[Krelle]

Originally Posted by harkes

I dont think it makes sense to drill the N55 DME. Fairly easy to open. The N20 is a whole different story though!



Rev 1 and 2 of my OTS also had all kinds of weird issues. I'll enjoy my BEF and give the guys some much needed time to sort it out

Experience has proven drilling the N55 is the safest way not to ruin the DME.
/Krelle

[frackje]

Do a road trip to pureturbos.eu .

[frackje]

PS: Beware that the AH3 isn't the easiest to flash. I had to go back to BRP twice, and it looks like afranke is also encountering some (maybe the same?) flash issues.

[Lancelot]

No indeed there seems to be some complexity with the hybrid drive. Do you remember which drivetrain malfunction code you got on the first attempts?

proTUNING Freaks do you have some info to share on our AH3 tuning? Darkiedm4 wrote me back to say you're not far from figuring it out, I'd really like to know what you found/learned in the process or compromise (if any) we have to make.

I'll probably plan something in coming weeks with Darkiedm4 @ pureturbos.eu indeed if i can get more specific info to confirm it's working fine - like you say your experience with BR showed it wasn't very straightforward, i'm lucky to have afranke being first with AH3 on bm3

[frackje]

Originally Posted by Lancelot

No indeed there seems to be some complexity with the hybrid drive. Do you remember which drivetrain malfunction code you got on the first attempts?

proTUNING Freaks do you have some info to share on our AH3 tuning? Darkiedm4 wrote me back to say you're not far from figuring it out, I'd really like to know what you found/learned in the process or compromise (if any) we have to make.

I'll probably plan something in coming weeks with Darkiedm4 @ pureturbos.eu indeed if i can get more specific info to confirm it's working fine - like you say your experience with BR showed it wasn't very straightforward, i'm lucky to have afranke being first with AH3 on bm3

Yeah I'm pretty sure BR did everything they could. They've done a ton of test drives and after 20 flash files everything finally worked out.
And the two times I went back I could feel the torque was decreased, but the car is still fast.

I have a feeling this is the cause: The Electric motor delivers up to 230nm. Did you know?

https://ci-portal.zf.com/global/medi..._DataSheet.pdf

If that's correct, the N55 is not supposed to go give more than 470NM. If it does, it will result in the error because the gearbox can't handle more than 700nm.

I'm not 100% sure about this theory though. But I'm pretty sure I had the same error as afranke.

In any case your car will be in very good hands at Darkiedm4 . Give me a sign when you know the date. It's only a 10 minutes drive for me .

[afranke]

The problem I'm encountering appears to be the same as the code being thrown is telling us the maximum total torque is exceeded (what a problem to have, right?), but the behavior itself is a little odd. The most recent appearance of the code I was cruising at 60MPH in Sport mode with the trans in Sport, 30% throttle, 6th gear, 2200-2300RPM. I can't imagine torque is exceeding 470NM in that scenario.

In any case, proTUNING Freaks are FANTASTIC and I'm highly confident that they are close to a resolution for this issue. The map itself I have right now is just awesome, and feels MUCH better than the JB4 (so much so that I've removed the JB4 entirely for the time being). I can't wait to see what results we end up getting, but as always it will take some time and work.

[frackje]

Originally Posted by afranke

The problem I'm encountering appears to be the same as the code being thrown is telling us the maximum total torque is exceeded (what a problem to have, right?), but the behavior itself is a little odd. The most recent appearance of the code I was cruising at 60MPH in Sport mode with the trans in Sport, 30% throttle, 6th gear, 2200-2300RPM. I can't imagine torque is exceeding 470NM in that scenario.

In any case, proTUNING Freaks are FANTASTIC and I'm highly confident that they are close to a resolution for this issue. The map itself I have right now is just awesome, and feels MUCH better than the JB4 (so much so that I've removed the JB4 entirely for the time being). I can't wait to see what results we end up getting, but as always it will take some time and work.

I also encountered the error while cruising / slowly accelerating at low RPM and sometimes at the high way. Have you checked your torque in the the sports display? And what are your current numbers?

[Lancelot]

Indeed the case you mention isn't likely to result in exceeding 700Nm... i wonder if the DME has some bug in calculation, or if another table needs to be updated to change the torque calculation.

At least with the JB4 the DME didn't think the torque had changed and isn't throwing any code, but the gear shifts are very brutal because of this, which is why i want to move tho bm3

Afranke you just convinced me to take the plunge with your last post

@Frackje sure I'll let you know when i'm there, will be good to meet for real at last

[afranke]

Originally Posted by frackje

I also encountered the error while cruising / slowly accelerating at low RPM and sometimes at the high way. Have you checked your torque in the the sports display? And what are your current numbers?

If you're talking current dyno numbers, can you open and save my WinPep8 files with the correct correction factor? The current version available doesn't seem to have STD anymore.

[frackje]

Originally Posted by Lancelot

Indeed the case you mention isn't likely to result in exceeding 700Nm... i wonder if the DME has some bug in calculation, or if another table needs to be updated to change the torque calculation.

At least with the JB4 the DME didn't think the torque had changed and isn't throwing any code, but the gear shifts are very brutal because of this, which is why i want to move tho bm3

Afranke you just convinced me to take the plunge with your last post

@Frackje sure I'll let you know when i'm there, will be good to meet for real at last

335i's are getting around 525NM with a flash tune. So I think we can easily hit the 700NM if the electric motor really gives 230NM.
But I'm not certain yet.

The PDF also says 440NM Wet Clutch => Any idea what this means?

Can you explain the brutal shifts? How much KM do you have?
You don't have an acceleration video by any chance?

[frackje]

Originally Posted by afranke

If you're talking current dyno numbers, can you open and save my WinPep8 files with the correct correction factor? The current version available doesn't seem to have STD anymore.

I'm not a tuner, I can't help you with that.

[Lancelot]

Originally Posted by frackje

335i's are getting around 525NM with a flash tune. So I think we can easily hit the 700NM if the electric motor really gives 230NM.
But I'm not certain yet.

I thought the emotor is supposed to give 50Nm boost on the AH3, not 230Nm. Perhaps 230Nm could be when in full eletric mode, i've never looked at the torque display in this situation tbh, i'll try that tomorrow

The PDF also says 440NM Wet Clutch => Any idea what this means?

Can you explain the brutal shifts? How much KM do you have?
You don't have an acceleration video by any chance?

If i understand correctly, the DME communicates the torque to the gearbox ecu to manage the gear shift, if it thinks your torque input is for instance 200Nm while in reality your outputting 300Nm because of the JB4 increased boost that the DME knows nothing about in its calculated torque, then the gearbox doesn't manage that very well and i think we're seeing increased wear when shifting in full load, where the JB4 boost increase (and torque difference) is at its peak.

This shows with a shift that insn't smooth for me compared to stock, i.e. when shift occurs you get a sudden torque surge when new gear is engaged, that can't be good for the transmission.

That's a problem you don't have with a remap because the dme knows the real parameters and calculates torque accurately.

[frackje]

Originally Posted by Lancelot

I thought the emotor is supposed to give 50Nm boost on the AH3, not 230Nm. Perhaps 230Nm could be when in full eletric mode, i've never looked at the torque display in this situation tbh, i'll try that tomorrow


If i understand correctly, the DME communicates the torque to the gearbox ecu to manage the gear shift, if it thinks your torque input is for instance 200Nm while in reality your outputting 300Nm because of the JB4 increased boost that the DME knows nothing about in its calculated torque, then the gearbox doesn't manage that very well and i think we're seeing increased wear when shifting in full load, where the JB4 boost increase (and torque difference) is at its peak.

This shows with a shift that insn't smooth for me compared to stock, i.e. when shift occurs you get a sudden torque surge when new gear is engaged, that can't be good for the transmission.

That's a problem you don't have with a remap because the dme knows the real parameters and calculates torque accurately.

Just did a quick test, but with only 40% battery. It looks like it's giving up to 110nm in full electric mode.

I have no idea about that, interesting theory. You don't have a video of your acceleration with the current settings?

[PeterPure]

Originally Posted by Krelle

Experience has proven drilling the N55 is the safest way not to ruin the DME.
/Krelle

I have indeed seen some DME's that were badly opened. However the seal was done OKish meaning no water could go in. Was it nice? No... But I guess that happens when those tuners need to open it in 15 minutes.

Then drilling a hole takes less time. But when you make a hole, always water could enter.

If you take your time to properly open and seal the DME, then I dont see any issue with that method.

Greetz,
Peter

[afranke]

So as it turns out DynoJet added STD back into WinPep. Thank god, that was a stupid move on their part. These are the dyno runs from my most recent flash running relatively low boost (only about 13 psi IIRC). Just got a new map from them, so back to testing!

[ronanz]

Originally Posted by Krelle

Experience has proven drilling the N55 is the safest way not to ruin the DME.
/Krelle

......

[Krelle]

Originally Posted by Darkiedm4

I have indeed seen some DME's that were badly opened. However the seal was done OKish meaning no water could go in. Was it nice? No... But I guess that happens when those tuners need to open it in 15 minutes.

Then drilling a hole takes less time. But when you make a hole, always water could enter.

If you take your time to properly open and seal the DME, then I dont see any issue with that method.

Greetz,
Peter

Hi peter,
I'm just letting out information showing that even though you're super careful, the result isn't always what you like it to be.
The rubber plugs prevents water ingress just fine when you apply a little sealant.
Btw turbo project is progressing Hope to be all set for the May track day's
How are you're new Super car doing?

Greetings Krelle

[harkes]

Originally Posted by Lancelot

Ah so the picture isn't as bright and sunny

I'm a strong supporter of the bm3 idea, but perhaps it's just too early for me to jump in, i really can't risk a limp mode in the middle of overtaking :-(

All our cars are "different" so I suggest you just write an email to Dzenno from PTF and ask about your car. He knows if the flash is finished or need further development. Some of us like to be first movers and beta-testers...some dont

[harkes]

Originally Posted by Lancelot

Ah so the picture isn't as bright and sunny

I'm a strong supporter of the bm3 idea, but perhaps it's just too early for me to jump in, i really can't risk a limp mode in the middle of overtaking :-(

All our cars are "different" so I suggest you just write an email to Dzenno from PTF and ask about your car. He knows if the flash is finished or need further development. Some of us like to be first movers and beta-testers...some dont

[GTBrandon]

Originally Posted by afranke

So as it turns out DynoJet added STD back into WinPep. Thank god, that was a stupid move on their part. These are the dyno runs from my most recent flash running relatively low boost (only about 13 psi IIRC). Just got a new map from them, so back to testing!

When was the last time you did spark plugs? Graph looks a little rocky at the top end

[franzzz]

Originally Posted by Lancelot

Thanks! So plan would be:
- Order BM3
- go to tuner ask to unlock DME, install BM3 and ask them to provide me with bin flash tune + stock tune, that i'll be able to load on BM3

Sounds like a plan

Hi

Have been installed the HJS 300 Cell DP on the ah3 ?

[Lancelot]

Originally Posted by franzzz

Hi

Have been installed the HJS 300 Cell DP on the ah3 ?

No. I'm actually freezing my spending on the AH3 as I'm considering swapping for a used F80 M3 as they're starting to show up at more reasonable prices.

My work on chassis has been very educational so that now get a very good understanding of why and how an F80 chassis and engine is better, and since french regulations are very mod-unfriendly I'm thinking perhaps reverting the AH3 to stock in coming months, selling my aftermarket parts, and get an M3 is the way to go. For piece of mind.