I had v36 loaded back in Dec. The stumble was gone. :smile:
Now it's 87 degrees here in Phoenix and it's back!!! :evil:
Not happy. I was just getting used to shifting without it, now it's back to feathering the clutch and hoping I don't get hit when turning in front of traffic.
Let's see if this is happening to others as it warms up in ohter states.

 

I too had V36 installed in Dec and have been quite happy with it. Yesterday was the first day here in DC where it was warm enough to try the air conditioning. It felt to me like the stumble had come back to a smaller degree on some launches from a dead stop. I also found myself feathering the clutch. Maybe the AC bogs the car down that much. I turned it off and the car felt great again.

 

I'm with MINI USA. I've passed this message on to a MINI National Customer Relations Representative who will be in touch with you soon.

 

Well, the strange thing is that I took delivery of my MINI in December. It didn't have it... but the more miles I have put on my MINI (7800 and counting) the more of a stumble it now has... It seems as if it's a full fledged stumble now. Someone congratulate me because I really feel special.

 

how funny.. that respose again....

Heck i have a bouncing idle and a stumble in 2nd gear.. whats the deal with this... I had that program install in Dec also. and i have been getting this for about 3 weeks... its been warm down here in GA...

 

Yup stumble is back, we've had it back for about 3 weeks now.

We have had the car just over a year, and it has spent over a month at the dealership, trying to resolve this issue.

I firmly beleive it will never be fixed.

 

Yesterday it was 88F here in Miami, high humidity as well. Drove all day long with the A/C and not a single problem. v36 was installed 2,000 miles ago.

 

I've noticed that the ECU software (v36) is very sensitive to the "smoothness" of the accelerator input.

If you let off on the gas even slightly during acceleration, the software gets confused and starts doing unexpected things. It needs a monotonically increasing input, if you know what I mean...

The electronic accelerator is one of the "enhancements" I could do without in modern cars.

 

stumbles are back, huh? Guess I'll keep my pre-v36 software then
for now. I was going to get the v36 loaded in about a month when i have
my 1st oilchange done.

I get a hiccup, but no serious stumble so I think I'll just wait till the 25k mile
service.

 

>>The electronic accelerator is one of the "enhancements" I could do without in modern cars.
>>

Amen to that, brother. Amen to that.

 

>>The electronic accelerator is one of the "enhancements" I could do without in modern cars.

I think if you drove a car with a good implementation of this you would have a different opinion. The MINI doesn't have the best implementation of this. It also doesn't have the best DSC out there either. I know it's not a sports car but SAAB has argubly the best electronic throttle and DSC on the market. Lot's of European mags to support that. Maybe it's because they write their own code. Just stay away from 1st year models! They like BMW use the public as a beta group for 1st year cars!! :-0

Kudos to BMW for putting those features in though. How many 16k cars have these features. I can't think of any. Certainly not the Focus. Personally I think the car is out of focus... I know very bad pun. The mods will probably pull this thread that was so bad...

 

>>
>>>>The electronic accelerator is one of the "enhancements" I could do without in modern cars.
>>
>>I think if you drove a car with a good implementation of this you would have a different opinion. The MINI doesn't have the best implementation of this. It also doesn't have the best DSC out there either. I know it's not a sports car but SAAB has argubly the best electronic throttle and DSC on the market. Lot's of European mags to support that. Maybe it's because they write their own code. Just stay away from 1st year models! They like BMW use the public as a beta group for 1st year cars!! :-0
>>
>>Kudos to BMW for putting those features in though. How many 16k cars have these features. I can't think of any. Certainly not the Focus. Personally I think the car is out of focus... I know very bad pun. The mods will probably pull this thread that was so bad...


I agree. Kudos to MINI for putting tech enhancements in thier cars at very reasonable price points. The technology is great but the implementation still needs work, specially from the controlling adaptive software standpoint.


There are folks that would love to have Carburated MINIs with manual chokes, crank windows, AM radios, No A/C, airbags, etc. I respect that but unfortunately in the realm of the auto industry they do belong to a very minuscule minority.

 

>>There are folks that would love to have Carburated MINIs with manual chokes, crank windows, AM radios, No A/C, airbags, etc. I respect that but unfortunately in the realm of the auto industry they do belong to a very minuscule minority.
>>

Maybe I'm alone in this but the reason I drive the MINI is because of the technology in the car. I love technology especially in cute fun to drive cars. I know it adds weight, subject to breaking, jacks up the price, and probably rarely use... but I just love it! Keep it coming BMW!

 

"I think if you drove a car with a good implementation of this you would have a different opinion. The MINI doesn't have the best implementation of this."

Well, I've had this "feature" on two high end sports cars so far. Both of them have quirky accelerator response. Admittedly, of those two makes, only one is known for its superb engineering.

Basically, the software has to guess at your intent by analyzing accelerator and brake inputs in the context of what else is going on -- vehicle dynamics, recent accelerator inputs, etc. And then, the stability management system gets to override if it feels like it. All this software usually gets it right. But sometimes, it's just plain wrong.

 

Those inputs are called "target speeds".

 

>>>>There are folks that would love to have Carburated MINIs with manual chokes, crank windows, AM radios, No A/C, airbags, etc. I respect that but unfortunately in the realm of the auto industry they do belong to a very minuscule minority.
>>>>
>>
>>Maybe I'm alone in this but the reason I drive the MINI is because of the technology in the car. I love technology especially in cute fun to drive cars. I know it adds weight, subject to breaking, jacks up the price, and probably rarely use... but I just love it! Keep it coming BMW!


I agree, I too have the stumble but am patient as it gets worked out. I dont mind being a "beta tester" to a degree. But let me make one thing clear to MINI devision and BMW NA. My future purchase of higher end bmw products rest on resolution and service. Just find a solution and make sure it happen and I will be patient and happy

 

I had 36 installed also. Prior to I had a slight stumble. Now that it is warm, the stumble is unreal! I am really starting to get fed up with this car. :evil:
If you think you have a slight stumble and don't have v 36 dont get it.

 

I received my 04 MCS in Dec. Yesterday and today were the first times it was warm enough in MI to use A/C. I had terrible stumble. It happened several times from a stop. Once moving, I can hardly notice the A/C. So today I experimented a little with teh A/C on. It does seem to relate closely with the agressiveness and hesitation in the throttle input. Also, if you let the engine rev closer to 2k before releasing the clutch, you can't tell you have the A/C on. If you start at 1500 it bogs heavily and then quickly launches.

I wouldn't say it's horrible, especially if you know it will do it.

 

Hi there....

Team M7 has worked on a solution (and fixed it) for the sluggish throttle response and stumble/yo-yo
this problem has a very simple fix, and we will release the info this week after we put the cars on the dyno
to verify the changes (show me the numbers)

We are also looking for a car with serious stumble/yo-yo, if your in the Los Angeles area and would
like to test our fix call us for more info....

peter horvath
Team M7

562-712-3270

 

Got the car in Feb with v36 already installed. No stumbles so far. I didn’t realize it was A/C related. It hasn't been warm enough here for the A/C yet – only in the 50/60s. Will be in the 80s tomorrow, so I'm on the look out.

 

I had a slight stumble before. (with the AC off) i got it flashed and it hasnt been back since. I got the software update in the winter when i was in for service, now that its warmer out (80s) i still dont notice it. Havent tried it with the AC on because AC is for wimps Windows down, sun roof open. ahhh "fresh" air.

 

I too had V3.6 flashed two months ago, (1500 Miles) stumble is back Thought I was crazy glad to kno wits just the car, It is much more noticeblw with the AC on!
What is the new Version 3.8 supposed to do??

 

I'm around 500MI on the odo now, with the A/C on it was slightly noticable. I think it is primairly a lack of low-end torque. I found a launch around 1500RPM is required to get a smooth takeoff w/o bogging when the A/C is on.

I also have the yo-yo, not bad, but you can notice it... I wonder if the s^$t hits the fan in a few thousand miles of motoring

People say "well it's a 1.6L" true, but I've driven a non-supercharged VW Golf before a 1.6L, and I didn't find the lack of torque to be much of a problem. Granted this was in South Africa, but the weight of that spec car was similar to an MCS anyhow.
I think the supercharger may also contribute, as it's more mass at the very initial acceleration in revs to accelerate compression, no???

 

87 degrees. V36. Drove for a couple of hours on and off. A/C on. No stumble, Fingers crossed.

 

Mine stalled this morning. That has never happened before. :???: