[radgator1]

So I got my 335i back from ED about a week ago (e90 335i) and it was delayed for almost 3 weeks from the ship arriving to me getting it from the dealer because they were holding it at the VPC to do the software update Cold start and maybe a couple of other things). i am loving having my car back but I noticed it does something that it didnt do at all in Europe. When I take off from a stop, say at a light, when i press on the gas even in non-sport mode the car hesitates for a second then takes off so that it is hard to get a smooth takeoff at times. Otherwise it drives awesome and I cant say I notice any appreciable change in power but this jumpy start is definitely new and I have to assume it is related to the software update. Anyone else getting this?

Thanks, Kevin

[GregL]

I find this is just a characteristic of drive-by-wire throttle systems in general, Mercedes gas pedal feel is even worse from a complete stop. But for a 335 in particular, combine that with the low rpm's it needs to produce torque and it just elevates the "problem". You'll get used to it, give it some time and your foot will figure out how to make a smooth take off

Edit: What were you driving inbetween while waiting to have the car back after doing ED? Probably quite a contrast too I'm betting.

[radgator1]

Originally Posted by GregL

I find this is just a characteristic of drive-by-wire throttle systems in general, Mercedes gas pedal feel is even worse from a complete stop. But for a 335 in particular, combine that with the low rpm's it needs to produce torque and it just elevates the "problem". You'll get used to it, give it some time and your foot will figure out how to make a smooth take off

Edit: What were you driving inbetween while waiting to have the car back after doing ED? Probably quite a contrast too I'm betting.

Thanks for the replies. Yeah I guess I'll get have to get used to it. I'm wondering if it will seem better or worse if I get the Xede. I have been driving a 2002 ML320 (my wifes old car) so yeah there is a big difference in low end torque to say the least . Thanks for the replies,

Kevin

[harry335]

Yes, our auto 335 does this - takes some getting used to.

[Agent007]

I sometimes have that problem in my 335 auto. I have adjusted how I take off and don't have the problem much anymore.

[NFS13]

Originally Posted by GregL

I find this is just a characteristic of drive-by-wire throttle systems in general, Mercedes gas pedal feel is even worse from a complete stop. But for a 335 in particular, combine that with the low rpm's it needs to produce torque and it just elevates the "problem". You'll get used to it, give it some time and your foot will figure out how to make a smooth take off

Edit: What were you driving inbetween while waiting to have the car back after doing ED? Probably quite a contrast too I'm betting.

+1 Had this with my cls500 & a6 also

[Ninjaneer]

Originally Posted by harry335

Yes, our auto 335 does this - takes some getting used to.

+1

Took me awhile to get used to as well. You'll just have to learn how much gas to give it till you can pull off a smooth start. I was trying to give it the same amount of gas I'd give my mom's '95 Honda Accord, and yea umm that doesn't work the same way

Try depressing the pedal slightly and keeping it there till it launches... resist the urge of pressing it further... vary the amount of depression till you find the spot that gives you a non-lurching start. BTW I had the same prob when test driving the 330i too, wasn't totally used to it. The 335i seems a bit more pronounced though.

[asdfaa]

i have a TSX as well that has drive by throttle and it doesnt do this at all, i have noticed this with my 335 but it seems worse when the engine is colder, i am wondering if i have that hesitation problem others have been reporting.

[radgator1]

Originally Posted by bg_27

i have a TSX as well that has drive by throttle and it doesnt do this at all, i have noticed this with my 335 but it seems worse when the engine is colder, i am wondering if i have that hesitation problem others have been reporting.

Yeah, I noticed it is worse when it is cold. I have tried putting it in sport and starting in 2nd and that helps (which is weird b/c I thought non-sport mode was suppose to be a second gear launch anyway ). I'd like to hear from the Step Xede guys. Maybe Shivs software is better and reduces this some. Then we can just tell BMW the reason we had to get the Xede was to correct their faulty software and make the car safer by getting rid of the lurching

[sdiver68]

DS mode for me helps, and learning to drive around the lurchy conditions also helps. Coasting to a stop, not stopping completely, getting on gas hard = lurch. Cold start = lurch if aggressive with throttle. I attribute the lurch to not knowing whether to be in 1st or 2nd gear along with the quick lockup converter.

Manual mode gets rid of it completely!

[trick50]

Originally Posted by radgator1

Thanks for the replies. Yeah I guess I'll get have to get used to it. I'm wondering if it will seem better or worse if I get the Xede. I have been driving a 2002 ML320 (my wifes old car) so yeah there is a big difference in low end torque to say the least . Thanks for the replies,

Kevin

I would reco trying the divertor valves from miltek. According to their telephone sales dept. the divertor valves provide crisper smoother throttle response...

Based on that I think I am going to order them as well.

[vkk]

I wonder if the following has something to do with it. I found it in the Sedan brochure, not the coupe, but I assume the technology is the same. The brochure says the following: "3. Start-Off Assistant: DSC helps prevent your vehicle from rolling backwards or forwards when you're stopped on a hill. It even holds your car momentarily when you release the brake to start moving again".

Now, I wonder if it kicks in even in a slight incline -- I'm speculating of course.

[GregL]

Originally Posted by vkk

I wonder if the following has something to do with it. I found it in the Sedan brochure, not the coupe, but I assume the technology is the same. The brochure says the following: "3. Start-Off Assistant: DSC helps prevent your vehicle from rolling backwards or forwards when you're stopped on a hill. It even holds your car momentarily when you release the brake to start moving again".

Now, I wonder if it kicks in even in a slight incline -- I'm speculating of course.

Yes it does, our cars have a momentary delay if the driver immediately releases the brake pedal and slams on the gas, this delay is not present if the brake is first released and the car allowed to roll for a split second. So in an effort to compensate for this perceived lag, some drivers tend to press the gas pedal harder than usual and then it jumps more than originally intended.

Originally Posted by Ninjaneer

+1

Took me awhile to get used to as well. You'll just have to learn how much gas to give it till you can pull off a smooth start. I was trying to give it the same amount of gas I'd give my mom's '95 Honda Accord, and yea umm that doesn't work the same way

Try depressing the pedal slightly and keeping it there till it launches... resist the urge of pressing it further... vary the amount of depression till you find the spot that gives you a non-lurching start. BTW I had the same prob when test driving the 330i too, wasn't totally used to it. The 335i seems a bit more pronounced though.

Depressing the pedal slightly and keeping it there is exactly the way to do it with these cars, it takes a while for the actual acceleration to build-up and get on par with what the driver expects it to be at "x" pedal depression. Unlike a car with a throttle cable connecting to a butterfly valve/throttle plate in the intake manifold by contrast.

[kujo]

Milltek makes DVs for the 335 ???????

[Russellnyc]

Yep, mine lurches a bit. It's nothing compared to the wild lurching and bucking of my other turbo car, but it's enough to notice. This happens for me only under mid-throttle. If I give it very little gas or a lot it does not lurch at all.

[digi]

Originally Posted by GregL

Yes it does, our cars have a momentary delay if the driver immediately releases the brake pedal and slams on the gas, this delay is not present if the brake is first released and the car allowed to roll for a split second. So in an effort to compensate for this perceived lag, some drivers tend to press the gas pedal harder than usual and then it jumps more than originally intended.

Hmmm...isn't that feature only on manual tranny cars? I have it on my six speed and I believe it's primarily for the hill starts to prevent roll when releasing the brakes. It's an awesome feature but as soon as you even tap the accel pedal, the hill assist releases the brakes and does not interfere any further. I don't believe that this system has anything to do with the lurch on auto trannies. I could be wrong though....

[ilshim]

this lurching is "acceptable," "deal with it"? why should we when we spend 40+K on a car?

[SkipSauls]

I think that this must depend on driving style as I just don't seem to experience what you guys are talking about. I also don't feel like I'm fighting with the hill braking (or whatever it's called) that some have complained of. The only thing that I have to adjust to when I get into the 335i after another car is the touchiness of the brakes, which feel a bit overboosted to me.

[Mr. BMW]

Originally Posted by ilshim

this lurching is "acceptable," "deal with it"? why should we when we spend 40+K on a car?

+1

I would not just deal with it!

I had this same problem with my X5 and my E46 330ci. They were both manual but the problem is caused by the drive-by-wire and not the transmission or the CDV.

Some cars have it and some don’t. It’s has nothing to do with driving style. If you mash the gas pedal, the car should take off not sit and think about it for half a second and then get up and go.

Lucky for me my E90 does not have this problem but why the FUCK hasn’t BMW fixed this problem yet??????:mad: :mad: :mad: :mad: :mad: :mad: