[ericlr1225]

Originally Posted by F87source

You can do it through ISTA, and very likely protool (can register injectors and code the diff, dsc, and power steering).

I literally just wrote up a review on protool: https://f87.bimmerpost.com/forums/sh...php?p=29968185

Thanks, I'll look into it.
I just got hands itchy and went out fill up E40.
Did 5 pulls using updated IOS BM3 with new interface(kinda look like MHD now LOL). Thank god nothing weird happened. But auto log seems having bug to record and upload. It only captured my first run after fill-up. First run was manually activated logging.

https://www.bootmod3.net/log?id=641e...729b1d13425927

1.knock detected
2.cylinder 3 is pulling timing in, probably because it's the first run and system was trying to adapt new fuel blend. But I'll keep an eye on its coil and spark later.

Looks like overboosting issue got fixed with v1.2 Stage2 MM. It pulls all the way to the redline. Feels fast and safe I would say.

I'm wondering why E40's timing performed same as E30 and E25 in this map. 8 degrees around 6-6.5k rpm. Should I add more E? Thanks

[M2guru]

Thanks for all of the helpful information in this thread!

I just got BM3 installed on my 2018 M2 (coming from VF Engineering/HEX). Engine-related mods are: Fabspeed cat, charge pipe, CSF FMIC.

Running the Stage 2 Multi-map v1.2. I recorded my first datalog yesterday after winter storage (Minnesota). A couple things seems strange to me when I compare the various logs from this thread (THANKS AGAIN!): 1) HPFP actual vs target near the end of the pull seems WAY off (like half of what it should be for a quick fraction of a second) and 2) the timing is much less than expected.

I have it set on ACN91 even though I have 92 in the tank, so I think that explains the timing being lower than I expect. It's the HPFP being off that concerns me. I don't see this any other map that I looked at on this thread (I didn't look at them all). Would my HPFP really be crashing already? I feel like a Stage 2 tune with ACN91 should be asking that much of it, but let me know if I have wrong thinking.

https://bootmod3.net/log?id=641f1b7dc090c6a84d063168

Thanks again!

[M2guru]

Originally Posted by M2guru

Thanks for all of the helpful information in this thread!

I just got BM3 installed on my 2018 M2 (coming from VF Engineering/HEX). Engine-related mods are: Fabspeed cat, charge pipe, CSF FMIC.

Running the Stage 2 Multi-map v1.2. I recorded my first datalog yesterday after winter storage (Minnesota). A couple things seems strange to me when I compare the various logs from this thread (THANKS AGAIN!): 1) HPFP actual vs target near the end of the pull seems WAY off (like half of what it should be for a quick fraction of a second) and 2) the timing is much less than expected.

I have it set on ACN91 even though I have 92 in the tank, so I think that explains the timing being lower than I expect. It's the HPFP being off that concerns me. I don't see this any other map that I looked at on this thread (I didn't look at them all). Would my HPFP really be crashing already? I feel like a Stage 2 tune with ACN91 should be asking that much of it, but let me know if I have wrong thinking.

https://bootmod3.net/log?id=641f1b7dc090c6a84d063168

Thanks again!

I may have answered my own question by finding this thread. https://f87.bimmerpost.com/forums/sh...ghlight=dorsch It appears to be for me that the stock HPFP is the bottleneck/weakest link now. If anyone cares to confirm, I would appreciate it.

[ZM2]

Originally Posted by M2guru

I may have answered my own question by finding this thread. https://f87.bimmerpost.com/forums/sh...ghlight=dorsch It appears to be for me that the stock HPFP is the bottleneck/weakest link now. If anyone cares to confirm, I would appreciate it.

Yup, that’s what it looks like. Dorch Stage 1 will be enough for unless you decide to do a turbo upgrade and run ethanol.

[ZM2]

Originally Posted by ericlr1225

Thanks, I'll look into it.
I just got hands itchy and went out fill up E40.
Did 5 pulls using updated IOS BM3 with new interface(kinda look like MHD now LOL). Thank god nothing weird happened. But auto log seems having bug to record and upload. It only captured my first run after fill-up. First run was manually activated logging.

https://www.bootmod3.net/log?id=641e...729b1d13425927

1.knock detected
2.cylinder 3 is pulling timing in, probably because it's the first run and system was trying to adapt new fuel blend. But I'll keep an eye on its coil and spark later.

Looks like overboosting issue got fixed with v1.2 Stage2 MM. It pulls all the way to the redline. Feels fast and safe I would say.

I'm wondering why E40's timing performed same as E30 and E25 in this map. 8 degrees around 6-6.5k rpm. Should I add more E? Thanks

I find the Multimaps work best with E45-55. The timing drop on cylinder 3 looks very suspect…

[M2guru]

Originally Posted by ZM2

Yup, that’s what it looks like. Dorch Stage 1 will be enough for unless you decide to do a turbo upgrade and run ethanol.

So then Stage 2 isn't really Stage 2 (according to BM3). It's really Stage 2+ where you need a HPFP. Correct?

[ZM2]

Originally Posted by M2guru

So then Stage 2 isn't really Stage 2 (according to BM3). It's really Stage 2+ where you need a HPFP. Correct?

From what I've seen, it's more about the stock HPFP. Some guys have strong ones from the factory and MM Stg 2 is no problem, some guys have weaker ones and need to upgrade sooner. 2+ definitely needs the HPFP upgrade.

Plus, the stock HPFP performance degrades over time and they're now 5-7-years old in our OG M2's.

[ericlr1225]

Originally Posted by M2guru

So then Stage 2 isn't really Stage 2 (according to BM3). It's really Stage 2+ where you need a HPFP. Correct?

I have the same year M2 as you do, if you check my posts, the stock HPFP of my car even failed a bit with stock tune. (I kept my logs so that others can see)

Once I installed the upgrade one, all shits gone.
BTW, low fuel pressure could cause serious problem to engine especially tuned cars with higher boost target. My advice to you is tune back your car to stock tunes, and try to do some logs as I did, double check your fuel pressure under WOT. Then decide where to go. Either keep your stock tune and WOT anytime you want and enjoy the car. Or upgrade HPFP and try the fun part LOL
Good Luck

[M2guru]

Originally Posted by ericlr1225

I have the same year M2 as you do, if you check my posts, the stock HPFP of my car even failed a bit with stock tune. (I kept my logs so that others can see)

Once I installed the upgrade one, all shits gone.
BTW, low fuel pressure could cause serious problem to engine especially tuned cars with higher boost target. My advice to you is tune back your car to stock tunes, and try to do some logs as I did, double check your fuel pressure under WOT. Then decide where to go. Either keep your stock tune and WOT anytime you want and enjoy the car. Or upgrade HPFP and try the fun part LOL
Good Luck

Thanks for your thoughts! I'll dig back at your posts.

I dropped the tune down to Stage 1 91 from Stage 2 ACN91 and my HPFP can keep up with that, so I don't plan to go back to stock.

One thing I am looking at now is the boost pressure and timing between the two datalogs. I am surprised to see Stage 1 91 at a target boost of about 16.5psi and Stage 2 ACN91 target boost at 17psi - not much difference.
The timing of Stage 1 91 of 5-8 and Stage 2 ACN91 of 3-4.5 also doesn't seem like much difference. That's not much of a difference. So I am guessing I am right at the limit.

[ericlr1225]

Originally Posted by ZM2

I find the Multimaps work best with E45-55. The timing drop on cylinder 3 looks very suspect…

After running Stage2 mm smoothly for a week, except little hiccups in 4th gear WOT, nothing major. I flashed to stage2+ mm last night, same fuel E50mix.
Car stuttering crazy above 3.5k rpm, looks like it's misfiring but didn't trigger drivetrain malfunction light. Tried couple times later same happened and went into limp mode finally during last run.

https://www.bootmod3.net/log?id=6431...0b430492cb3da7

everything looks ok thru the log.
tried map 3 93oct, some stuttering too but not as serious as map 1.

I guess every car is different and there is no one for all plan. We basically have exactly same mods, except i'm running stock turbo for now.
I'll start lowering plug gap a little to 0.025'' and see how it perform.

[ZM2]

Originally Posted by ericlr1225

After running Stage2 mm smoothly for a week, except little hiccups in 4th gear WOT, nothing major. I flashed to stage2+ mm last night, same fuel E50mix.
Car stuttering crazy above 3.5k rpm, looks like it's misfiring but didn't trigger drivetrain malfunction light. Tried couple times later same happened and went into limp mode finally during last run.

https://www.bootmod3.net/log?id=6431...0b430492cb3da7

everything looks ok thru the log.
tried map 3 93oct, some stuttering too but not as serious as map 1.

I guess every car is different and there is no one for all plan. We basically have exactly same mods, except i'm running stock turbo for now.
I'll start lowering plug gap a little to 0.025'' and see how it perform.

Have you tried doing a Full Flash vs a quick flash?

[ericlr1225]

Originally Posted by ZM2

Have you tried doing a Full Flash vs a quick flash?

how to do a full flash? I just simply flash any map by pressing flash. Would "full flash" make any difference?

Also I sent logs to PTF and Halim said he released new version of stage 2+ multimap, overboost related.

[ZM2]

Originally Posted by ericlr1225

how to do a full flash? I just simply flash any map by pressing flash. Would "full flash" make any difference?

Also I sent logs to PTF and Halim said he released new version of stage 2+ multimap, overboost related.

I see v1.2 of the multimaps with adjusted boost and load targets. I wonder if that means less power?

[ericlr1225]

Originally Posted by ZM2

I see v1.2 of the multimaps with adjusted boost and load targets. I wonder if that means less power?

Quick update:

1. stage2+ multimap seems to have some programing issue, I dunno if it's just me or it would happen to others. Idling got rough after flash. I tried to give some gas while idling and the rpm just went up and down crazy. pre-throttle boost parameter pinned at -1.4psi. I got every settings right, double checked.

2. My car just couldn't run NGK stock gap. When boost goes above 17.5ish, it will start misfiring. Even happened a little with stage2 multimap(E49fuel) in high rpm(tiny stuttering without codes). I tried stage2+ multimap and instant limp mode at 4k rpm. Tried again couple days later, same result.
https://www.bootmod3.net/log?id=6431...0b430492cb3da7
(It is version 1.1, upload logs to PTF and that's when he update v1.2)

3. I multimeter tested 97506 and all my coils, re-gapped to 0.023''. Flashed to Stage 2+ E30 single map running same tank of E49 fuel. Car is happy than ever, no matter which gear WOT, 1st&2nd car just move sideways instead of forward LOL. I finally felt what you described freight train. even I'm running stock turbo.
https://www.bootmod3.net/log?id=643b...729b710de1cf05
https://www.bootmod3.net/log?id=643b...90c635ce74d4fd

4. I'm still obsessed with "largest gap without misfire" theory but my car just won't cooperate. I bought a set of BMW NGK F8s recommended by F80/F82 forum, will give it a try to see if I can run larger gap like you. Also I will try to lower the gap of bosch OEM 330s to 0.028'' to see how it act.
https://www.fcpeuro.com/products/bmw...mw-12120042724
But let me enjoy the car for a while longer LOL.

Would u pls take a look at my logs? Also anyone can flash to v1.2 Stage2+ multimap to see if it's broken would be nice. Welcome to jump in. Peace!

[F87source]

Originally Posted by ericlr1225

Quick update:

1. stage2+ multimap seems to have some programing issue, I dunno if it's just me or it would happen to others. Idling got rough after flash. I tried to give some gas while idling and the rpm just went up and down crazy. pre-throttle boost parameter pinned at -1.4psi. I got every settings right, double checked.

2. My car just couldn't run NGK stock gap. When boost goes above 17.5ish, it will start misfiring. Even happened a little with stage2 multimap(E49fuel) in high rpm(tiny stuttering without codes). I tried stage2+ multimap and instant limp mode at 4k rpm. Tried again couple days later, same result.
https://www.bootmod3.net/log?id=6431...0b430492cb3da7
(It is version 1.1, upload logs to PTF and that's when he update v1.2)

3. I multimeter tested 97506 and all my coils, re-gapped to 0.023''. Flashed to Stage 2+ E30 single map running same tank of E49 fuel. Car is happy than ever, no matter which gear WOT, 1st&2nd car just move sideways instead of forward LOL. I finally felt what you described freight train. even I'm running stock turbo.
https://www.bootmod3.net/log?id=643b...729b710de1cf05
https://www.bootmod3.net/log?id=643b...90c635ce74d4fd

4. I'm still obsessed with "largest gap without misfire" theory but my car just won't cooperate. I bought a set of BMW NGK F8s recommended by F80/F82 forum, will give it a try to see if I can run larger gap like you. Also I will try to lower the gap of bosch OEM 330s to 0.028'' to see how it act.
https://www.fcpeuro.com/products/bmw...mw-12120042724
But let me enjoy the car for a while longer LOL.

Would u pls take a look at my logs? Also anyone can flash to v1.2 Stage2+ multimap to see if it's broken would be nice. Welcome to jump in. Peace!

How old are your ignition coils? Maybe they are weakened due to age. Otheriwse if they are relatively new then it just might be spark blow out, and you have no choice but to either gap down or preferably upgrade your coils to something like the B58 coil conversion kits.

[ericlr1225]

Originally Posted by F87source

How old are your ignition coils? Maybe they are weakened due to age. Otherwise if they are relatively new then it just might be spark blow out, and you have no choice but to either gap down or preferably upgrade your coils to something like the B58 coil conversion kits.

I believe we talked about this last page, plugs less than 1k miles, new Eldor coil(you confirmed those are right parts last page) swapped with plugs also less than 1k miles.

Yeah, I guess 0.030'' work on ZM2's car perfectly but 100% not with mine. We have very similar mods except turbo. Maybe turbo is the reason I dunno.

Anyway, as long as gapping down is working well, I'll just leave them be for now. If something is going wrong in the future, I guess upgrading B58 system is the way. btw It has fitment issue with N55 M2, I really don't want to cut OEM wire plastic cover and O2 bracket.

Also testing BMW F8s is my next step, According to F80/82 forums, F8s solved a lot of issues for them. They are built for E85, also capable to run pure pump gas. they are more like enhanced version of 97506 since we all run ethanol mix. They compared both logs. Looks like F8s got the cleanest timing and Idling also last longer than 97506. I'll keep updating. Thanks for your info

Edit: btw, how to do a "full flash" with BM3? Still haven't figured it out.

[ZM2]

Originally Posted by ericlr1225

I believe we talked about this last page, plugs less than 1k miles, new Eldor coil(you confirmed those are right parts last page) swapped with plugs also less than 1k miles.

Yeah, I guess 0.030'' work on ZM2's car perfectly but 100% not with mine. We have very similar mods except turbo. Maybe turbo is the reason I dunno.

Anyway, as long as gapping down is working well, I'll just leave them be for now. If something is going wrong in the future, I guess upgrading B58 system is the way. btw It has fitment issue with N55 M2, I really don't want to cut OEM wire plastic cover and O2 bracket.

Also testing BMW F8s is my next step, According to F80/82 forums, F8s solved a lot of issues for them. They are built for E85, also capable to run pure pump gas. they are more like enhanced version of 97506 since we all run ethanol mix. They compared both logs. Looks like F8s got the cleanest timing and Idling also last longer than 97506. I'll keep updating. Thanks for your info

Edit: btw, how to do a "full flash" with BM3? Still haven't figured it out.

Glad you found a setup that works. “Force Flash” is the option I meant. Takes ~5min.

[F87source]

Originally Posted by ericlr1225

I believe we talked about this last page, plugs less than 1k miles, new Eldor coil(you confirmed those are right parts last page) swapped with plugs also less than 1k miles.

Yeah, I guess 0.030'' work on ZM2's car perfectly but 100% not with mine. We have very similar mods except turbo. Maybe turbo is the reason I dunno.

Anyway, as long as gapping down is working well, I'll just leave them be for now. If something is going wrong in the future, I guess upgrading B58 system is the way. btw It has fitment issue with N55 M2, I really don't want to cut OEM wire plastic cover and O2 bracket.

Also testing BMW F8s is my next step, According to F80/82 forums, F8s solved a lot of issues for them. They are built for E85, also capable to run pure pump gas. they are more like enhanced version of 97506 since we all run ethanol mix. They compared both logs. Looks like F8s got the cleanest timing and Idling also last longer than 97506. I'll keep updating. Thanks for your info

Edit: btw, how to do a "full flash" with BM3? Still haven't figured it out.

Yeah sorry, I don't remember what we talked about.

Yeah if you have to gap down, you have to gap down. I didn't know that the nexsys kit doesn't fit the m2, that's interesting and good to know.

[TheSandman_M2]

Originally Posted by F87source

Yeah sorry, I don't remember what we talked about.

Yeah if you have to gap down, you have to gap down. I didn't know that the nexsys kit doesn't fit the m2, that's interesting and good to know.

The nexsys fits the m2

[F87source]

Originally Posted by TheSandman_M2

The nexsys fits the m2

Did you have to cut or modify anything?

Can the engine cover still fit with the new coils?

Also the pnp harness wiring looks super short and strained, not sure if that is just due to the images.

[TheSandman_M2]

no cutting, none of the wires are strained and I don't bother with the cover anymore.

[F87source]

Originally Posted by TheSandman_M2

no cutting, none of the wires are strained and I don't bother with the cover anymore.

Ok perfect - I guess it was jus the pictures that made it look like the wires are strained, thank you for the info!


BTW will the engine cover fit if someone wanted to use it? Or would it hit the cables?