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      06-14-2015, 09:13 AM   #23
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Not specifically. I plan to just leave it unplugged. It's too much time and money to make it work. I am looking for a low mileage rack right now and will report back after the swap.
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      06-14-2015, 05:41 PM   #24
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I'm wondering how this will work with the stability control system? I had my car in the shop recently and they reset the computer with the wheel turned and it killed the entire stability control system (car thought it was going at a different angle).

If it reads off the steering rack: perfect. If it reads off the steering column it may be a bit off when you change the speed.
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      06-15-2015, 03:09 AM   #25
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Quote:
Originally Posted by fboutlaw
I'm wondering how this will work with the stability control system? I had my car in the shop recently and they reset the computer with the wheel turned and it killed the entire stability control system (car thought it was going at a different angle).

If it reads off the steering rack: perfect. If it reads off the steering column it may be a bit off when you change the speed.
Most likely I'll have to have the steering angle sensor recalibrated, but that's expected and from what my tech is saying may not be required. If the alignment is redone at the time of install, the car won't realize the change. Also he's looking into a way to program ///M dynamic mode into my non m car. He says it's possible but he's not sure what hardware would be required. I'll have an answer to that shortly.
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      06-19-2015, 03:51 PM   #26
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Looking forward to hearing more about this retrofit, I've been looking for options for a faster rack as well
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      06-24-2015, 11:17 AM   #27
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did you had any centering problem with the M3 rack?

I had to cut the centering tab and insert the pinion in another angle....
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      06-24-2015, 11:17 AM   #28
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Still sourcing the rack. Haven't done it yet.
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      11-27-2015, 01:27 AM   #29
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Quote:
Originally Posted by ApexResistance
Still sourcing the rack. Haven't done it yet.
Did you ever make any progress on this (either the steering rack retrofit or the MDM coding)?
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      11-27-2015, 02:21 PM   #30
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Originally Posted by Bimmer-Bob View Post
Did you ever make any progress on this (either the steering rack retrofit or the MDM coding)?
Steering rack is a direct bolt in. The MDM is a no go. According to my coding guy. The servotronic stuff can be wired to be on all the time, if you want it. Im still waiting to install mine since I had to move from Germany to the U.S. before I could get everything situated.
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      11-27-2015, 03:56 PM   #31
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Quote:
Originally Posted by ApexResistance
Quote:
Originally Posted by Bimmer-Bob View Post
Did you ever make any progress on this (either the steering rack retrofit or the MDM coding)?
Steering rack is a direct bolt in. The MDM is a no go. According to my coding guy. The servotronic stuff can be wired to be on all the time, if you want it. Im still waiting to install mine since I had to move from Germany to the U.S. before I could get everything situated.
So you sourced a rack and are just waiting to install it? If so, definitely let me know what you think - this is on my wish list of projects.

Do you know anything specific about the Servotronic retrofit? I saw a kit on RealOEM, but don't know anything about it - is that what you were talking about? Or you mean just wiring the Servotronic with an input for constant (non-variable) assist? Speaking of which, I thought our cars already had variable assist steering - isn't that same thing?
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      11-29-2015, 12:58 AM   #32
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Quote:
Originally Posted by Bimmer-Bob
Quote:
Originally Posted by ApexResistance
Quote:
Originally Posted by Bimmer-Bob View Post
Did you ever make any progress on this (either the steering rack retrofit or the MDM coding)?
Steering rack is a direct bolt in. The MDM is a no go. According to my coding guy. The servotronic stuff can be wired to be on all the time, if you want it. Im still waiting to install mine since I had to move from Germany to the U.S. before I could get everything situated.
So you sourced a rack and are just waiting to install it? If so, definitely let me know what you think - this is on my wish list of projects.

Do you know anything specific about the Servotronic retrofit? I saw a kit on RealOEM, but don't know anything about it - is that what you were talking about? Or you mean just wiring the Servotronic with an input for constant (non-variable) assist? Speaking of which, I thought our cars already had variable assist steering - isn't that same thing?
Yes I have the rack and pinion. My car doesn't have variable assist power steering. It was an option on the 1 series but I don't know from what year onward. I don't plan to do the servotronic retro fit anyway so for me it's install the rack, code the steering angle sensor ( I was told I would have too) and get an alignment. The steering angle sensor thing is due to the m3 rack having to be 1 spline off center or something due to a different spline offset or something. I'll know more when I can do a side by side.
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      12-07-2015, 08:20 AM   #33
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Quote:
Originally Posted by ApexResistance View Post
Yes I have the rack and pinion. My car doesn't have variable assist power steering. It was an option on the 1 series but I don't know from what year onward. I don't plan to do the servotronic retro fit anyway so for me it's install the rack, code the steering angle sensor ( I was told I would have too) and get an alignment. The steering angle sensor thing is due to the m3 rack having to be 1 spline off center or something due to a different spline offset or something. I'll know more when I can do a side by side.
Steer full left then steer full right, isn't that the procedure to calibrate the steering angle sensor ?
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      12-30-2015, 09:07 PM   #34
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Ok so I have an update. The Steering rack fit 100%. Direct bolt on, all lines and fittings are the same.
My issue. The steering rack I have, leaks. Alot. It's not coming from the lines, or the fittings on the rack, but on both ends. It's enough I reinstalled the stock rack until I can source another one. The steering angle sensor didn't throw a code either. It wasn't installed very long since it leaked all of the power steering fluid out after a mile or so. There was a solid line down the street. Once I source another rack, I'll reinstall and post some pics. Sorry for the lack of updates on this, I actually forgot about this thread. Cheers.
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      12-31-2015, 08:15 AM   #35
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Check out the PM I sent you.
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      01-04-2016, 02:48 PM   #36
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Quote:
Originally Posted by ApexResistance View Post
Ok so I have an update. The Steering rack fit 100%. Direct bolt on, all lines and fittings are the same.
I assume you have M control arms. Did you use M Tie rods or nonM tie rods?
How long did the install take?
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      01-04-2016, 09:07 PM   #37
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Quote:
Originally Posted by andrey_gta View Post
I assume you have M control arms. Did you use M Tie rods or nonM tie rods?
How long did the install take?
I had unistalled, and installed, then uninstalled, and installed all in 2.5 hours. It was a mess lol.

I have the ///M control arms, and I used the Non M tie rods. They looked exactly the same, they are the same length, and I couldn't see a difference. My OE tie rods looked better.
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      01-05-2016, 07:25 PM   #38
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Appreciate the time and effort you're putting into this Apex. I'm really curious to see the outcome here. Once the suspension is sorted I really think a faster rack and an lsd are the last pieces to make the car a true sports coupe.
I actually reached out to Turner here in MA today to get their opinion on the rack swap. The tech doesn't believe they have ever done the swap but they are researching for me now.
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      01-07-2016, 02:47 PM   #39
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Quote:
Originally Posted by 850tgul View Post
Appreciate the time and effort you're putting into this Apex. I'm really curious to see the outcome here. Once the suspension is sorted I really think a faster rack and an lsd are the last pieces to make the car a true sports coupe.
I actually reached out to Turner here in MA today to get their opinion on the rack swap. The tech doesn't believe they have ever done the swap but they are researching for me now.
It's 100% doable. The trick is finding a solid rack and pinion that doesn't leak lol. I have a new rack, but I'll have to wait till after I move to reattempt the install.
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      01-07-2016, 03:06 PM   #40
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Quote:
Originally Posted by 850tgul View Post
Appreciate the time and effort you're putting into this Apex. I'm really curious to see the outcome here. Once the suspension is sorted I really think a faster rack and an lsd are the last pieces to make the car a true sports coupe.
I actually reached out to Turner here in MA today to get their opinion on the rack swap. The tech doesn't believe they have ever done the swap but they are researching for me now.
Agreed.

Quote:
Originally Posted by ApexResistance View Post
It's 100% doable. The trick is finding a solid rack and pinion that doesn't leak lol. I have a new rack, but I'll have to wait till after I move to reattempt the install.
My main concern is the fact the the M3 rack is Servotronic. Did you get any indication of how bad steering effort would be at low speeds, or do you think it would be too hard to say given the state of the rack you fitted?
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      01-07-2016, 03:45 PM   #41
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Quote:
Originally Posted by Bimmer-Bob View Post
Agreed.



My main concern is the fact the the M3 rack is Servotronic. Did you get any indication of how bad steering effort would be at low speeds, or do you think it would be too hard to say given the state of the rack you fitted?
I didn't notice a huge difference. it wasn't enough to go "whoa, that's different"
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      01-13-2016, 08:47 AM   #42
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Thats what a few people have said so far that it is relatively okay to get used to.
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      07-03-2016, 04:17 PM   #43
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any updates on this, I would really like to do this this winter.
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      07-03-2016, 10:27 PM   #44
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any updates on this, I would really like to do this this winter.
From what I've read on babybimmer was that there was slight modification on the steering rack for fitment. Everything is PnP, with the exception of Servo. The person did mention under 40MPH, the wheel was super stiff to turn, but it loosens up after 40+.

I'll be doing the steering rack retrofit soon after I finish up with my 1M conversion Will post more details on my build thread!
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