the following adaptations per the list above:

- lambda control
- intake manifold
- lambda sensors
- idle
- octane

I'm not sure if any of this helped at all but timing still isn't where I would like it to be. Weather temp was very hot today so IATs were a bit higher than normal too.

AmuroRay · 07-05-2023, 05:54 PM

Honestly, those logs look a LOT cleaner than before. Minor corrections on cyl 3 and sometimes 2 - but for the most part they look fine. Corrections are normal, you can try to clean it up by adding octane booster or E85.

Are you using "top tier" gasoline? I've heard, anecdotally, that it helps as well. Also, those super high IATs on some are going to cause timing to be corrected.

TheHaze · 07-05-2023, 08:37 PM

Quote:

Originally Posted by AmuroRay

Honestly, those logs look a LOT cleaner than before. Minor corrections on cyl 3 and sometimes 2 - but for the most part they look fine. Corrections are normal, you can try to clean it up by adding octane booster or E85.

Are you using "top tier" gasoline? I've heard, anecdotally, that it helps as well. Also, those super high IATs on some are going to cause timing to be corrected.

Thanks for taking a look. Yeah I always fill up at gas stations that should be better quality (Sunoco, BP, Shell).

I agree that these logs are looking a bit better than some of the previous ones. There were still instances where timing was being pulled over 5 degrees, but thankfully it was only in 1 cylinder and not across the board like some of the older logs. This test map's timing target is only half of what it is on the regular OTS, though. I'd like to be able to run the normal map, but I don't think my logs are going to look any better with even more timing advance.

AmuroRay · 07-05-2023, 09:39 PM

Quote:

Originally Posted by TheHaze

Thanks for taking a look. Yeah I always fill up at gas stations that should be better quality (Sunoco, BP, Shell).

I agree that these logs are looking a bit better than some of the previous ones. There were still instances where timing was being pulled over 5 degrees, but thankfully it was only in 1 cylinder and not across the board like some of the older logs. This test map's timing target is only half of what it is on the regular OTS, though. I'd like to be able to run the normal map, but I don't think my logs are going to look any better with even more timing advance.

I would pull plugs 1-2-3 check the gap and reinstall - try even switching them around. Then give it another go.
A lot of people supplement the octane with a splash of E85, you could try that.

06-15-2023, 05:15 PM	#1
TheHaze Second Lieutenant 152 Rep 211 Posts Drives: '18 M2 Join Date: Jul 2018 Location: PA iTrader: (0)	Rough Logs on bm3 Multimap Stage 2 Tune. Requesting Insight Hello all. I've been data-logging and going back and forth with Halim at bm3 on and off for the past several months trying to get my car dialed in. Logs on the stock tune are so-so, but they've been pretty bad on the OTS maps. I'm running 93 octane fuel using multimap stage 2 map slot 1 (91 ACN) and seeing lots of timing corrections and knock occasionally. Over the past couple days, I tried adding 2 gallons of ethanol and then limiting boost to 15 psi per Halim's request but logs are still looking rough. FYI the gas station I got the ethanol from said E content is between 51-83%. I was hoping some of you guys could chime in if you have any ideas as to what the issue is here. I'll leave my mod list and some logs below. Logs are in chronological order. Thanks! Mods - HJS 300 cell downpipe - CSF intercooler - FTP charge/boost pipes - MST V2 inlet - GFB DV+ - bm3 - Dorch Stage 1 HPFP Stock (OEM HPFP) https://www.bootmod3.net/log?id=6472...729bf6613be8cf https://www.bootmod3.net/log?id=6475...729bf942d79fec https://www.bootmod3.net/log?id=647c...729b3e18a3a8d5 https://www.bootmod3.net/log?id=647c...729b3e18a3a9be MultiMap Stage 2 slot 1 (91 ACN) https://www.bootmod3.net/log?id=6486...729bdef1a17a3c (knock) https://www.bootmod3.net/log?id=6486...90c628e312468c (knock) https://www.bootmod3.net/log?id=648a...90c62519f62883 MultiMap Stage 2 slot 1 (91 ACN) + 2 gallons ethanol https://www.bootmod3.net/log?id=648a...729bdbf9d562c9 https://www.bootmod3.net/log?id=648a...729bdbf9d562cd (knock) MultiMap Stage 2 slot 1 (91 ACN) + 2 gal ethanol, 15 psi limit (same tank of gas) https://www.bootmod3.net/log?id=648b...0b43cb86d89a0c https://www.bootmod3.net/log?id=648b...0b43cb86d89a30 https://www.bootmod3.net/log?id=648b...729bdef1a18f19 (knock) https://www.bootmod3.net/log?id=648b...90c628e3126012 Stock + 2 gal ethanol (same tank of gas) https://www.bootmod3.net/log?id=648d...0b435779e78f7c https://www.bootmod3.net/log?id=648d...90c6560574f0ad https://www.bootmod3.net/log?id=648d...729b389362620f https://www.bootmod3.net/log?id=648d...90c6560574f0b0 https://www.bootmod3.net/log?id=648d...90c65999748110 (knock) https://www.bootmod3.net/log?id=648d...90c6560574f0be https://www.bootmod3.net/log?id=648e...729b389362624d MultiMap Stage 2 slot 1 (91 ACN) + 2 gal ethanol, 15 psi limit (same tank of gas) https://www.bootmod3.net/log?id=6490...729b3b9672015e https://www.bootmod3.net/log?id=6490...729b3b9672016d (knock) https://www.bootmod3.net/log?id=6490...90c6560574fde7 https://www.bootmod3.net/log?id=6490...0b4353cb7cce38 https://www.bootmod3.net/log?id=6490...729b3893627007 https://www.bootmod3.net/log?id=6490...90c6560574fe06 MultiMap Stage 2 less ignition slot 1 (91 ACN)(new plugs/coils) https://www.bootmod3.net/log?id=6498...90c69d5e690ddb https://www.bootmod3.net/log?id=6498...729ba4e64c3559 https://www.bootmod3.net/log?id=6498...0b43e9e1f92609 https://www.bootmod3.net/log?id=6498...729ba4e64c3561 (map slot 2 - 91) https://www.bootmod3.net/log?id=6498...0b43e9e1f92610 (map slot 2 - 91) https://www.bootmod3.net/log?id=6498...729ba228e408af (map slot 2 - 91)(knock) https://www.bootmod3.net/log?id=6498...0b43e9e1f92619 MultiMap Stage 2 less ignition slot 1 (91 ACN)(reset adaptations, cleaned MAF sensor) https://www.bootmod3.net/log?id=64a5...0b433d6b4469d8 https://www.bootmod3.net/log?id=64a5...0b433d6b4469df (knock) https://www.bootmod3.net/log?id=64a5...90c6a8c522ebdf https://www.bootmod3.net/log?id=64a5...90c6ac5f71ca2a https://www.bootmod3.net/log?id=64a5...0b4340c7c130a2 (knock) https://www.bootmod3.net/log?id=64a5...90c6a8c522ec25 https://www.bootmod3.net/log?id=64a5...729bc2a07a6948 https://www.bootmod3.net/log?id=64a5...0b4340c7c130a6 MultiMap Stage 2 less ignition slot 1 (91 ACN) + 2 gal ethanol https://www.bootmod3.net/log?id=64ac...90c6c2cc6acf35 https://www.bootmod3.net/log?id=64ac...90c6c6619cb7fb https://www.bootmod3.net/log?id=64ac...90c6c2cc6acf40 https://www.bootmod3.net/log?id=64ac...729b2694efb5fc https://www.bootmod3.net/log?id=64ac...0b43ae02ef79aa (knock) Stock + 2 gal ethanol (same tank of gas) https://www.bootmod3.net/log?id=64ad...729b23a75d5c58 https://www.bootmod3.net/log?id=64ad...90c6c6619cbd2f https://www.bootmod3.net/log?id=64ad...90c6c6619cbd33 https://www.bootmod3.net/log?id=64ad...729b23a75d5c5d https://www.bootmod3.net/log?id=64ad...729b2694efbc85 https://www.bootmod3.net/log?id=64ad...90c6c6619cbd55 Last edited by TheHaze; 07-11-2023 at 10:21 PM.. Reason: added more logs
	Appreciate 0 Tweet Quote

06-16-2023, 01:50 PM	#2
CalAcacian Lieutenant 553 Rep 568 Posts Drives: 2018 M2 Join Date: Sep 2020 Location: Orange County, California iTrader: (0)	Has anyone looked at your plugs recently? That is a hell of a lot of timing correction on 91 ACN (which you shouldn't have any real correction with running 93, and especially 93 with ethanol added).
	Appreciate 0 Quote

06-17-2023, 02:42 PM	#4
TheHaze Second Lieutenant 152 Rep 211 Posts Drives: '18 M2 Join Date: Jul 2018 Location: PA iTrader: (0)	Bump. I flashed back to stock and put logs at the bottom of the OP. Added misfire counter channels and am seeing a little bit of activity on them as well as one knock event, but overall timing is looking a lot better on the stock tune than it did on the OTS.
	Appreciate 0 Quote

06-19-2023, 08:10 PM	#6
ZM2 Brigadier General 2828 Rep 3,703 Posts Drives: 2017 LBB M2 Join Date: Mar 2017 Location: Baltimore iTrader: (1)	Yeah, always start with plugs (stock & stock gap) & coils. Then see how the logs look. Especially when a lot of other folks run the same map without issues.
	Appreciate 2 TheHaze152.00 TUDMG21.00 Quote

06-19-2023, 09:41 PM	#7
TheHaze Second Lieutenant 152 Rep 211 Posts Drives: '18 M2 Join Date: Jul 2018 Location: PA iTrader: (0)	AmuroRay ZM2 thanks for taking a look guys. I'm willing to try just about anything at this point. I've been chasing this issue for awhile now and just want to spend less time looking at logs and more time enjoying the car. I'll order a new set of plugs/coils and see if that helps. Do either of you know if there is any real difference between the genuine BMW, Delphi, and Bosch coils? I read the non-genuine spark plugs are questionable so I'll stick to the BMW ones for that.
	Appreciate 0 Quote

06-19-2023, 10:05 PM	#8
AmuroRay Brigadier General 2315 Rep 4,173 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	Stick with OEM plugs, but for coils you can go with slightly “upgraded” Eldor branded coils. The correct P/N for these is 12138616153 - they are the more powerful S55 version, and not the 10yo E46 Version. https://euroklasse.com/products/bmw-...39496276508855 Last edited by AmuroRay; 06-20-2023 at 07:37 AM..
	Appreciate 1 TheHaze152.00 Quote

06-28-2023, 03:55 PM	#9
TheHaze Second Lieutenant 152 Rep 211 Posts Drives: '18 M2 Join Date: Jul 2018 Location: PA iTrader: (0)	I swapped out the plugs/coils last weekend and got a few more logs. Halim sent over a different tune with less ignition timing to try out so all logs are on that. They are at the bottom of my original post. Timing is still inconsistent and the old spark plugs looked pretty good so it doesn't seem like the new parts helped much. I'm running out of ideas on what else to try.
	Appreciate 0 Quote

06-28-2023, 07:07 PM	#14
AmuroRay Brigadier General 2315 Rep 4,173 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	As I suspected, BM3 does have more options: I would select Lambda, MAF (after you clean it and your air filter - faulty MAF can lead to some timing corrections) and octane. I’m not telling you to do it, but you could even consider knock control as well. And if idle is choppy-: that as well. I did it, MAF, and Fuel trims reset when I installed my intake and again after my reflash. Perfect idle, perfect LTFTs and nearly perfect timing on 93. https://datazap.me/u/amuroray/milvs-3rd-and-4th
	Appreciate 1 TheHaze152.00 Quote

06-29-2023, 06:30 AM	#16
ThreeStripes Lieutenant 726 Rep 579 Posts Drives: X3M Join Date: Jun 2023 Location: USA iTrader: (1)	Thanks for documenting your experience. Keep us updated.
	Appreciate 0 Quote

06-30-2023, 02:30 PM	#17
AmuroRay Brigadier General 2315 Rep 4,173 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	Any update op? __________________ Mods: Yes.
	Appreciate 0 Quote

06-30-2023, 04:43 PM	#18
TheHaze Second Lieutenant 152 Rep 211 Posts Drives: '18 M2 Join Date: Jul 2018 Location: PA iTrader: (0)	I didn't get a chance to try anything else with the car yet. I'm hoping to get this done and tested by early next week, and I'll make sure to update this post when I do.
	Appreciate 0 Quote

07-05-2023, 05:11 PM	#19
TheHaze Second Lieutenant 152 Rep 211 Posts Drives: '18 M2 Join Date: Jul 2018 Location: PA iTrader: (0)	Alright, more logs are at the bottom of the original post. I cleaned the MAF sensor and air filter, but left the 2 MAP sensors alone for now as they're a bit harder to access. I also reset the following adaptations per the list above: - lambda control - intake manifold - lambda sensors - idle - octane I'm not sure if any of this helped at all but timing still isn't where I would like it to be. Weather temp was very hot today so IATs were a bit higher than normal too.
	Appreciate 0 Quote

07-05-2023, 05:54 PM	#20
AmuroRay Brigadier General 2315 Rep 4,173 Posts Drives: M235i Join Date: Aug 2019 Location: Florida iTrader: (0)	Honestly, those logs look a LOT cleaner than before. Minor corrections on cyl 3 and sometimes 2 - but for the most part they look fine. Corrections are normal, you can try to clean it up by adding octane booster or E85. Are you using "top tier" gasoline? I've heard, anecdotally, that it helps as well. Also, those super high IATs on some are going to cause timing to be corrected. __________________ Mods: Yes.
	Appreciate 0 Quote