Karter16's Silbergrau E46 M3 Journal

[karter16]

Hell yeah! This reads like I felt.

It's so good and so satisfying when it comes together and you see what the car is capable of when it's tuned right.

Did you get through high load, low rpm testing? Specifically around 2k rpm? There might be a gem waiting for you to discover.

So it's almost there - the pinging is resolved, there's just a bit of a lump there still which I have to figure out - this is probably the gem you're referring to

Those were also my thoughts exactly on how to get more CAN variables transmitted. RPM and speeds (vehicle, individual wheels), as well as a whole host of other DSC data are already on the CAN bus. I’d say the most useful to add would be relative opening, lambda integrators and the engine and ambient temperature/pressure parameters that aren’t already on the CAN bus somewhere else. Honestly they might all fit in a single CAN transmission.

edit: here’s a json config file that you might enjoy perusing because it has all of the CAN values I log in it

Yeah I've been looking most closely at the lambda integrators and RO, as you say the additional temp/pressure params would be good as well. Only other thing I realised is the lambda functions at least are executed on the Slave CPU and I'm not sure yet whether they are sent to the shared bus/memory space for the Master CPU to access. If they aren't that will be another complexity to figure out as I haven't dived into exactly how that shared bus/memory space works and if there's any room left on it.

Thanks very much for the config file - that's very useful!

[Bry5on]

Hell yeah! This reads like I felt.

Did you get through high load, low rpm testing? Specifically around 2k rpm? There might be a gem waiting for you to discover.

Those were also my thoughts exactly on how to get more CAN variables transmitted. RPM and speeds (vehicle, individual wheels), as well as a whole host of other DSC data are already on the CAN bus. I’d say the most useful to add would be relative opening, lambda integrators and the engine and ambient temperature/pressure parameters that aren’t already on the CAN bus somewhere else. Honestly they might all fit in a single CAN transmission.

edit: here’s a json config file that you might enjoy perusing because it has all of the CAN values I log in it

config-11-20-24_moreCAN_clean.txt

[karter16]

I was back to work this week running v5 of my tune with 5 rounds of VE tuning on top of it. It's given me the opportunity to drive a familiar route and get some good comparisons, as most of my recent driving has been VE tuning runs.

Firstly - low rpm, round town drivability is now, believe it or not, BETTER than it was for me with stock airbox and stock program/tune! (to be fair I also cleaned the TBs, ICV, etc. at the same time so need to consider the impact this will have had also). Needless to say I'm extremely happy with how this is turning out. Drivability concerns are what put me off doing the CSL airbox for so long, so I'm stoked that this approach has turned out so well. I'm not sure if it's that just my car wasn't completely happy with the standard 1901 tune my car came with or what, but I guess I'd got used to avoiding certain RPMs at certain loads and speeds and all that is gone. I can cleanly and smoothly run up and down the range in first gear in stop start traffic, I can stay in higher gears at lower speeds than I would have and it's smooth sailing. SMG shifts and downshifts are excellent and repeatable. On the euro software (both with and without the CSL255 parameters) I couldn't be completely confident that I wouldn't get a bit of a jolt sometimes downshifting from 2nd to 1st with my foot off the accelerator. Now all that is gone completely. Not to make out that there aren't still improvements I can make, there's a couple of rpm/load spots I need to smooth out some more, but there's not many of them left at this point. Another scenario I often encountered previously was the tendency for the car to jerk under anything more than mild acceleration for the first 30 seconds or so after startup when completely cold. That's gone as well and drivability is smooth from completely cold.

When starting out with this I would have been stoked to have ended up with the drivability being no worse than it was on the Euro tune, to have ended up with something even better is magic. I'm looking forward to continuing to fine tune.


Relatedly I've been making some good progress with disassembly and have started looking at options around pushing more useful values onto the CANBUS. Looking at the address tables, functions, etc there doesn't seem to be any particular reason why it wouldn't be possible to add a function for an additional ARBID to be inserted onto the bus. If given an appropriately low priority ARBID it shouldn't get in the way of more critical signals. The bit that would be most difficult to figure out (apart from the bit where you DON'T brick your DME) is the easiest way to inject the additional function call into the flow. Looking at the 10ms task it would probably be easiest to take an existing function, move that function and use it's original address to build out a new function that calls both it and the additional function for the new ARBID. Unless I can find some spare bytes somewhere to inject an additional JSR (no doubt there's others here with more skills than me at identifying injection points for patches, so sing out if you have any suggestions). Other pre-reqs to this include tracing the variables that would be useful to send (things like lambda integrators, rpm, relative opening) and following the program flow to confirm the actual internal refresh rates for those variables (some of these are defined in the funktionsrahmen, but some aren't so I'd like to confirm for peace of mind).

[M3Garand]

This is a nice clean build

[proto.corsa]

Killer build.

[0-60motorsports]

The only one I've seen is this closeup Tom shared on cslregister: http://www.cslregister.com/forum/showpost.php?s=e577eebadd58ef42641b29ff5af9ace1&p= 202139&postcount=5

Oh yeah thats pretty bad! Thanks for the reply. I am trying to see who can locally print me your adapter in the right material. Thanks for that design!

[karter16]

Does anyone have a picture of the new part number 12528091765 installed on the CSL rail?

The only one I've seen is this closeup Tom shared on cslregister: http://www.cslregister.com/forum/showpost.php?s=e577eebadd58ef42641b29ff5af9ace1&p= 202139&postcount=5

[0-60motorsports]

Hey so just again with the caveat that I haven't done this yet, and what I'm doing is just based on my own research (I am not an expert).

Yeah that's my understanding. The original CSL MAP sensor (13627833561) is ideal but is NLA. The BMW replacement (12528091765) is a bit of a hack job and an aesthetic disaster. As you note the discussion on CSL register identifies 0261230101 as a possible replacement and I've decided to go down that path. It should be noted that in that discussion Tom notes that the nose on the sensor is approx 1.5mm too long. The sensor also has 1x mounting hole rather than 2. Once I have the parts in hand I plan to check this, and if it is indeed the case that it needs to be stood off slightly, I intend to CAD design a spacer which the sensor can be glued to to hold it in the right position. If this works out then yes, I think it will be a better option than the BMW replacement item, but that depends on me being able to make it fit properly.

Does anyone have a picture of the new part number 12528091765 installed on the CSL rail?

[wahsm]

FYI (in particular ugaexploder and wahsm) I've published the STL for the MAP sensor adapter - new post in the sticky: https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/271707-e46-m3-community-designed-cad-files-master-list?p=290245#post290245

Much appreciated, thank you!

[ugaexploder]

FYI (in particular ugaexploder and wahsm) I've published the STL for the MAP sensor adapter - new post in the sticky: https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/271707-e46-m3-community-designed-cad-files-master-list?p=290245#post290245

really appreciate it, can’t wait to get it installed!

[karter16]

FYI (in particular ugaexploder and wahsm) I've published the STL for the MAP sensor adapter - new post in the sticky: https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/271707-e46-m3-community-designed-cad-files-master-list?p=290245#post290245

[Kipjames3]

Hey I do indeed - yes correct, the Titan Shadow trim is what came on the CSL (and what my car was originally spec'd with) - however my car is a RHD so unless you're also RHD the part numbers will be different:

RHD parts are:

Genuine BMW Bottom panel, storage partition, Titan	51167904342
Genuine BMW Decor strip,paint. tita.,instr.panel lft	51417904349
Genuine BMW - Decor strip,paint.tita.,instr. panel ri.	51457904350
Genuine BMW Decor str.,paint. tita.,instr.panel cntr	51457904352

If you search RealOEM for LHD M3 CSL you'll get the correct part numbers for an LHD.

Oh yeah I forgot you can search that way on there. I just always put my VIN in. Thank you!

[karter16]

Do you have the part numbers for the titan shadow shifter trim and dash trim kit? I'm trying to replace my brushed aluminum interior to a CSL lookalike trim and having a hard time figuring out the difference between the titan shadow trim and the titan trim. Yours looks to be what came in the CSL unless I'm incorrect in thinking that's what the CSLs came with.

Hey I do indeed - yes correct, the Titan Shadow trim is what came on the CSL (and what my car was originally spec'd with) - however my car is a RHD so unless you're also RHD the part numbers will be different:

RHD parts are:

Genuine BMW Bottom panel, storage partition, Titan	51167904342
Genuine BMW Decor strip,paint. tita.,instr.panel lft	51417904349
Genuine BMW - Decor strip,paint.tita.,instr. panel ri.	51457904350
Genuine BMW Decor str.,paint. tita.,instr.panel cntr	51457904352

If you search RealOEM for LHD M3 CSL you'll get the correct part numbers for an LHD.

[Kipjames3]

My order from EMIAuto arrived earlier in the week after a bit of a delay at Customs (turns out if you read the invoice properly and pay the correct amount it tends to speed things along).



It does not disappoint!




It's a nicely made piece, it's a soft felt on the outside with firmer layers inside to hold the shape, with the sound material in the core. I haven't got the scales out yet but its weight feels to align with what RealOEM quote. As you can see in the photo it comes with cutout flaps for accessing the fuel pumps. Nicely the cutouts aren't quite complete so there's some little tabs that hold it all in one piece, that you can easily cut with a knife if you need to access the fuel pumps.







I haven't done a full fitting yet, but I did have time the other day to do a quick check, and it looks to fit well. The only thing I wasn't able to completely validate without removing the rear seats completely was whether the isofix fittings fit through the existing cutouts. I'll check this when I have some time to get everything out of the rear bench.










The other exciting parts of the package were the bits and pieces that I needed to install the CSL centre console that picked up a couple of months ago. I had some time yesterday in between renovations and plastering and got to work removing the existing centre console. Step 1 being to remove the driver's seat.





Removing the centre console is straightforward, you just have to remove enough of the trim pieces and inserts to get to the screws holding the rear of the console down.










My console had, at some point, been leather wrapped, and whoever did it actually did a nice job of it, it looks and feels good and is much better that what I imagine the soft-touch plastic would look like by now. The flip side to this is that some of the inserts were a bit difficult to remove due to the extra thickness of the leather. On the inside of the console there is also a fair amount of over-spray of the adhesive that they used to affix the leather (not that this affects the end result). Once the gear selector trim is lifted and unscrewed as well, lifting up the handbrake boot means you can then remove the trim at the back of the console and then lift the whole thing up and over the arm rest. This then means you can access the bolts for the arm rest.








Once the three bolts are removed (being careful not to lose the metal collars which are loose) the arm rest can be removed. I took this opportunity to then give the whole thing a good vacuum.







The module resting on the carpet is the "genuine bluetooth module" which, given I don't use it, I took the opportunity to remove it and wrap up it, and the connector for the rear ashtray light in the soft wrap that the phone wiring is wrapped in. At the same time I installed the new bracket for the CSL/arm rest delete console.







With this done I was able to get on to the exciting bit of fitting the console! Prior to this, and not photographed, I took the mirror control and hazard light switch units and spent some time going over them with some wet cotton buds to clean them up and get all the dust and grime out of them that tends to accumulate over time. The other thing that I needed to do as part of fitting the console was make some space for the depth of the hazard light switch by depressing the carpet underneath it. If you don't do this the carpet will offer too much resistance and pop the hazard light switch back out again.

With the console in place the next thing was to replace the gear selector trim with the new titan shadow trim I ordered. The car was originally spec'd with this, and at some point it has been replaced with silver trim, which is in excellent condition and very nice, but I wanted to go back to the original colour. While I was doing this I gave the window controls the same cotton bud treatment. It was at this juncture that I discovered that what I thought was a spec of cola on one of the buttons does in fact appear to be collateral damage from when the contents of the rear view mirror leaked out (prior to my ownership). This is a shame as it is corrosive and can't be cleaned off the switch, so I'll need to order a replacement. Fortunately it has only affected one of the two switch units.










Once that was done I was able to reinstall the trim. Almost done!




Last thing for the console was the installation of the new boot. This is straightforward, just use the factory procedure of cable tying it on and then fit it in place!

The last work for the day was to replace the 3 other dash trim pieces. This is easy if you have a set of trim removal tools and in no time I was done and had the driver's seat back in.










I'm very happy with the end result. The CSL console very much suits the seats. I have a couple of things left to do to finish that particular project entirely.


1: The mirror control switch currently isn't wired in. With everything that I do with this car I want to make it easily reversible (why I don't know as I intend to keep the car for a long time) so rather than just hacking the existing wiring I'm working on building an extension harness to extend the wiring from it's current location in the driver's door back to the centre console. I wanted to actually move the console and check the mirror control switch before I ordered the parts for this side quest.

2: I need to order some foam-backed 9002 Alcantara to manufacture a copy of the OE tray-insert in the centre console (since these are NLA).

Speaking of NLA, the titan shadow trim I ordered was manufactured in late 2004! Which is interesting and really highlights that with these cars now being 20 years old, when the spare parts run out a lot of these sorts of projects are going to become astronomically more difficult.

Anyway, a good little project for a Saturday. When I get the time, Christmas probably, I'll get into the next steps on sorting out the rear seat!

Do you have the part numbers for the titan shadow shifter trim and dash trim kit? I'm trying to replace my brushed aluminum interior to a CSL lookalike trim and having a hard time figuring out the difference between the titan shadow trim and the titan trim. Yours looks to be what came in the CSL unless I'm incorrect in thinking that's what the CSLs came with.

[heinzboehmer]

Yeah fair point re resolution/sample rate. I'll have a look into the CAN functions when I get home next week - that would be pretty cool!

Oh man that would be awesome. I still haven't had time to look through your disassembly and see if I can help out with anything. Real work has kept me busy

Definitely post about it if you find anything interesting! Should be motivation enough for me to find some spare cycles and contribute.