[raymix]

I've found shifting from 1st to 2nd requires a lot of effort. I can't still get it as fast as I want, still I have to release the clutch slowly to make it smooth. I'm not sure if it's because my car is not serviced yet or it's just the way it's designed.

[amrk47]

the throttle on sport plus mode helps with the 1 to 2 shift, but its still poor compared to the competition. the manual in the c7 z06 and civic type r i drove it was a night and day difference

[chris719]

Originally Posted by TemjinX2

who would clutch dump a 60k car?

even the motor trend guys say they get the fastest 0-60 times by slipping the clutch.

It doesn't even have to be intentional, but it could happen accidentally with an idiot operating the car. My thought is that they put them in because they have to deal with this worst case driveline shock and don't want to be replacing stuff under warranty.

If anything, the car is easier to stall with CDV installed because your reaction is delayed. It's not a big delay, it's not like an actual anti-stall tactic.

[Karmic Man]

Originally Posted by raymix

I've found shifting from 1st to 2nd requires a lot of effort. I can't still get it as fast as I want, still I have to release the clutch slowly to make it smooth. I'm not sure if it's because my car is not serviced yet or it's just the way it's designed.

Not on my car..I can shift quickly from 1-2, then drop the clutch immediately and then throttle on, all smooth...obviously when in MDM and I dump the clutch at say 4000 rpm in 2nd and then full throttle the rear will wheel spin a bit before settling down

[raymix]

Originally Posted by Karmic Man

Not on my car..I can shift quickly from 1-2, then drop the clutch immediately and then throttle on, all smooth...obviously when in MDM and I dump the clutch at say 4000 rpm in 2nd and then full throttle the rear will wheel spin a bit before settling down

how to shift smoothly from 1-2? what rpm do you shift to get optimum transition?

[Poochie]

Originally Posted by Karmic Man

Not on my car..I can shift quickly from 1-2, then drop the clutch immediately and then throttle on, all smooth...obviously when in MDM and I dump the clutch at say 4000 rpm in 2nd and then full throttle the rear will wheel spin a bit before settling down

You do realize this is a 6MT issue, since a DCT shifts and handles the clutch actuation automatically, even when it feels like it doesn't.

[lower]

Originally Posted by Top pup

By comparison to something like a Z4mc an M2 is almost effortless to drive smoothly, pretty much no different to any regular BMW.

Agreed! My Z4MC was tricky to drive smoothly, particularly 1st to 2nd gear.

The 6mt is very easy to drive.

[TemjinX2]

Originally Posted by chris719

It doesn't even have to be intentional, but it could happen accidentally with an idiot operating the car. My thought is that they put them in because they have to deal with this worst case driveline shock and don't want to be replacing stuff under warranty.

If anything, the car is easier to stall with CDV installed because your reaction is delayed. It's not a big delay, it's not like an actual anti-stall tactic.

well either way for me the cdv isnt a big issue. i drive normally on the street and in the canyons i'm usually in 2nd or 3rd so the 1-2 isnt a big deal.

i'll probably remove the cdv when i replace my clutch down the line.

[chris719]

Originally Posted by TemjinX2

well either way for me the cdv isnt a big issue. i drive normally on the street and in the canyons i'm usually in 2nd or 3rd so the 1-2 isnt a big deal.

i'll probably remove the cdv when i replace my clutch down the line.

I've posted this in multiple threads, but IMO, if the valve is similar to the one in the Z4M, the CDV delete doesn't help at all with the 1-2 shift. It does make the clutch a lot nicer to use in parking, reverse, situations from a dead stop. You don't even realize there is a delay until you drive the car without, but it's a 100-200 ms order delay, not something massive. The Z4M had a clutch with a lot of bite, but the F8x are not like that. I would only do the mod if it's really easy.

[Karmic Man]

Originally Posted by Poochie

You do realize this is a 6MT issue, since a DCT shifts and handles the clutch actuation automatically, even when it feels like it doesn't.

Of course, I have a 6MT

[Karmic Man]

Originally Posted by raymix

how to shift smoothly from 1-2? what rpm do you shift to get optimum transition?

At any rpm and regardless of throttle position...but make sure the shifter is touching the gate on the left while you exert pressure on the shifter from 1-2...after that it will slot in smoothly

I use to grind 2nd gears (even with clutch in) on the M2C when I drive it like other manuels but since I have found it just requires a very particular position when shifting from 1-2 then it will be smooth as butter and no gear grindings since

[VisualEcho]

I never considered my local roads to be bad, but now paying a lot of attention to them I'm sure they are a contributing factor as to why I'm not driving the 1-2 as smooth as I'd like to.

- only had the car a month
- gearing
- CDV
- always using Sport (throttle sensitivity)
- roads

Oh well.

[heavyD^2]

I have no issues with the 1-2 shift. Maybe some of you have transmissions that are close to out of tolerances. This transmission is much more consistent than the Civic Type R transmission which you have to pause the 1-2 shift to avoid grinding.

[Poochie]

Originally Posted by Karmic Man

At any rpm and regardless of throttle position...but make sure the shifter is touching the gate on the left while you exert pressure on the shifter from 1-2...after that it will slot in smoothly

I use to grind 2nd gears (even with clutch in) on the M2C when I drive it like other manuels but since I have found it just requires a very particular position when shifting from 1-2 then it will be smooth as butter and no gear grindings since

Originally Posted by Karmic Man

Of course, I have a 6MT

I'm sorry, I misunderstood and assumed you where referring to a DCT. Carry on

[akkando]

Don't have a 6 speed but I could have sworn in other threads people said the fix was to let the clutch out faster rather than slower for 1st to 2nd? I think that French lady had a thread about it.

[VisualEcho]

Originally Posted by akkando

Don't have a 6 speed but I could have sworn in other threads people said the fix was to let the clutch out faster rather than slower for 1st to 2nd? I think that French lady had a thread about it.

I think the fix is to learn how to drive this particular car. It's such a wonderful experience, but it's not without its quirks, I just have to get used to them.

[Sedan_Clan]

Not at all!

[skier219]

There is not a problem with the 1-2 shift or shifter, it's that the gears are spaced awkwardly for transition from 1 to 2. This is is a mechanical reality and not something people need to work on or try to improve or fix with shifter/clutch/etc.

Here's a plot of RPM versus MPH for each gear. For the sake of discussion, let's say we shift at 5000 RPM. The black dashed line shows the RPM difference between gears at the 5000 RPM shift point -- basically, the change (reduction) in RPM going into the next higher gear at the road speed of the shift. The RPM difference for the shifts are:

1-2 2184 RPM
2-3 1670 RPM
3-4 1177 RPM
4-5 759 RPM
5-6 770 RPM

The larger the difference the more awkward the shift will be. The 1-2 shift has a pretty big difference, almost 2200 RPM. That means if I shift from 1-2 at 5000 RPM, I would have to wait for the engine RPMs to drop by 2200 down to 2800 RPM before engaging the clutch in 2nd in order to get a perfectly smooth shift (try it sometime). In reality, nobody does that -- we go into 2nd sooner, at higher RPM, and that jolts the driveline and makes for an abrupt shift.

The way to minimize this effect (other than waiting for RPMs to drop) is to shift sooner, since the difference gets smaller at lower RPMs. If you 1-2 shift at 4000 RPM, you only have a 1747 RPM difference to 2nd gear. If you shift at 3000 RPM, there's only a 1310 RPM difference to 2nd gear. Obviously you wouldn't do this if you're trying to go fast, but if you're just tooling around town, making a short 1-2 shift minimizes the awkwardness.

[rouxeny]

I stay in sport plus, and have the clutch mod. I found the car easier to shift 2 years in. It also seems a little easier if you’re pushing it some, shifting quick, and getting the power back on quickly. Slow lazy shifts work well in comfort.

[VisualEcho]

More testing coming out of the car wash, very fun, very smooth, just a little bit of knock/hop at the end. I'm starting to think it was mostly new tires. I'll continue to test .

[Fear-Mongrel]

Mine is an absolute joy. You can two-fingertip shift every gear except reverse, and every gear is butter smooth every time. The best part is when you have to crawl, like in traffic, or through school zones, or when we did ED and drove through lots of little villages with tiny streets and kids playing. Some cars aren't fun to crawl in...first is jerky and second gear causes the engine to labor. The M2 crawls so easily in 2nd, they not only got the going-fast part right but also made it easy to live with around town.

[raymix]

This makes perfect sense. Is there any way to make the rev drop faster? I remember 1M rev drops faster than M2, so you have to rev a bit to make it smooth. Probably due to lighter flywheel? Another way I'd think of is to reduce the torque when lift off, it could be done with ECU flash?

Originally Posted by skier219

There is not a problem with the 1-2 shift or shifter, it's that the gears are spaced awkwardly for transition from 1 to 2. This is is a mechanical reality and not something people need to work on or try to improve or fix with shifter/clutch/etc.

Here's a plot of RPM versus MPH for each gear. For the sake of discussion, let's say we shift at 5000 RPM. The black dashed line shows the RPM difference between gears at the 5000 RPM shift point -- basically, the change (reduction) in RPM going into the next higher gear at the road speed of the shift. The RPM difference for the shifts are:

1-2 2184 RPM
2-3 1670 RPM
3-4 1177 RPM
4-5 759 RPM
5-6 770 RPM

The larger the difference the more awkward the shift will be. The 1-2 shift has a pretty big difference, almost 2200 RPM. That means if I shift from 1-2 at 5000 RPM, I would have to wait for the engine RPMs to drop by 2200 down to 2800 RPM before engaging the clutch in 2nd in order to get a perfectly smooth shift (try it sometime). In reality, nobody does that -- we go into 2nd sooner, at higher RPM, and that jolts the driveline and makes for an abrupt shift.

The way to minimize this effect (other than waiting for RPMs to drop) is to shift sooner, since the difference gets smaller at lower RPMs. If you 1-2 shift at 4000 RPM, you only have a 1747 RPM difference to 2nd gear. If you shift at 3000 RPM, there's only a 1310 RPM difference to 2nd gear. Obviously you wouldn't do this if you're trying to go fast, but if you're just tooling around town, making a short 1-2 shift minimizes the awkwardness.