07-06-2023, 12:50 PM | #45 | |
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I wonder if modifying these values significantly from the factory setting has an impact on shock longevity. |
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abbike18717.50 |
07-06-2023, 01:14 PM | #46 | |
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The only longevity concern that I could think of is heat. Increasing the damping means the oil is being forced through a smaller hole, which increases heat of the oil. I don't think it would be that dramatic though.
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07-06-2023, 06:32 PM | #47 | |
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Do you think the amperage target/damping curve is roughly linear? I.e. in your case did adjusting the sport setting from 900 to 1100 feel like it got ~20% stiffer? |
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07-06-2023, 06:37 PM | #48 | |
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I think where the limit lies is in the fact that you are just turning up the knob with those levels. The logic for when to increase the current remains the same. That's the added benefit of the Dinan Shockware - they change the actual algorithm as well. But in the absence of that offering, this is pretty good. Especially for $0!
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07-11-2023, 03:40 PM | #49 | |
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2019 X3M40i DGM/black vernasca, 2T4, 2VF, ZPX, ZPP, ZDA, DWS06+, etc, etc. Since July'19.
2021 X540i MSport CBM/black merino, 337, ZMP, ZPP, ZPK, etc. Since Dec'20. 2006 330i SGM/black, ZSP, ZPP, 217, HuberOps, M Splits, K Lines, AS 3 on EC-7. Sep'08-July'19. Last edited by prototyp; 08-03-2023 at 04:32 PM.. |
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07-11-2023, 03:41 PM | #50 |
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I did it with an Android using Bimmergeeks ProTool.
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07-11-2023, 04:36 PM | #51 | |
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2 x N54 -> 1 x N55 -> 1 x S55-> 1 x B58
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07-11-2023, 04:39 PM | #52 | |
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You can sure stiffen things up, but obviously recognize that the actual dampers are different on the M version, so it won't be exactly the same. But I've got mine about as stuff as I would actually want it, set at 1300 (0514) all around on sport mode.
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07-11-2023, 04:46 PM | #53 | |
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2 x N54 -> 1 x N55 -> 1 x S55-> 1 x B58
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08-08-2023, 10:13 AM | #54 |
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I installed the X3M rear strut brace a few days ago.
First picture is the required parts: Rear strut brace, 51718077347. I got mine from eBay, used off a crashed car for $190. Left and right brackets, 33308077349/350. I had to order these from Germany, and they are required for the install. They replace parts on the M40i that are smaller and don't have the bottom screw holes/mounting area for the actual strut brace. Rear subframe mounting bolts (2x), 33326760340. The BMW instructions say to renew these screws. I don't always renew when the BMW instructions say to, but the torque on these is 100nm plus 90 degrees and they are major structural bolts, so I replaced them. Strut Brace to brackets (4x), 51718082205. You need these, there is no equivalent on the M40i. Torque is 38nm. Strut brace to chassis bolts (8x), 07149390155. These are optional. There is an equivalent on the M40i chassis, but what comes on our cars are class 8.8 and the X3M uses class 10.9 bolts. Also, the torque on the M40i is 25nm and on the X3M is 38nm. So I decided to upgrade these bolts given the increased stress the brace will see. Install is pretty straight forward and obvious. You do have to remove the torsion link (torque on the big bolts is 100nm plus 90 degrees). I did have to make one small modification to the heat shielding to get the brace to fit through, you can see it in the second picture. A little tin snip action and it was all done. Driving impressions - well first off the sunroof doesn't make a creak anymore every time I back out of my driveway and off the curb. So it is definitely adding some rigidity. Drive wise yes the back end feels tighter and more rigid, possibly making the car feel more balanced as the rear wheels are more where they would be expected to be. Keep in mind I am heavily tuned, turbo upgrade and with the locking diff. I haven't really sent it yet, but if I have thoughts on it will comment here.
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Keefy1655.50 Burr0013405.50 mattsheng994.50 Rottweiler4073.00 g11hoonigan827.00 dinan5m34455.00 COM40470.00 prototyp228.00 JJJBlackSaph8660.00 Alias1431799.50 |
08-08-2023, 02:09 PM | #55 | |
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08-09-2023, 12:29 AM | #56 | |
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I'm sure it is, but from these pictures, the #1 bolts position seem bit off between g01 and f97... So, renew bolt #3's |
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08-09-2023, 09:19 AM | #57 | |
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Technically #1 bolts are also high torque, but I reused them because a failure in #1 bolts still keeps the sub frame on the car, but a failure in #3 bolt and your subframe is flapping in the breeze.
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dinan5m34455.00 |
08-09-2023, 03:53 PM | #58 | ||
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Thinking some more about this logistically,
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The 10.9 M8 bolts, are 28mm versus 25mm on g01 8.8 M8 bolts. Observation that the extra 3mm is needed due to the extra thickness of the f97's rear strut? Quote:
I'm guessing the f97 rear strut just can't be placed "below" the fuel tank heat insulation without the need for snipping. But even with that snipping looks like the fuel tank plastic cover in that area would screw not to the heat shield but to the rear strut. Almost tempted to just go with f97 heatshield, but ... Lol, had to look up what that mean by angle of attack after the torque. Looks like need to pick up a breaker bar. |
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08-09-2023, 04:03 PM | #59 | ||
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I will say that the 100nm plus 90 degrees took some muscle, even with a larger bar, when I was on my back under the car.
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dinan5m34455.00 |
08-09-2023, 04:08 PM | #60 |
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Urgh, this place is bad for my wallet...
Ordered (some optional parts but ...) Strut, rear 51-71-8-077-347 Hex bolt with washer 07-14-9-390-155 QTY 8 Hex bolt 51-71-8-082-205 QTY 4 Push rod left 33-308-0-773-49 Push rod right 33-30-8-077-349 Torx-bolt with washer 33-32-6-760-340 QTY 2 Multi-purpose bolt ASA 07-14-6-878-392 QTY 6 Expanding nut 07-14-7-306-224 QTY 4 Combination Allen bolt 07-14-7-413-212 QTY 7 |
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08-09-2023, 05:06 PM | #61 |
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08-10-2023, 06:55 AM | #62 | |
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Anybody who is interested in this conversion please make sure to buy the bolts listed. It’ll save you a big headache. Pics attached showing before and after. |
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08-29-2023, 11:32 AM | #63 | |
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Is there any reason these would not fit a 2022 M40i?
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abbike18717.50 |
08-29-2023, 12:17 PM | #64 |
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Not that I can think of...I would be surprised if they updated those parts as part of the LCI
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TonM3251.50 |
04-16-2024, 05:31 AM | #65 | |
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Has anyone had success in retrofitting monoballs into Lower Control Arms for G01/02 ?
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Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten:
Current '22 X3M LCI.. |
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04-16-2024, 09:30 AM | #66 | |
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https://syncrodesignworks.com/produc...nt-thrust-arms |
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