03-06-2019, 10:18 AM | #23 | |
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edit: theres two threads on this the fuckkk |
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03-06-2019, 12:53 PM | #24 |
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It frickin' won't rev match if you are already in the correct rpm range. DOH!
If you are in 2nd gear at 20 mph (for I don't know why), then it won't rev match when you shift to 1. Hope that makes sense.
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03-06-2019, 01:38 PM | #25 |
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03-06-2019, 01:44 PM | #26 |
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The whole point of rev match is to avoid rpm surge when you downshift to a lower gear at a higher speed.
But if you are doing really low speed in a higher gear (very low rpm), downshifting a gear really won't make a noticeable difference in rpm to initiate the rev match because the revs would hardly increase. The rev match is more pronounced when downshifting to a lower gear would cause the rpm to surge in the higher range. Am having a hard time explaining this but the ones who understand this will get it. Cheers.
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03-06-2019, 01:51 PM | #27 | |
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Also, the car will rev match on downshifts no matter how insignificant the rpm difference is. It will always match the appropriate revs to the gear and speed. |
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03-06-2019, 02:55 PM | #28 | |
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I understand gears as well and didn't need the 5-6 overdrive comparison to the 1-2 gear gear change. I know and understand the gear ratios but I was hoping the OP gets the point though i suspect you have confused him further. Nothing more to add here. Blabber along if you must...........
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03-06-2019, 03:25 PM | #29 | |
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OP I also vote for rev hang/rev match. Try in in Sport Plus. |
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03-06-2019, 04:49 PM | #30 |
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It's not rev matching on down shifts anymore, it comes back randomly. For example if I were to exit the freeway, it would match from 6 to 4 and then from 4 to 3 all of a sudden there wouldn't be any rev match.
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03-06-2019, 04:51 PM | #31 | |
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03-06-2019, 05:05 PM | #32 |
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https://f80.bimmerpost.com/forums/sh....php?t=1246479
https://f80.bimmerpost.com/forums/sh....php?t=1192269 These 2 threads pretty much described exactly what I'm experiencing. I don't see a fix lol |
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03-06-2019, 06:37 PM | #33 | ||
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Glad we are on the same page now. |
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03-06-2019, 09:37 PM | #34 |
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Id take it to the dealership to have it documented. They most likely will tell you there isnt anything wrong, but its good to have it documented just in case it worsens in the future.
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03-10-2019, 02:52 PM | #36 |
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This may not pertain to OP issue but in general, I feel there is more rev hang designed on purpose in F8x M3 vs previous naturally aspirated M3s because if revs drop too quickly in a turbo motor, there would be more lag when getting back on throttle after shifting into next higher gear. So I guess having the revs drop more slowly would keep the turbo spinning, thereby reducing turbo lag....
Thoughts..... |
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03-13-2019, 03:44 AM | #37 |
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I have a 16 comp and my clutch feels different all the time. Cold and hot weather change the characteristics of how my clutch engages. I have gotten use to it. I have 40k on my M3 and the last time I went in for servicing I asked them to check it out and they said it was fine. Just drive it until you break it.
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03-18-2019, 03:03 PM | #39 | |
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Took the technician for a spin and he saw it happen once, told me to wait because BMW had some event in Vegas and he's going to contact the head quarters and do some more research in regards to this issue. He said he's seen it before and hates the rev matching feature. |
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03-18-2019, 03:27 PM | #40 |
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I have had o issues, and have 24,000 on the car. I notice when cold sometimes it feels like the clutch almost slips a bit, but it does not slip anywhere, just feels different, that is sometimes when cold. I live in sf bay area so it gets down to 35 degrees sometimes, but the car lives in a garage, only when it sits outside on a cold day.
I also skip shift....no discussion, i just have always done that on every car, and I have had 27 cars to date, mostly manuals. |
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03-18-2019, 04:31 PM | #41 |
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...u guys are honestly wasting your time with these "head shop people" go to a respected indy if u really want your problems fixed...but imo clutches are extremely temperamental; and I believe it has good and bad days; and thats just how it goes owning a manual nowadays.....all your problems are going to be rememdied as...
started car next day no faults found....checked clutch...ok....relubed door hinges...adjusted parking brake.....greeased axle...check problem...ok....washed and vaccumed....customer returns.....reset idrive...problem gone.... around and around it will go....dont get me wrong some shop foremans know their shit; but its getting sickening talking to mechanics at dealerships and they are baffled by simple problems a real mechanic fixes in two seconds... |
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03-18-2019, 04:57 PM | #42 | |
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Last edited by clutchdj; 03-18-2019 at 05:05 PM.. |
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03-20-2019, 04:24 PM | #43 | |
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