[LMB335IS]

Originally Posted by marconi118

I have a complete M3 suspension with brakes and M3 LSD

What do you advise to recode? ediff, brake fading compensation ....?

only temporary before I go the M3 MDM route later this year

Yes. C0F_DIFF_LOCK and C0F_FLR to disable those two.

MDM is a whole different game though. You'll need a custom IMK0S ROM for that to work. So you'd need a MSD 81 (not sure what you have), someone to write a custom IMK0S ROM with the correct checksums onto a non IMK0S ECU, and all the hardware. You can't flash a IMK0S ROM over the top of any other ROM without getting serious errors.

[marconi118]

I have MSD80 so MDM is a no go?
Dont want to upgrade to MSD81...

If I disable C0F_DIFF_LOCK and C0F_FLR and disable DSC with a log press on the DSC button will all intervention of DSC be disabled?
I only need ABS and F/R brake repartition.... I run series M3 brakes with bmw performance pads on front, but still with 335i master cylinder and vacuum brake assistance

[LMB335IS]

Originally Posted by marconi118

I have MSD80 so MDM is a no go?
Dont want to upgrade to MSD81...

If I disable C0F_DIFF_LOCK and C0F_FLR and disable DSC with a log press on the DSC button will all intervention of DSC be disabled?
I only need ABS and F/R brake repartition.... I run series M3 brakes with bmw performance pads on front, but still with 335i master cylinder and vacuum brake assistance

I'm afraid so. You need to have a IKM0S bin (1M) to be able to have MDM and/or MDrive and that ROM was on MSD81.

There's a couple other things you can disable but if you're going to put in a M3 ABS/DSC unit I wouldn't bother. The M3 DSC software has none of the electronic interventions that the 335i software has. Read through this, it outlines most of them. http://www.onelapx1.com/blog/how-to-...w-actually-fun

[BB_cuda]

Originally Posted by tetsuo111

Thanks for this, BB_cuda

You may have saved a big headache here. I understood the M3 toe arms to work with M3 rear spindles AND Non-M rear subframe. Given your guidance, I'll need to revisit those control arms. Thanks.

Any durability challenges using the Bimmerworld adjustable toe arms on the street? I'm less concerned about noise, more concerned about longevity of the bearings without seals on the street.

Could you speak further to your experience using the lower control arms? Specifically, do the M3 lower control arms pair seamlessly with M3-specific dampers and springs? I thought the GC conversion kit is for M3 dampers used with non-M lower camber arms.

Thanks again.

I try to keep a coating of lithium grease on the exposed spherical bearings. I hear there are some boots that could be added on. Bimmerworld would best folks to ask about the boots. I've had the adjustable toe links on for 1.5 years and durability fine so far BUT .... I live in the south and no road salt here and car in garage every night.

No sir. The M3 conversion uses the aluminum lower M3 units. You can buy kit with or without the lower arms. I got mine out of a salvage yard for $100/pair. Kit with arms is $500 extra. The shocks are a bit of a hybrid. They indeed bolt up to the lower camber arms but the tops fit my E90 chassis. I recall that the bump stops up top are E90 specific. You need to call Ground Control and get the straight poop.

There is one minor detail that you need the M3 specific control arm sensor. I got this part from salvage yard still bolted to left arm. Also, an adapter is needed for this sensor to work with the E90 rear subframe. This is another subtle nuance of the M3 subframe. I got this adapter from Harold at HP Autosport. I may have a picture showing the setup.

[BB_cuda]

here are those pictures. first one is the standard E90. look closely at the piece of bent metal bracket that goes between the metal (galvanised color) lower control arm and the black plastic link. that bracket is the E90 one.

2nd picture shows the M3 arm with sensor on it but just laying on garage floor. This doesn't show the finished product of adapter bracket connecting the M3 lower control arm to sensor to E90 frame. There is an upper bracket too. I know i'm confusing the crap out of you now.

I need to remove wheel and show you a finished picture.