09-16-2015, 04:44 PM | #1 |
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6MT and Sport+ from a dig
I've been happily heel/toe'ing for many years. I've had a few BMW manuals before my current M4. Over the last ~year or so, I've noticed that in sport+, it's just harder to get into first smoothly (from a standstill). When I first got my car, I used only sport for a while, and when I started doing everything sport+, I thought maybe I'd lost some timing/feel with the clutch, or maybe the throttle was just very twitchy in this mode and was throwing me off. But I'd go back to sport, or even drive other manuals, and things would be smooth. I tried staying with sport+ all the time to see if I could get a better feel, but it was still a bit hit or miss. [I tend to feather or squeeze the pedals; also, I didn't notice much of a difference after the car was warmed up] Anyone else notice a similar thing? BTW, to clarify, this is just from a dead stop; once the car is rolling at any speed, the rest of the shifts are all good. Also, for full disclosure, I have the BMS clutch stop and the M-performance shift knob, but those made things subjectively better, not worse.
Last edited by RocketBoots; 09-16-2015 at 04:55 PM.. |
09-17-2015, 07:35 AM | #2 |
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Get rid of the clutch stop. Or at the very least adjust it down.
Your clutch is adjusting to it wearing out and over time the bite point will change locations. You are not allowing your clutch pedal to fully disengage the clutch. I'm no mechanic, but this is probably wearing your clutch quickly. IMO clutch stops are ridiculous anyway. Walter Rohrl didn't need no stinking clutch stop. |
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09-17-2015, 09:44 AM | #3 |
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Self-adjusting clutch (SAC) says probably not.
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09-17-2015, 09:47 AM | #4 |
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Whenever I drive in Sport+ with my 6MT I do have to be more deliberate w/ my actions such as the way I ease off on the clutch and my throttle input but it doesn't make it any less smooth than driving in Comfort or Sport. If you were both blindfolded and deaf in my car you would think it had an automatic transmission. It's just that easy to drive this car. I also have the clutch stop and it has made driving the car about 20% easier.
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09-17-2015, 01:30 PM | #5 |
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I only drive in sport+ in my 6MT but have had no issues getting into first at a standstill. Once in a blue moon it does stick and letting out the clutch in neutral and then trying again fixes it. But this is something I've experience in every manual car I've owned (4 others before the M3).
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09-17-2015, 05:17 PM | #7 |
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OK, so I removed the clutch stop. It's definitely much better. Perhaps it's because I've never used a clutch stop before, or that the car was designed to have a little more clutch travel, or (most likely, in these types of cases) user error, but I can get going a lot smoother, and just as fast when wanted.
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09-17-2015, 05:40 PM | #8 | ||
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09-17-2015, 06:33 PM | #9 | |
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Right. My bad.
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Yes, I'll try the clutch stop back after a while. After all, I was pretty happy with it at first, and thought it made the shifts faster/easier. I must say though, one thing I never liked was the slight mush feeling of the stop, compared to OEM. The clutch stop uses a kind of foamy rubber, whereas the OEM has a solid, hard rubber, and so feels more, well, solid. |
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09-17-2015, 07:42 PM | #10 | |
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09-17-2015, 07:47 PM | #11 | |||
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It's not that we are confused about how to take off, or how to operate a clutch, we just have really shitty passengers.
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09-17-2015, 08:19 PM | #12 |
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I always throw it into second and then first. It's a habit from my old old car. It didn't like to go into first unless I hit reverse or second first.
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09-17-2015, 08:24 PM | #13 |
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09-17-2015, 08:29 PM | #14 |
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09-17-2015, 08:29 PM | #15 |
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My service tech suggested this on those hard cold start days. Reason being The syncros are smallest into first and can be problematic if the tranny is not warm.
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09-17-2015, 09:07 PM | #16 |
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question (since this is a 6mt thread). What rpm do you guys like to launch at? I only have 700 miles on it so I haven't really played with the launches yet. The last daily driven manual I owned was in 2004 and it was a 1989 GT-R. You could pretty much launch it at any RPM and it would love it.
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09-17-2015, 10:37 PM | #17 | |
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09-17-2015, 10:50 PM | #18 | ||
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Still, I stand by with the most informative part of that post: We wouldn't give a shit, we just need nicer passengers.
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09-18-2015, 02:19 AM | #19 |
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Drives: Cayman GT4, 135i
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I've noticed that heel toe and blipping the throttle on this car requires a more deliberate amount of gas compared to my precious car (335is). Anyone else notice that?
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09-18-2015, 02:24 AM | #20 |
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Yeah, I installed it today but took it out too because of that! It feels something not quite satisfying.
Last edited by MyFragileHalogen; 09-18-2015 at 03:06 AM.. |
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09-18-2015, 01:56 PM | #21 |
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hmm...stange I had the exact opposite reaction. My last car was a 6MT F30 335i. The F80 definitely has a more sensitive throttle. I can barely tap it with the ball of my foot and it will blip the throttle.
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09-18-2015, 11:29 PM | #22 |
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I have no issue with starting out smoothly from stop on sport+, but I rather am trying to figure out how to launch this car. This is my first MT car since I entered the world of performance cars. Having said that, dumping clutch seems easiest, (although car will not moving anywhere a while with rear wheels spinning), but I don't think that is good way for longevity of my car; so let me dump this method. Then, when I try to launch more smoothly, even after I think I engaged the clutch, car will kind of roll a bit until it puts down the power on the wheels. I feel it a bit strange.
Secondly, with lack of help from this fall weather where tires never warm up, I end up getting power cut down a lot on MDM mode. Sometimes it's like 2 seconds that the car won't let me accelerate on 1st/2nd gear. I thought about DSC off, but after seeing the intervention kicks in on 3rd gear at 70 mph as car tried to turn right, I think I will not ditch the protection for a while. Any advice? Next I am thinking about progressively increasing throttle input. Yet, I don't regret not opting for DCT. The ZF 8speed sport tranny on F30 was quite impressive, but this 6MT is a whole different level of fun, even tho I can't yet properly launch the car lol. Last edited by MyFragileHalogen; 09-18-2015 at 11:35 PM.. |
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