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      05-19-2015, 06:24 PM   #1
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Accelerator pedal lag on rev match down shift? (6mt help needed)

Hey guys, Today i picked up my 328i msport. This is my first manual car i own(tho i know how to drive stick)

Something that I noticed, specifically on rev match down shifts there is a lag/delay in the accelerator as i try to get the revs up. Feels like i have to mash the throttle and hold it there to really get the revs over 3k(mind you this is happening while the clutch is engaged/in neutral).

albeit the car only has 25 miles on it, it's something that i noticed and will monitor in my drive tomorrow morning.

Anyone else notice this? Have any input?


Any help is much appreciated.

Thanks
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      05-19-2015, 06:41 PM   #2
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Put it in Sport/Sport+ is if you want a normal throttle mapping. In Comfort, it's effectively dead.
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      05-19-2015, 08:27 PM   #3
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Don't sweat it, you'll get used to the throttle.
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      05-19-2015, 08:40 PM   #4
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Originally Posted by S4NoMore View Post
Don't sweat it, you'll get used to the throttle.
thanks, i went for another drive a little earlier, sport mode is def more responsive.
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      05-20-2015, 11:57 AM   #5
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Quote:
Originally Posted by FC4 View Post
Put it in Sport/Sport+ is if you want a normal throttle mapping. In Comfort, it's effectively dead.
^^^ This. Comfort and Eco are effectively dead pedals.
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      05-20-2015, 01:54 PM   #6
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Yup.

For the past 2 years, i have been dealing with an issue that i had never dealt with any of my past manual cars.

It is very difficult or almost impossible to have smooth shift if you want to shift under WOT in comfort mode. It seems there is a gap between the throttle response and clutch release. Especially from 1st to 2nd. You almost have to purposely step on the gas earlier than you normally would.

In Sport or Sport +, it is much easier to drive and shift.

Dont know how it feels in Eco mode since I might have used it for no more than 30 secs in the past 2 years.
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      05-20-2015, 02:51 PM   #7
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I just came from a 335i msport with the sport auto transmission, and i drove that car in eco pro 99% of the time. (i do 80% highway driving)

So far i have found myself using sport a lot more. Its more responsive but because i am in a higher gear its not bad. In hte 335, in sport, the second you hit the throttle it downshifts and is super aggressive. Some might like it but for my everyday needs it was just too much for me.
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      05-20-2015, 02:57 PM   #8
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you will not have this "problem" in auto because other than the slow reaction from the throttle, it does not really affect anything else.

But in Eco/Comfort mode with 6mt, the slow response will affect the heel/toe, rev match and gear changing because while your clutch response will remain the same but throttle response changes with each mode.
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      05-20-2015, 03:14 PM   #9
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Quote:
Originally Posted by oonowindoo View Post
you will not have this "problem" in auto because other than the slow reaction from the throttle, it does not really affect anything else.

But in Eco/Comfort mode with 6mt, the slow response will affect the heel/toe, rev match and gear changing because while your clutch response will remain the same but throttle response changes with each mode.
Exactly. I test drove some other cars and it instantly stuck out to me when i picked my car up. otherwise i like it. the clutch is very smooth and i am getting better at driving it. have not tries a heel toe yet, but will soon.
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      05-24-2015, 09:53 AM   #10
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Installed the BMS clutch stop, and that has made things a little easier for me on rev match down shifting. Still have yet to really try heel-toe, need come practice on it. But getting better by the day
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      05-24-2015, 11:27 AM   #11
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Rev matching is much easier to do on a naturally aspirated engine. You'll get used to it.
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      05-25-2015, 03:52 PM   #12
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335i to the 328i

Justinnum1,

I see you have gone from a 335i to a 328i.

Did you find that the bigger motor was unnecessary? Poor gas mileage?

Interested in your experience with both of these models...thanks, robert
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      05-25-2015, 04:28 PM   #13
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Quote:
Originally Posted by SPGdriver View Post
Justinnum1,

I see you have gone from a 335i to a 328i.

Did you find that the bigger motor was unnecessary? Poor gas mileage?

Interested in your experience with both of these models...thanks, robert
yea, for my needs, i can get just as much satisfaction from the N20. I was getting pretty good mpg with the N55, like 27mpg. expecting about 32 with the N20
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      05-25-2015, 06:26 PM   #14
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335i vs 328i handling

Quote:
Originally Posted by justinnum1 View Post
yea, for my needs, i can get just as much satisfaction from the N20. I was getting pretty good mpg with the N55, like 27mpg. expecting about 32 with the N20
How about the handling? is the heavier N55 motor only noticeable when tracking the car? thanks, robert
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      05-25-2015, 06:33 PM   #15
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Quote:
Originally Posted by SPGdriver View Post
How about the handling? is the heavier N55 motor only noticeable when tracking the car? thanks, robert
it feels lighter, especially in the front end. n55 felt a little more stable on road, n20 feels more light footed.
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      05-25-2015, 09:56 PM   #16
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Quote:
Originally Posted by SPGdriver View Post
How about the handling? is the heavier N55 motor only noticeable when tracking the car? thanks, robert
I just bought a 335i and I can tell you it's noticeable a lot of the time. I am more picky than 99% of drivers on the road but I figure a lot of us on this forum are. The I6 results in a bit more initial lean on turn-in. It's almost like BMW undertuned the dampers to compensate for the larger engine. Is it bad? No, it's still a fantastic handling car and once it takes a set its locked on like a guided missile but the 328i feels more nimble. Less lean on initial turn-in and slightly better transient responses.

Unfortunately from a driving perspective I live in OK and have to go out of my way to find twisty roads (like 60 miles out of the way) so for me the effortless power of the 335i made the most sense.

I drove a LOT of vehicles leading up to my purchase if I can help you in any way I will.
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      05-25-2015, 10:18 PM   #17
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Quote:
Originally Posted by OUGrad05 View Post
I just bought a 335i and I can tell you it's noticeable a lot of the time. I am more picky than 99% of drivers on the road but I figure a lot of us on this forum are. The I6 results in a bit more initial lean on turn-in. It's almost like BMW undertuned the dampers to compensate for the larger engine. Is it bad? No, it's still a fantastic handling car and once it takes a set its locked on like a guided missile but the 328i feels more nimble. Less lean on initial turn-in and slightly better transient responses.

Unfortunately from a driving perspective I live in OK and have to go out of my way to find twisty roads (like 60 miles out of the way) so for me the effortless power of the 335i made the most sense.

I drove a LOT of vehicles leading up to my purchase if I can help you in any way I will.
Great feedback from both of you, I'm still on the fence re: 328i or 335i.


I believe they are both great; each has its own advantages...

maybe a some Bilstein HD shock absorbers would help out in the suspension department with the under-damping of the 335i shocks...

Last edited by SPGdriver; 05-25-2015 at 10:20 PM.. Reason: add
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      05-25-2015, 10:28 PM   #18
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Quote:
Originally Posted by SPGdriver View Post
Great feedback from both of you, I'm still on the fence re: 328i or 335i.


I believe they are both great; each has its own advantages...

maybe a some Bilstein HD shock absorbers would help out in the suspension department with the under-damping of the 335i shocks...
A change in shocks would help either car. They're all a bit under-damped IMO. It's more noticeable on the 335i and XDrive cars. DHP helps but comes with its own set of headaches.

Ultimately, our roads are bad here and I rarely get to push the chassis. The drivetrain is what won me over on the 335i...in terms of pure driving dynamics though? The new IS350 F Sport is better (I know that's unthinkable to say on a BMW forum but it's true). But for my daily commute the BMW is better, it's a bit bigger (I'm 6ft 6 so that's important for kid seats or anyone sitting behind me), its power delivery is still best in class with the possible exception of the S4 but it's a LOT smaller inside so deal breaker for me after I re-familiarized myself with them a couple weeks ago.

I was very VERY close to looking for a 328i, it has plenty of power. Ultimately, the unbelievably smooth delivery of the 335 and its instant power won me over. I don't think you can go wrong with either. If you're that on the fence with the powertrain maybe you start looking for options/packages you want at the price you want? From what I can tell there are literally 6-8x more 328i's out there vs 335i's, that could make finding what you want a lot easier. So if the engine in particular isn't a big concern find the car that's right.

Another thing to think about the 335i builds speed very quickly and effortlessly as I mentioned, but I only went WOT twice last week because it's simply NOT necessary. I had to look for an excuse to do it...in the 328i I think you can find a little more reason to push it harder which adds to the fun factor. Whether you go 328i or 335i they're both excellent, don't let detractors of either tell you otherwise.
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      05-25-2015, 10:49 PM   #19
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Quote:
Originally Posted by OUGrad05 View Post
A change in shocks would help either car. They're all a bit under-damped IMO. It's more noticeable on the 335i and XDrive cars. DHP helps but comes with its own set of headaches.

Ultimately, our roads are bad here and I rarely get to push the chassis. The drivetrain is what won me over on the 335i...in terms of pure driving dynamics though? The new IS350 F Sport is better (I know that's unthinkable to say on a BMW forum but it's true). But for my daily commute the BMW is better, it's a bit bigger (I'm 6ft 6 so that's important for kid seats or anyone sitting behind me), its power delivery is still best in class with the possible exception of the S4 but it's a LOT smaller inside so deal breaker for me after I re-familiarized myself with them a couple weeks ago.

I was very VERY close to looking for a 328i, it has plenty of power. Ultimately, the unbelievably smooth delivery of the 335 and its instant power won me over. I don't think you can go wrong with either. If you're that on the fence with the powertrain maybe you start looking for options/packages you want at the price you want? From what I can tell there are literally 6-8x more 328i's out there vs 335i's, that could make finding what you want a lot easier. So if the engine in particular isn't a big concern find the car that's right.

Another thing to think about the 335i builds speed very quickly and effortlessly as I mentioned, but I only went WOT twice last week because it's simply NOT necessary. I had to look for an excuse to do it...in the 328i I think you can find a little more reason to push it harder which adds to the fun factor. Whether you go 328i or 335i they're both excellent, don't let detractors of either tell you otherwise.
I'm gonna get the car used, with a 6MT, whichever one I decide on.

I had the chance to drive a 2012 328i 6MT, and then a 2012 335I 6MT on the same day last week.

The 328i was nice, but seemed to get a bit "breathless" at times. The 335i did feel a bit heavier up front, but not by much, and the engine is amazing, just pulls and pulls...even just driving around town, it didn't feel like it was overpowering, just fun to drive. Getting to drive both for a day would help with decision, but the "back to back" on the same day was pretty rare...
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      05-25-2015, 11:05 PM   #20
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Quote:
Originally Posted by OUGrad05
Quote:
Originally Posted by SPGdriver View Post
Great feedback from both of you, I'm still on the fence re: 328i or 335i.


I believe they are both great; each has its own advantages...

maybe a some Bilstein HD shock absorbers would help out in the suspension department with the under-damping of the 335i shocks...
A change in shocks would help either car. They're all a bit under-damped IMO. It's more noticeable on the 335i and XDrive cars. DHP helps but comes with its own set of headaches.

Ultimately, our roads are bad here and I rarely get to push the chassis. The drivetrain is what won me over on the 335i...in terms of pure driving dynamics though? The new IS350 F Sport is better (I know that's unthinkable to say on a BMW forum but it's true). But for my daily commute the BMW is better, it's a bit bigger (I'm 6ft 6 so that's important for kid seats or anyone sitting behind me), its power delivery is still best in class with the possible exception of the S4 but it's a LOT smaller inside so deal breaker for me after I re-familiarized myself with them a couple weeks ago.

I was very VERY close to looking for a 328i, it has plenty of power. Ultimately, the unbelievably smooth delivery of the 335 and its instant power won me over. I don't think you can go wrong with either. If you're that on the fence with the powertrain maybe you start looking for options/packages you want at the price you want? From what I can tell there are literally 6-8x more 328i's out there vs 335i's, that could make finding what you want a lot easier. So if the engine in particular isn't a big concern find the car that's right.

Another thing to think about the 335i builds speed very quickly and effortlessly as I mentioned, but I only went WOT twice last week because it's simply NOT necessary. I had to look for an excuse to do it...in the 328i I think you can find a little more reason to push it harder which adds to the fun factor. Whether you go 328i or 335i they're both excellent, don't let detractors of either tell you otherwise.
For the record, I'd say the driving dynamics champion is this class is the Cadillac ATS Alpha platform (it's weakness though is the drive train...for now).
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      05-26-2015, 12:02 AM   #21
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Quote:
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For the record, I'd say the driving dynamics champion is this class is the Cadillac ATS Alpha platform (it's weakness though is the drive train...for now).
Yes, last year I had a Cadillac ATS as a rental for 2 days. Chassis and steering were amazing, but the design, CUE system, etc. was awful...the BMW is still the best overall, can't wait to see what the car mags say about the 340i and the 330i with their LCI changes...
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