B58 Bootmod3

G50 · 02-13-2021, 07:00 AM

I know a few on here have bootmod3, and wanted to see if other people's cars drive similar to mine, as I installed it yesterday on my 540i and the power delivery is questionable. Granted a 340i will be a different experience to drive, but I would have though throttle mapping will be similar.

First though, I had a drivetrain error still on the dash once flashing was complete, which meant that the car would start, but wouldn't shift out of Park. After switching back to stock and then back to Stage1 I couldn't get rid of the error, even when flashing stock or performing a "recode". So I locked the car, left it for a while and went to google/raise a support ticket.
When I went back to the car about 30-40mins later, the error was gone and hasn't come back since...

Since yesterday morning I've done over 100 miles(majority for work) and although the performance increase is insane, the driveability isn't great. It feels like only the first 25% of the throttle does anything, it's more sensitive and short than OEM sport mode, even in comfort. You have to be really careful with the throttle to drive smoothly around town, which I could get used to, however the biggest frustration is when "pressing on" on country roads.
Say you are going round a corner with a steady throttle at somewhere between 3k rpm and 5k rpm, and as the corner exit begins to show itself you feed in the power carefully, well there is an all or nothingness about it, and isn't progressive at all. My mapped RWD 330d was much more progressive with the power delivery and throttle mapping, and comparing purely the mapped engines, it was more fun to drive despite being a diesel, as you could request a percentage of the power with your foot, and receive that percentage. It was an intuitive power delivery, and had none of that overboosty feeling of letting off full throttle and a delay before the power stops either.

I have been in contact with the support guys and have done some datalogging for them (first time doing anything like that, so I don't know if what I have logged is useful), but I only managed to get the logs to them at the end of their working day yesterday, so I don't expect anything back until Monday.

I just wondered what other people's experience was? I had a superchips remote map on my fiesta st 6 years ago, and that was a bit spiky, however with only 220bhp it was manageable and still fun, with over 400bhp and a lot of weight to upset mid corner, this isn't great and not sure if I can keep it on the car as it currently is. Hopefully the support guys will be able to do something for me.

MY340i · 02-13-2021, 09:37 AM

Wrong map maybe? Is the 540i a gen 2 B58?

I’ve had good driveability with mgflasher.

Sgm123 · 02-13-2021, 01:32 PM

It may be a bit cold to try but are you sure tc isn’t kicking in. If your on summers you won’t put the power down in these temps at the mo.

G50 · 02-13-2021, 01:52 PM

Quote:

Originally Posted by Stu101

It may be a bit cold to try but are you sure tc isn’t kicking in. If your on summers you won’t put the power down in these temps at the mo.

It's absolutely fine on full throttle, puts it all down fine too (xdrive with 245 and 275 section tyres).
It's part throttle that is the issue, it gives me more power than I'm asking for when trying to "feed" the power in.

I.E.
10% throttle gives you around 30% power (roughly)
30% throttle gives you a big jump to 90% power
40% is full throttle
the other 60% of travel does nothing, and if you want say 50% power, well you can't have that, it's a bit of power or a lot of power, no choices in between.

Watsey · 02-13-2021, 02:03 PM

Sounds very unusual - it's the first that I've heard of it.

I think NISFAN ran BM3 on his M240i and I think SteveChester is running it on his M4. Maybe they can comment.

Sgm123 · 02-13-2021, 02:05 PM

Yeah that doesn’t sound normal from my experience. Bm3 are normally very good with responding and sorting issues.

Post your log of you like, I won’t pretend to know everything but know the basics

SteveChester · 02-13-2021, 02:15 PM

Quote:

Originally Posted by Watsey

Sounds very unusual - it's the first that I've heard of it.

I think NISFAN ran BM3 on his M240i and I think SteveChester is running it on his M4. Maybe they can comment.

Yes I'm running BM3 no issues for me though. Support very responsive and I'm sure with the comprehensive logging it has they will be able to figure it out.

G50 · 02-13-2021, 02:32 PM

Quote:

Originally Posted by Stu101

Yeah that doesn’t sound normal from my experience. Bm3 are normally very good with responding and sorting issues.

Post your log of you like, I won’t pretend to know everything but know the basics

I think I'm going to have to do some more logs as I just clicked on "autolog" which seems to only start logging once accelerator position is at 70%, and stops logging when accelerator goes below that. All it's really telling me is that anything 70% and above for accelerator position is giving me 100% at the throttle body, but I suspect even stock is like that.

I need to go out and just log rather than autolog, so i can see what it's doing at part throttle (pedal).

It does show a delay between me coming off the pedal and the throttle body closing of about half a second though.

G50 · 02-13-2021, 02:44 PM

https://www.bootmod3.net/log?id=6026...0b43474d7f5005

I know naff all about this, but it seems as I get on the throttle, there is knock detected, timing is pulled, down to negative on some cylinders, and then rises back up to around 10, with a massive difference between each cylinder.

And the load target is like 170% for full throttle, and at the point i take my foot off the pedal, the load target is still 150% for 0% accelerator pedal angle. Like i said this is the first time looking at these, but instinct and limited knowledge says those numbers aren't where they should be...

Sgm123 · 02-13-2021, 03:37 PM

Timing is out of range normally want within 3 degrees across all cylinders. Prob octane related - momentum for me gives much better logs than v power but others experience the opposite.

Stft look a bit high to me for a stage 1 mine was consistently 1-1.01 ish although your 1.07 is not out of range I think 1.1 is the limit.

Afr and hpfp seem to be staying on target.

Worth adding torque target and actual to the log

Your overall boost looks really low. My logs on stage 1 remain around 17psi throughout. Not sure if the gen 2 is different to my gen 1.

Log is a bit short try 2.5k to min 6.5k your in the right gear, stick with 4. If conditions allow do it with traction off.

Does seem to be staying on throttle for some time after which isn’t normal from my experience.

Hope that helps and you get it resolved quickly.

G50 · 02-13-2021, 03:49 PM

Cheers, that's helpful.

I'm on Momentum 99.

I didn't want to post one using the full rev range as the speed gets incriminating!

Here is one on the "rolling road" https://www.bootmod3.net/log?id=6026...0b4346b9c7c049

Boost peaks at 16.8psi.

Sgm123 · 02-13-2021, 03:52 PM

That’s a lot cleaner than the previous log.

M140_BCS · 02-13-2021, 04:12 PM

Quote:

Originally Posted by G50

Cheers, that's helpful.

I'm on Momentum 99.

I didn't want to post one using the full rev range as the speed gets incriminating!

Here is one on the "rolling road" https://www.bootmod3.net/log?id=6026...0b4346b9c7c049

Boost peaks at 16.8psi.

This log looks healthy with hardly any timing corrections right through the range.

The previous log had upto -8 degrees pull on cylinders 1 & 2 which is very poor.

Octane level is too low for the 93 tune.

I would flash the 91 octane map if you are still having that amount of timing pull and post a log 2.5k - 6.5k rpm

G50 · 02-13-2021, 05:29 PM

Thanks. I'll purchase the full map pack and try the 91 tune, hopefully it will fix the spiky nature as well as timing. There's a good chance I'm not running on pure 99ron yet as I hadn't run the previous tank of 95 to empty, though the log was done on 2nd fill up with 99. Could be sub par fuel also I suppose.

chris-c · 02-14-2021, 05:28 AM

The first log is utterly nasty. The timing is all over the place and as others have said it looks to be octane related.

The second log is far nicer. The first looks like you've just mapped it then trashed it and the car is all over the place.

I've found nicer logs come with a bit of ethanol or octane boost.

I can't say that my throttle felt any different when I mapped the car but I have a pedal box on to make it more "responsive" as I like that style.

G50 · 02-14-2021, 08:28 AM

Thanks all, I loaded the 91octane map today and its miles better. Doesn't feel quite as quick ultimately, but much nicer to drive. Seems the fuel it had in it wasn't good enough, despite claiming to be 99 RON.

Sgm123 · 02-14-2021, 08:41 AM

Good to hear. It may well be in a couple of months time after lockdown when the turnover of fuel increases again the 93 map runs fine. Last lockdown I had to swap from 93 to 91 map but a month later 93 ran perfectly.

Seems for a lot of garages the super unleaded just sits for a long time with the lack of demand and ultimately starts to lose its octane.

chris-c · 02-14-2021, 10:50 AM

This is the problem with the inconstancy of fuels. I honestly couldn't believe the difference 4l of ethanol made to a tank of fuel on Stg2 / Stg2+. Timing improved, response was better, times were better. I tested it recently with a tank of neat momentum and it IS slower and the logs are worse. Had to run 2 tanks to bring it down to E5 but I wanted to prove a point. It's about £3 a tank difference so well worth it!

M140_BCS · 02-14-2021, 02:19 PM

Quote:

Originally Posted by chris-c

This is the problem with the inconstancy of fuels. I honestly couldn't believe the difference 4l of ethanol made to a tank of fuel on Stg2 / Stg2+. Timing improved, response was better, times were better. I tested it recently with a tank of neat momentum and it IS slower and the logs are worse. Had to run 2 tanks to bring it down to E5 but I wanted to prove a point. It's about £3 a tank difference so well worth it!

Is ethanol available to buy in the uk under £2 per litre?

Ekofuel was the cheapest I could find at around £2.50 litre if you purchased 100+ litres.

chris-c · 02-15-2021, 02:38 PM

Quote:

Originally Posted by M140_BCS

Is ethanol available to buy in the uk under £2 per litre?

Ekofuel was the cheapest I could find at around £2.50 litre if you purchased 100+ litres.

I bought 96 litres for £184 delivered from an Ebay seller the other day. it WAS available

jackstrath · 02-17-2021, 08:00 AM

I know what you mean, with the snow we recently had modulating the throttle can be harder than you would expect, im lucky that iv had the map on the car for a year now so im used to it.

Its like a wall of torque as i suspect the boost ramps in, and like you say mid range mid throttle it can be a bit "on / off" i was half tempted to switch back to stock for snow and im not needing/using the power but got used to it and then the snow started to melt.

I feel a custom map would prob be the only way to get rid of this, its just the side effect of having a twin scroll turbo that can make the engine have its full torque at something as low as 2000rpm

G50 · 05-14-2021, 03:58 PM

Thought I would update this thread as I have finally fully solved the issue.

Recap: 93 bootmod3 map was very jerky, hard to modulate the throttle. 91 map was better but not as good as stock or other mapped cars I've had (for power delivery and throttle response)
Removed the BMC intake and it improved slightly again, but still not where I would want or expect it.

Anyway, today I found that the exhaust flap was rusted closed and unable to open. I've managed to force it open and keep it open and the power delivery is now perfect!

I can only imagine it was able to get more air in than it could expel through the single exhaust outlet making the power delivery spikey as the ecu tried to manage air flow through the engine via fueling.

And a bonus of it sounds slightly more fruity than before, as a very quiet car was even quieter than it should be.

02-13-2021, 07:00 AM	#1
G50 Captain 944 Rep 861 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	B58 Bootmod3 I know a few on here have bootmod3, and wanted to see if other people's cars drive similar to mine, as I installed it yesterday on my 540i and the power delivery is questionable. Granted a 340i will be a different experience to drive, but I would have though throttle mapping will be similar. First though, I had a drivetrain error still on the dash once flashing was complete, which meant that the car would start, but wouldn't shift out of Park. After switching back to stock and then back to Stage1 I couldn't get rid of the error, even when flashing stock or performing a "recode". So I locked the car, left it for a while and went to google/raise a support ticket. When I went back to the car about 30-40mins later, the error was gone and hasn't come back since... Since yesterday morning I've done over 100 miles(majority for work) and although the performance increase is insane, the driveability isn't great. It feels like only the first 25% of the throttle does anything, it's more sensitive and short than OEM sport mode, even in comfort. You have to be really careful with the throttle to drive smoothly around town, which I could get used to, however the biggest frustration is when "pressing on" on country roads. Say you are going round a corner with a steady throttle at somewhere between 3k rpm and 5k rpm, and as the corner exit begins to show itself you feed in the power carefully, well there is an all or nothingness about it, and isn't progressive at all. My mapped RWD 330d was much more progressive with the power delivery and throttle mapping, and comparing purely the mapped engines, it was more fun to drive despite being a diesel, as you could request a percentage of the power with your foot, and receive that percentage. It was an intuitive power delivery, and had none of that overboosty feeling of letting off full throttle and a delay before the power stops either. I have been in contact with the support guys and have done some datalogging for them (first time doing anything like that, so I don't know if what I have logged is useful), but I only managed to get the logs to them at the end of their working day yesterday, so I don't expect anything back until Monday. I just wondered what other people's experience was? I had a superchips remote map on my fiesta st 6 years ago, and that was a bit spiky, however with only 220bhp it was manageable and still fun, with over 400bhp and a lot of weight to upset mid corner, this isn't great and not sure if I can keep it on the car as it currently is. Hopefully the support guys will be able to do something for me.
	Appreciate 0 Tweet Quote

02-13-2021, 09:37 AM	#2
MY340i Major 720 Rep 1,444 Posts Drives: Various Join Date: Feb 2020 Location: London iTrader: (0)	Wrong map maybe? Is the 540i a gen 2 B58? I’ve had good driveability with mgflasher.
	Appreciate 0 Quote

02-13-2021, 01:32 PM	#3
Sgm123 Second Lieutenant 54 Rep 281 Posts Drives: Bmw Join Date: Aug 2017 Location: Hertfordshire iTrader: (0)	It may be a bit cold to try but are you sure tc isn’t kicking in. If your on summers you won’t put the power down in these temps at the mo.
	Appreciate 0 Quote

02-13-2021, 02:03 PM	#5
Watsey Major General 6404 Rep 8,492 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	Sounds very unusual - it's the first that I've heard of it. I think NISFAN ran BM3 on his M240i and I think SteveChester is running it on his M4. Maybe they can comment. __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
	Appreciate 1 G50944.00 Quote

02-13-2021, 02:05 PM	#6
Sgm123 Second Lieutenant 54 Rep 281 Posts Drives: Bmw Join Date: Aug 2017 Location: Hertfordshire iTrader: (0)	Yeah that doesn’t sound normal from my experience. Bm3 are normally very good with responding and sorting issues. Post your log of you like, I won’t pretend to know everything but know the basics
	Appreciate 0 Quote

02-13-2021, 02:44 PM	#9
G50 Captain 944 Rep 861 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	https://www.bootmod3.net/log?id=6026...0b43474d7f5005 I know naff all about this, but it seems as I get on the throttle, there is knock detected, timing is pulled, down to negative on some cylinders, and then rises back up to around 10, with a massive difference between each cylinder. And the load target is like 170% for full throttle, and at the point i take my foot off the pedal, the load target is still 150% for 0% accelerator pedal angle. Like i said this is the first time looking at these, but instinct and limited knowledge says those numbers aren't where they should be...
	Appreciate 0 Quote

02-13-2021, 03:37 PM	#10
Sgm123 Second Lieutenant 54 Rep 281 Posts Drives: Bmw Join Date: Aug 2017 Location: Hertfordshire iTrader: (0)	Timing is out of range normally want within 3 degrees across all cylinders. Prob octane related - momentum for me gives much better logs than v power but others experience the opposite. Stft look a bit high to me for a stage 1 mine was consistently 1-1.01 ish although your 1.07 is not out of range I think 1.1 is the limit. Afr and hpfp seem to be staying on target. Worth adding torque target and actual to the log Your overall boost looks really low. My logs on stage 1 remain around 17psi throughout. Not sure if the gen 2 is different to my gen 1. Log is a bit short try 2.5k to min 6.5k your in the right gear, stick with 4. If conditions allow do it with traction off. Does seem to be staying on throttle for some time after which isn’t normal from my experience. Hope that helps and you get it resolved quickly.
	Appreciate 1 G50944.00 Quote

02-13-2021, 03:49 PM	#11
G50 Captain 944 Rep 861 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	Cheers, that's helpful. I'm on Momentum 99. I didn't want to post one using the full rev range as the speed gets incriminating! Here is one on the "rolling road" https://www.bootmod3.net/log?id=6026...0b4346b9c7c049 Boost peaks at 16.8psi.
	Appreciate 0 Quote

02-13-2021, 03:52 PM	#12
Sgm123 Second Lieutenant 54 Rep 281 Posts Drives: Bmw Join Date: Aug 2017 Location: Hertfordshire iTrader: (0)	That’s a lot cleaner than the previous log.
	Appreciate 0 Quote

02-13-2021, 05:29 PM	#14
G50 Captain 944 Rep 861 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	Thanks. I'll purchase the full map pack and try the 91 tune, hopefully it will fix the spiky nature as well as timing. There's a good chance I'm not running on pure 99ron yet as I hadn't run the previous tank of 95 to empty, though the log was done on 2nd fill up with 99. Could be sub par fuel also I suppose.
	Appreciate 0 Quote

02-14-2021, 05:28 AM	#15
chris-c Lieutenant Colonel 901 Rep 1,801 Posts Drives: F31 340i RWD Join Date: Feb 2018 Location: Kent iTrader: (0)	The first log is utterly nasty. The timing is all over the place and as others have said it looks to be octane related. The second log is far nicer. The first looks like you've just mapped it then trashed it and the car is all over the place. I've found nicer logs come with a bit of ethanol or octane boost. I can't say that my throttle felt any different when I mapped the car but I have a pedal box on to make it more "responsive" as I like that style. __________________ Europe's fastest (stock block) *F31 340i RWD* \| MPPSK \| XHP 3 \| Pure800 \| Port Meth \| Dorch 2 HPFP \| MG Flasher**
	Appreciate 1 G50944.00 Quote

02-14-2021, 08:28 AM	#16
G50 Captain 944 Rep 861 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	Thanks all, I loaded the 91octane map today and its miles better. Doesn't feel quite as quick ultimately, but much nicer to drive. Seems the fuel it had in it wasn't good enough, despite claiming to be 99 RON.
	Appreciate 0 Quote

02-14-2021, 08:41 AM	#17
Sgm123 Second Lieutenant 54 Rep 281 Posts Drives: Bmw Join Date: Aug 2017 Location: Hertfordshire iTrader: (0)	Good to hear. It may well be in a couple of months time after lockdown when the turnover of fuel increases again the 93 map runs fine. Last lockdown I had to swap from 93 to 91 map but a month later 93 ran perfectly. Seems for a lot of garages the super unleaded just sits for a long time with the lack of demand and ultimately starts to lose its octane.
	Appreciate 1 G50944.00 Quote

02-14-2021, 10:50 AM	#18
chris-c Lieutenant Colonel 901 Rep 1,801 Posts Drives: F31 340i RWD Join Date: Feb 2018 Location: Kent iTrader: (0)	This is the problem with the inconstancy of fuels. I honestly couldn't believe the difference 4l of ethanol made to a tank of fuel on Stg2 / Stg2+. Timing improved, response was better, times were better. I tested it recently with a tank of neat momentum and it IS slower and the logs are worse. Had to run 2 tanks to bring it down to E5 but I wanted to prove a point. It's about £3 a tank difference so well worth it! __________________ Europe's fastest (stock block) *F31 340i RWD* \| MPPSK \| XHP 3 \| Pure800 \| Port Meth \| Dorch 2 HPFP \| MG Flasher**
	Appreciate 0 Quote

02-17-2021, 08:00 AM	#21
jackstrath Major 659 Rep 1,239 Posts Drives: 16' F31 340i & 03' Focus RS Join Date: Aug 2014 Location: Aberdeen iTrader: (0)	I know what you mean, with the snow we recently had modulating the throttle can be harder than you would expect, im lucky that iv had the map on the car for a year now so im used to it. Its like a wall of torque as i suspect the boost ramps in, and like you say mid range mid throttle it can be a bit "on / off" i was half tempted to switch back to stock for snow and im not needing/using the power but got used to it and then the snow started to melt. I feel a custom map would prob be the only way to get rid of this, its just the side effect of having a twin scroll turbo that can make the engine have its full torque at something as low as 2000rpm
	Appreciate 1 G50944.00 Quote

05-14-2021, 03:58 PM	#22
G50 Captain 944 Rep 861 Posts Drives: G31 Join Date: Nov 2018 Location: Manchester iTrader: (0)	Thought I would update this thread as I have finally fully solved the issue. Recap: 93 bootmod3 map was very jerky, hard to modulate the throttle. 91 map was better but not as good as stock or other mapped cars I've had (for power delivery and throttle response) Removed the BMC intake and it improved slightly again, but still not where I would want or expect it. Anyway, today I found that the exhaust flap was rusted closed and unable to open. I've managed to force it open and keep it open and the power delivery is now perfect! I can only imagine it was able to get more air in than it could expel through the single exhaust outlet making the power delivery spikey as the ecu tried to manage air flow through the engine via fueling. And a bonus of it sounds slightly more fruity than before, as a very quiet car was even quieter than it should be.
	Appreciate 0 Quote