His point was that final drive has absolutely no impact to functionality.
Discussion about issues encountered whilst converting to M3 Flash and GWS
- Thread starter aus335iguy
- Start date
His point was that final drive has absolutely no impact to functionality.
Did he say what made it different in a M3 (TCU software, DSC) as opposed to our 335is's where a final drive change screws everything up?
I went ahead and picked up a dsc module as well should have it by the end of the week hopefully.
Same. I'm tired of dicking around and just got a DSC, a KOMBI, and 4 wheel speed sensors. Evidentally the wheel speed sensors are different on the M3 so if you use the DSC from an M3 you have to swap your wheel speed sensors too.
So far:
Hardware Installed:
M3 GWS
M3 Center Console Trim
M3 GWS Plug
M3 Drivelogic Switch
M3 Drivelogic Plug
Hardware Pending Install:
M3 Rear Diff (3.15)
M3 Axles
M3 Driveshaft
M3 KOMBI
M3 DSC
M3 Wheel Speed Sensors
Potentially required hardware:
M3 SZL (clock spring, potentially needed for adjustable launch control)
M3 Lateral G Sensor (should be the same as the 335is one...)
VO:
Remove 335is DCT Code
Add M3 DCT Code
Add M3 MDrive Code
Flashing:
Flash EKG (transmission)
Coding:
CIC
DSC
KOMBI
He doesn’t know specifically what in the DSC is changed however the car he built has it and works.
Exactly. He commented that he didn't have a lot of free time. So he didn't do things step by step to see what modules contributed to what feature/bug.
He took a 335i 6AT that was putting 600hp down then converted it to DCT, with a 3.85 M3 Diff (from the 2.56 to 3.85), with all the associated M3 modules I posted in the post just a bit ago. Did it all in one big giant job and everything worked flawlessly. He said the only piece that gave him problems was active cruise control but he worked through it.
He said he's really concerned with how long the drivetrain in that customer's car will last because with 600hp and a LSD 3.85 with the GTS DCT flash the shifts are brutal and it feels like the car is going to pull the wheels off the ground at any give moment.
The rear wheel speed sensors are the same between the M and non M. The fronts on the other hand are not. M front wheel speed sensors are p/n 34527853586.
Well darn. It's ok, I got them 2nd hand and for $30/ea so no big loss and now I have 2 spare rear speed sensors.
On another note...off to go perform an oil change and upgrade the fuel lines with the added flex fuel sensor
. I'll post some pics of that in my build thread.
Has anyone tried @TireDeathRacing suggestion about KOMBI coding ?
I’ve looked and saw a diagram where the KOMBI passes DSC info onto the SMG in e46 M3s. They are dramatically different I know but in terms of implementation and design they have been shown as similar. I can’t find the same diagram for e9x
I’ve looked and saw a diagram where the KOMBI passes DSC info onto the SMG in e46 M3s. They are dramatically different I know but in terms of implementation and design they have been shown as similar. I can’t find the same diagram for e9x
@aus335iguy I compared my KOMBI coding to the posted M3 ones and all my values match that actually exist. The M3 KOMBI has additional values though...so I *think* I've gone as far with KOMBI coding as I can given the hardware differences.
EDIT: This was also the reason I bit the bullet and bought an M3 KOMBI
EDIT: This was also the reason I bit the bullet and bought an M3 KOMBI
Also, the Z4is has a similar DSC to Ms.
Again, it’s the only N54 that was designed from the factory as a quasi m car with DCT. I really think that its worth delving into
Again, it’s the only N54 that was designed from the factory as a quasi m car with DCT. I really think that its worth delving into
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Sorry, What I think what he meant was that putting the KOMBI back to 335i spec away from any M3 settings might yield a result. Ie when the KOMBI is showing incorrect RPMs...
Ah, going back to factory 335i KOMBI coding. I can do that since I have an M3 KOMBI inbound and hot swapping between them would be simple enough.
i have a hunch that the sensors are only different mechanically and electrically they may be the same. The way they mount to the M3 knuckle may be the reason they have differing part numbers. Or BMW just wanted to make more unique M parts to clog up the list of different parts us retrofitters need to buy.... one or the other.
It's hard to tell from the pics online but they look pretty similar. It is interesting that the rears are the same along with the yaw sensor but these are "different". I went ahead and bought the two front ones new for under $100 shipped anyways. Just add it to the total. My parts list has expanded exponentially lol.
BTW, if anyone is interested in a 2.81 ring and pinion that will work in a large case 210mm M3 diff let me know. My guy has one available right now and can probably get more. He said the 2.65 is the unicorn of 210mm gears, very hard to come by. I think I know where some are but have no idea what it would cost to buy one.
Same here. I probably have enough parts sitting inside my office at home to take me a month to install it all. As I see a good deal I jump on it. But I've become extremely determined to get this M3 conversion working now that I know it is possible.
$300 shipped. Diffsonline has their used ones starting at $500 and that's if he even has one. I got mine yesterday. Looked in excellent condition, teeth were all good, no obvious wear. Found a place to get the elusive pinion bearings as well. The only other place I found in the US was Diffsonline and the pair was $260 plus shipping. I found them for $100 cheaper.
Tom from Brintech is about to join the forum. Heads up @doublespaces he needs to come here said he’s made a discovery he wants to share. What a top bloke. I’m snowed under with work I’ll check back in later if I can
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