[jpnh]

Its just starting to snow......I think I'll go play with the LSD and Autoblip 6MT

[JustChris]

Does the M240i have auto rev matching then? I wasn't aware, thought it was the M2 only? Cool.

Can I ask is it impossible to stall these gearboxes? If you let the revs drop so far, does the computer kick in? Does it therefore almost 'crawl' like the 8AT ZF? That might be a step/wish too far. Hmm.

[B_Rice]

Originally Posted by JustChris

Does the M240i have auto rev matching then? I wasn't aware, thought it was the M2 only? Cool.

Can I ask is it impossible to stall these gearboxes? If you let the revs drop so far, does the computer kick in? Does it therefore almost 'crawl' like the 8AT ZF? That might be a step/wish too far. Hmm.

Yeah the 240 has rev matching. It's possible to stall, but with so much torque available you would have to screw up really bad to do so. If you have the auto start/stop enabled it'll restart for you if you put it back into first gear.

[kaputt]

I actually genuinely like this feature. Does anyone know if BMW has plans to add it to the 230 with the LCI?

[Shovelman]

It revs the engine when I push the shifter into the 1/2 gate, only if the clutch is depressed. Don't think it does anything when dropping from the 5/6 gate to the 3/4 gate. Have to check.

[jpnh]

Originally Posted by Shovelman

It revs the engine when I push the shifter into the 1/2 gate, only if the clutch is depressed. Don't think it does anything when dropping from the 5/6 gate to the 3/4 gate. Have to check.

It does it for all gears

I'm shocked at how well it was implemented

[Shovelman]

Here's how it seems to function;

Notation

N12 means shifter in neutral in the left (first and second) gate

N34 means shifter in neutral in center gate

N56 means shifter in neutral in right gate

There are two things accomplished

A. gears spun up to mesh better with less wear on the synchromesh

B. engine at the right speed for the wheels so there is minimal torque applied when the clutch is engaged.

Move from N56 to N45 the engine is revved to provide A.

Move from N45 to 4 or 5 the engine is revved to provide B.

Move from N45 to N12 the engine is revved to provide A.

Move from N12 to 1 or 2 the engine is revved to provide B.

There is no rev matching when moving into N56

There seems to be no rev matching when moving from N56 to 5 or 6

Correction, there is rev matching when moving from N56 into 5 to provide B.

[Sharkmeat]

For those who have a manual, does anyone else experience an inconsistent “throttle-blip” on downshift with the auto-rev feature in the M240?

I’ve driven a manual my entire life and love the rev-match feature. That said, it seems to only work about 60% of the time and since I don’t automatically blip the throttle anymore with my right foot on downshifts, when the system doesn’t work, it’s VERY noticeable and I look like a noob.

If I am giving the car gas immediately prior to downshifts, the system works 90% of the time. However, if the last action was breaking or coasting (typically at lower speeds - anything less than 40 mph), then the auto-rev feature only works 60% of the time. The car seems to especially get confused in stop-n-go traffic.

I’ve learned a ton on this forum, so perhaps others have experienced similar events that I can learn from.

thanks.

[sectachrome]

Not mad at all that this feature is out there now for people that want it, but I HATE that you have to disable everything in order to turn it off. It should just be a simple preference that you can tick on or off. Not sure I would buy a 240 because of this, and if I did I would probably just get the auto. For me, rev matching and heel toeing is a huge part of the reason I enjoy manual transmissions.

[BentZero]

Originally Posted by jpnh

I was in a similar situation with no MTs within 1000 miles to go drive

It blips as you start to push the shifter into the gate for the next gear

Cant tell you how many revs it blips but its oddly "appropriate".....I'll pay attention next time I get into the car and try to let you know if someone else fails to chime in before then.

It really been odd....it really just "works" and I wouldnt change anything about it.....it really does eliminate the need for heel/toe gymnastics as far as I've noticed so far

That sounds depressing to me.

[silverado]

Originally Posted by Sharkmeat

For those who have a manual, does anyone else experience an inconsistent “throttle-blip” on downshift with the auto-rev feature in the M240?

IÂ’ve driven a manual my entire life and love the rev-match feature. That said, it seems to only work about 60% of the time and since I donÂ’t automatically blip the throttle anymore with my right foot on downshifts, when the system doesnÂ’t work, itÂ’s VERY noticeable and I look like a noob.

If I am giving the car gas immediately prior to downshifts, the system works 90% of the time. However, if the last action was breaking or coasting (typically at lower speeds - anything less than 40 mph), then the auto-rev feature only works 60% of the time. The car seems to especially get confused in stop-n-go traffic.

IÂ’ve learned a ton on this forum, so perhaps others have experienced similar events that I can learn from.

thanks.

I've noticed the same thing on my new M240i MT. The rev matching happens most of the time, but sometime it doesn't and I haven't figured out the pattern yet or if it's just buggy. I know how to rev myself, but if you expect it to rev for you and then it doesn't, makes for some jerky shifts. Has someone figured out the logic behind it?

[aerobod]

DSC off disables auto-blip.

[silverado]

Originally Posted by aerobod

DSC off disables auto-blip.

Yes, but that's not the reason for the above as I have not been in DSC off mode yet in this car.

[42395_skyline]

Originally Posted by silverado

Yes, but that's not the reason for the above as I have not been in DSC off mode yet in this car.

Make sure the dealer doesn't update your car. It removes the rev matching in all gears and only allows it for 1 gear down. So 4>2 doesn't work anymore but 4>3 will. I HATE it and it's so annoying because I was used to every gear working.

[CP911]

Originally Posted by Sharkmeat

For those who have a manual, does anyone else experience an inconsistent “throttle-blip” on downshift with the auto-rev feature in the M240?

IÂ’ve driven a manual my entire life and love the rev-match feature. That said, it seems to only work about 60% of the time and since I donÂ’t automatically blip the throttle anymore with my right foot on downshifts, when the system doesnÂ’t work, itÂ’s VERY noticeable and I look like a noob.

If I am giving the car gas immediately prior to downshifts, the system works 90% of the time. However, if the last action was breaking or coasting (typically at lower speeds - anything less than 40 mph), then the auto-rev feature only works 60% of the time. The car seems to especially get confused in stop-n-go traffic.

IÂ’ve learned a ton on this forum, so perhaps others have experienced similar events that I can learn from.

thanks.

Yes. Exactly what mine is doing. Took it out for the 2nd time the other day and it caught me off guard several times when it did not auto-blip. It was annoying when I would lurch forward in my seat due to the engine speed not being in sync with wheel speed.

The first time I drove it was on a road trip from SC to IN when I first bought it. I remember it working flawlessly on that trip.

Not sure what is going on now...

[silverado]

Originally Posted by 42395_skyline

Make sure the dealer doesn't update your car. It removes the rev matching in all gears and only allows it for 1 gear down. So 4>2 doesn't work anymore but 4>3 will. I HATE it and it's so annoying because I was used to every gear working.

I tried this out today and I think you right! It doesn't work when you skip gears downshifting. Actually, more accurately, it only knows two rev levels: the gear you were in and one lower. When I try shifting 2 gears lower and not release he clutch, I notice that the RPM doesn't drop all the way down, but actually stays at the level it was before I shifted down. If I move it to the 1 level down from the original gear and still keep the clutch down, it revs to the correct level.

Example - do all the shifts without releasing the clutch:

Driving in 5th, rpm at correct level for 5th
Shift into 4th, rpm at correct level for 4th
Shift into 3rd, rpm at correct level for 5th
Shift into 4th, rpm at correct level for 4th

Seems like a software bug to me!

[42395_skyline]

Originally Posted by silverado

I tried this out today and I think you right! It doesn't work when you skip gears downshifting. Actually, more accurately, it only knows two rev levels: the gear you were in and one lower. When I try shifting 2 gears lower and not release he clutch, I notice that the RPM doesn't drop all the way down, but actually stays at the level it was before I shifted down. If I move it to the 1 level down from the original gear and still keep the clutch down, it revs to the correct level.

Example - do all the shifts without releasing the clutch:

Driving in 5th, rpm at correct level for 5th
Shift into 4th, rpm at correct level for 4th
Shift into 3rd, rpm at correct level for 5th
Shift into 4th, rpm at correct level for 4th

Seems like a software bug to me!

Interesting! I haven't tested that and never noticed. After you mentioned it possibly being a glitch, I went to a post I saw a while back about it on the 3 series forum and look what I found. http://f30.bimmerpost.com/forums/sho...6&postcount=69

[silverado]

Thank you 42395_skyline! This is a great find!

[CP911]

Good find, indeed! It will be interesting to see if the engineers come back and admit it was a bug or if it turns out to be a permanent change for some crazy legal/safety reason. I do think it is a bug though, because I could swear it was working perfectly in every gear when I drove it home on Jan. 3rd. Now, all of a sudden, in March, it is operating differently for sure.

[keylime503]

Is this software update something that dealers usually apply without asking when you're in for your next service? My car definitely blips properly when going 4->2, 6->3, etc. As much as I'd love a button to turn auto-blip off completely, it makes no sense to have the car blip 3->2 and 4->3 but not 4->2.

[42395_skyline]

Originally Posted by keylime503

Is this software update something that dealers usually apply without asking when you're in for your next service? My car definitely blips properly when going 4->2, 6->3, etc. As much as I'd love a button to turn auto-blip off completely, it makes no sense to have the car blip 3->2 and 4->3 but not 4->2.

You have to ask for it or have an issue. It's not standard for service. I had issues that required an update and regretted it because of the loss of the auto blip and 5 blink turn signals. I'm never getting another update (other than to fix the autoblip issue) again!