N54 DCT w/M3 Conversion

  • Login or Register, members don't see Ads!
  • Tip: You can toggle the Dark Theme at the bottom of the page

aus335iguy

Captain
Nov 18, 2017
1,036
A CAN interceptor can generate the required messages for the DSC and other modules. Otherwise the only way I think that it’s been done (by brintech but there might be others )is to run the M3 Dme as well as the msd80/81

The m3 DSC data can be flashed onto a 335i DSC
 
  • 1Like
Reactions: L€X

L€X

Lurker
Dec 30, 2018
22
A CAN interceptor can generate the required messages for the DSC and other modules. Otherwise the only way I think that it’s been done (by brintech but there might be others )is to run the M3 Dme as well as the msd80/81

The m3 DSC data can be flashed onto a 335i DSC
run M3 dme on 335? wow! Very interesting
 

LMB335is

Sergeant
Apr 12, 2017
262
FOB FL
But

But how it works on 1m? Or 1m doesn't have m drive?
The 1M doesn't have Mdrive but it does have MDM. It's accessed through the DSC button much like a regular 335i with the signal going through the JBBF. It may be possible to access MDM using IKM0S and flashing 1M software over the DSC module and running the DSC signal back through the JBBF. I've thought about trying it but I'm satisfied using the M3 software and the DSC button directly controlling DSC on and off and it would be a pain in the ass changing it back. I'm not sure I'd every have a reason to really use it. With the M3 DSC on it's still looser than 335i software and with it off you can just hang it out all you want.
 

Attachments

  • 1Like
Reactions: L€X

Seb335i

Specialist
Jun 14, 2019
55
I'm still collecting parts to do the full retrofit I already have the M3 kombi, GWS and a 335d 2.81 diff.
M3 kombi has been already installed. My question is may install the GWS flash with M3GTS firmware and install the 335d's 2.81 diff or I have to wait to have all the stuff ?
 

L€X

Lurker
Dec 30, 2018
22
I'm still collecting parts to do the full retrofit I already have the M3 kombi, GWS and a 335d 2.81 diff.
M3 kombi has been already installed. My question is may install the GWS flash with M3GTS firmware and install the 335d's 2.81 diff or I have to wait to have all the stuff ?
I suppose yes. First of all I installed kombi and gws, than m3gts flash. After a one or two months I installed m3 dsc and szl. And after a few months later installed 335d diff. So it will work
 
  • 1Like
Reactions: doublespaces

aus335iguy

Captain
Nov 18, 2017
1,036
Technically just the gws installed and the M3 tcu flash will work. It’s likely not doing your clutches any favours and you’ll have error codes but the thing should drive.
 

Seb335i

Specialist
Jun 14, 2019
55
Technically just the gws installed and the M3 tcu flash will work. It’s likely not doing your clutches any favours and you’ll have error codes but the thing should drive.
I plan to do GWS retrofit GTS flash and 2.81 335d's diff as the M3 kombi is already in. I'm still looking for the other parts.
 

L€X

Lurker
Dec 30, 2018
22
What about mhd flash? MHD will think that 335 is 1m after all this upgrades? And there will be no problem to instal mhd?
 
Last edited:

RSL

Sergeant
Aug 11, 2017
395
No. You will either need @jyamona to build a custom bin that you can use through MHD or go through all this https://www.e90post.com/forums/showpost.php?p=24653297&postcount=13
Since that thread popped up again, verified what I long suspected: it works for Peter because the DME for the 80->81 swap obviously came out of a 135. If that was mentioned anywhere in that thread, I missed it previously, but verified the factory original ZB shown in his screen is a Euro 135.

The factory ZB seems to be THE key, as variant/class (E82 135->1M) are easily worked around by disabling runtime checks as he does. Completely different model/chassis (E9x 335 -> E82 1M) need flash time fixes instead because the software chain breaks between original and current (IKM0S ZBs).

His way should (and obviously does) work on 335 if you do swap an MSD81 from a 135/updated ISN into a 3. Short of that, @jyamona is our only hope or find a way to rewrite factory 3 series MSD81 original ZB to a 135/1M ZB so the chain doesn't break. Maybe it's even possible to hard code a 135/1M ZB in a specific flasher as the original ZB for lookup, in which case, seems like it would be easy peasy to flash IKM0S on any 335.

Quick question on custom tunes. Any special changes once we loose the sport button?
M button on the steering wheel would/should be the trigger for high/low throttle request. It is on the 1M (same SZL), but there's a switch to enable it in IKM0S and think that's IKM0S specific. If you're not IKM0S, the high request table should be the only one in use. Most probably copy low (sport) request table over or something in between, but basically, dialing in torque request high as needed/to your liking should cover it.
 

jyamona

Captain
Platinum Vendor
Nov 7, 2016
1,079
Philly
@RSL I'm not following the ask here very well. You are looking for a way to change the original ZB number in the DME? Is that all or something else / additional? Also, what will this gain?
 

RSL

Sergeant
Aug 11, 2017
395
@RSL I'm not following the ask here very well. You are looking for a way to change the original ZB number in the DME? Is that all or something else / additional? Also, what will this gain?
Yes, my theory is, it's a/the break in the loop flashing IKM0S on a 3 directly. It seems that when a 1 series ZB is original software in the DME, IKM0S will take without any fuss (except to disable variant/power class check if it's a 135 original ZB). When a 3 series ZB is original software in the DME instead, it doesn't work.

It might be more checks than just the original ZB, but it seems with DME original to any 1er, IKM0S is as simple as flashing it. If you can make a specific flasher see a 135/1M ZB as the factory original regardless of car, I'm wide open to put my theory to the test ;)
 
  • 1Wow
  • 1Like
Reactions: L€X and derekgates

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.

Top