08-21-2020, 02:19 PM | #67 | |
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I have often wondered if this is the CDV, and if it is, it's damn worth replacing to get rid of it. |
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08-31-2020, 09:32 AM | #68 |
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So everyone's pedal has firmed up and no regrets? I've removed the CDV in my last 4 BMWs but I've yet to do it to the M2. Planning on having a shop do the job later this month.
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08-31-2020, 10:06 AM | #69 | |
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I had the UCP paired with CDV delete on my e46 M3. It felt good because it was different. However, I wouldn't do it again. The stock CDV is there to engage the drivetrain without introducing shock. And while this can be annoying, I only found it so in the beginning. Once I got used to it, I didn't think twice about it. I've driven manual cars for over 20 years and I personally think that the CDV is a nice precaution to have. I believe it will prolong the life of the flywheel even amongst experienced drivers. A properly functioning valve should be undetectable under normal driving and only showing up when you get abusive with the clutch. When I give my best to shift smoothly and properly, I can't even tell that a CDV is there. It's my understanding that CDV allows the dual mass flywheel a soft engagement to prevent the flywheel from bottoming out and damaging the ears that press against the springs. |
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08-31-2020, 10:15 AM | #70 | |
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I can accomodate the restrictor in the clutch line by slowing my leg movement so the fluid isn't trying to move too fast but why would I want to do that? |
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08-31-2020, 10:40 AM | #71 | ||
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10-07-2020, 04:56 AM | #72 |
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I've been reading this thread and I think the CDV is the issue here. Can anyone confirm?
In S+ mode randomly when I shift from 1st to 2nd the car would jerk like crazy and you can see the rev bounce between 200-300 rpm or so. I've never had this problem in other gears and in efficient mode and just chocked up to driver error. If this is a CDV issue then I'm definitely gonna do this.. |
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10-07-2020, 08:04 AM | #73 | |
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I drive in S+ mode most of the time once the engine warms up, and this has been the annoyance since day 1. I’ve gotten better at modulating (read: slipping) the clutch, but it gets jerky again once I get careless. |
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10-07-2020, 08:37 AM | #75 |
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It would not, just never mention this mod to them and should any issues arise, just say it came that way🤷🏻
You might not get into Heaven because of your dishonesty or omission but your warranty will remain intact, here on earth... |
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infinitekidM2C4185.50 BMW DIY Guy3001.50 |
10-07-2020, 08:55 AM | #76 |
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So I read this as slave cylinder swap and UCP are mandatory for any m2 comp tuned. SSK is an option after that. I plan on getting the cylinder and UCP done first thing in the spring and then I'll decide on SSK. Now I just need to find the damn post where Thescout13 lists out his perfect UCP settings. I failed on my first search attempt as UCP is referenced a ton on this forum and he posts a lot. I'll give it another go later before I bug him.
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2014 B8.5 s4 6MT Monsoon Gray Metallic/Black Optics/RS Grille/GIAC Stage 1/AWE Touring Exhaust & S-Flo Intake/H&R Sway Bars/Bilstein PSS10 |
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10-07-2020, 10:10 AM | #77 |
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I'm definitely in the minority here, but I didn't like my AS SSK. I had it in both 20% and 30% reduction on prior BMW's paired with CDV delete. I loved them initially because shifting felt very precise and the throws were shortened. However, over time, I realized that the shifter was more finicky than I wanted. It required a lot more effort to get the shifts crisp. Colder weather is when the shifter really struggled and felt a lot more notchy than a stock shifter. Miss-shifts were more common, as well.
The stock shifter on the M2C gets a lot of heat from the SSK crowd, but it's actually an amazing piece. Now I understand why it works and feels the way it does. The little bit of slop is built-in there for a reason. Missing a shift is virtually impossible. It works great and never locks up on me like downshifts with the AS SSK did, especially during hard cornering at autocross. |
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10-07-2020, 10:39 AM | #78 |
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Idk how they would find out????????
Unless they took apart every little piece of the clutch line, and they are comparing each component to images, which they don't/won't know to do.
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Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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10-07-2020, 10:40 AM | #79 | |
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Wife's Car: 2020 X4M Competition, Alpine White on Black Alcantara and Biege
Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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10-07-2020, 12:24 PM | #82 | |
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The AS SSK has an ever-so-slight amount of play; it is definitely more precise and notchy (but isn't that the point?) I would never call the stock shifter 'an amazing piece'. Compared to many other shifters (S2K, Porsche, Miata, BRZ) it's quite rubbery, sloppy, and vague. What I will say is that it's very easy and forgiving though. What he said. The UCP has 3 settings: Stock, Sport, and Race. I had mine on Sport, the middle of the road, for a long time before I was clued in to the Stock setting. Race and Sport can be good, but Stock is just more linear IME. |
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10-07-2020, 06:22 PM | #85 |
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Just buy the e90 part-- it's not outrageous, and there have been a fair number of reports of leaking after the DIY "Drill out" method of the CDV.
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10-07-2020, 07:29 PM | #86 | ||
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10-08-2020, 09:25 AM | #87 | |
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10-08-2020, 10:51 AM | #88 | |
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Not everyone wants a mechanical feeling, notchy shifter. |
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