BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      07-10-2008, 11:29 AM   #1
JohnnyTT
Captain
JohnnyTT's Avatar
12
Rep
742
Posts

 
Drives: 2011 X3 3.5
Join Date: Apr 2008
Location: East Coast

iTrader: (0)

...I discovered something with my Steptronic

Hello all. So last night I was cruisng on the highway doing 75. Since I just finished my 1200 mile break in, I'm starting to see what this thing can do.

So I put the car in manual mode.. 6th gear and wanted to floor it to see how it pulled from 75 and up. I found something I never felt before. When you push the pedal far down... there is a strong resistance point which I always thought was floored. Well...this time for my 6th gear experiment I did what I've been waiting 1200 miles for.... smashed my foot on the pedal. WELL, the pedal went past that point of resistance and hit the floor board and the car automatically and instantaneously shifted to 3rd gear. It jumped 3 gears.. and the engine was ROARing.

So.... I learned 2 things.... that this thing can jump gears like that....and there is a strong resistance point on the gas pedal that I always thought was the bottom.


More experimenting to follow.
Appreciate 0
      07-10-2008, 11:32 AM   #2
BJDrew
Impatiently Waiting
2
Rep
105
Posts

 
Drives:
Join Date: Jun 2008

iTrader: (0)

Read the manual - it's a feature of the car. Floor it like that, and you'll downshift for MAX POWER!

Toyota PRIUS - One FLAG
Bimmer 135i - SIX FLAGS!
Appreciate 0
      07-10-2008, 11:33 AM   #3
Red135
La Flama Blanca
Red135's Avatar
18
Rep
1,545
Posts

 
Drives: 1-series
Join Date: Mar 2008
Location: Abq, NM

iTrader: (1)

That is the transmission's 'kick-down' mode.
__________________
AMS, Berk Technology, aFe, ER
Appreciate 0
      07-10-2008, 11:33 AM   #4
moff
Captain
moff's Avatar
United Kingdom
14
Rep
667
Posts

 
Drives: 135i M Sport AW / Coral
Join Date: Jan 2008
Location: Nottingham GB

iTrader: (0)

That's called kick-down and happens on most auto boxes. The resistance point should not be too strong though, it should feel like more of a click than a shove IMO.

It does the same on our 335d and also did it on our old E46 330i Cab.

It really annoys me when you are in the 'manual' mode and it still kicks down.
__________________
Born 30/04/10: MY10 135i M Convertible, AW, Coral Red, Logic 7, Elec Mirrors, Ipod USB, Xenon's, Heated Seats, Wind Deflector, BMS DCI, JB+, BMW Performance: Exhaust, SSK, Handbrake, Pedals and Shadowline grills

Gone! MY08 135i M Coupe, AW, Coral Red, Logic 7, Xenon's, Darkened Glass, Ipod USB
Appreciate 0
      07-10-2008, 11:38 AM   #5
Crowley
Major
16
Rep
1,015
Posts

 
Drives:
Join Date: Oct 2007

iTrader: (0)

Quote:
Originally Posted by BJDrew View Post
Read the manual - it's a feature of the car. Floor it like that, and you'll downshift for MAX POWER!

Toyota PRIUS - One FLAG
Bimmer 135i - SIX FLAGS!

lol
__________________


The last words on the powerplant should go to a clearly overwhelmed Hormazd Sorabjee, editor and publisher of Autocar India: There is something simply magical about BMWs in-line six. It has a creamy smoothness that makes velvet feel like sandpaper.
Appreciate 0
      07-10-2008, 11:39 AM   #6
JohnnyTT
Captain
JohnnyTT's Avatar
12
Rep
742
Posts

 
Drives: 2011 X3 3.5
Join Date: Apr 2008
Location: East Coast

iTrader: (0)

Quote:
Originally Posted by BJDrew View Post
Read the manual - it's a feature of the car. Floor it like that, and you'll downshift for MAX POWER!

Groovy... I didn't realize the car could jump 3 gears though.


Quote:
Originally Posted by moff View Post
It really annoys me when you are in the 'manual' mode and it still kicks down.
Yeah, I'd rather have complete control. But I wonder if I hit that res. point... is the car WOT? and when I pass it, it justs put me in the max accel gear?
Appreciate 0
      07-10-2008, 12:20 PM   #7
plien69
Captain
9
Rep
841
Posts

 
Drives: 2014 M235i
Join Date: Apr 2007
Location: CT

iTrader: (0)

Yes, you are at WOT without going past the kickdown switch.
Appreciate 0
      07-10-2008, 12:22 PM   #8
plien69
Captain
9
Rep
841
Posts

 
Drives: 2014 M235i
Join Date: Apr 2007
Location: CT

iTrader: (0)

Quote:
Originally Posted by JohnnyTT View Post
Groovy... I didn't realize the car could jump 3 gears though.
Jumping gears is touted as a feature of the ZF transmission.

Invoking kickdown like you described is the only scenario I've found so far where the tranny will jump gears. I've not been able to get it to skip gears when using the paddle shifters, for example.
Appreciate 0
      07-10-2008, 12:37 PM   #9
JohnnyTT
Captain
JohnnyTT's Avatar
12
Rep
742
Posts

 
Drives: 2011 X3 3.5
Join Date: Apr 2008
Location: East Coast

iTrader: (0)

Yeah, plien.. but I've always been able to get it to jump 2 gears.. this is the first time I got 3.

I think you and I discussed the jumping in manual mode before. It doesn't seem possible.
Appreciate 0
      07-10-2008, 12:38 PM   #10
Robert
Major General
118
Rep
6,902
Posts

 
Drives: 135i, current is350
Join Date: Aug 2005
Location: Socal

iTrader: (1)

The kickdown point on the pedal is ubiquitous on most automatic cars. :-) 3 gears downshift is pretty cool.
__________________
- There's nothing in my pocket other than knives and lint
Appreciate 0
      07-10-2008, 12:41 PM   #11
TagMan
Car Addict!!
TagMan's Avatar
United_States
23
Rep
1,303
Posts

 
Drives: '08 135i Convertible
Join Date: Oct 2008
Location: Malibu, California

iTrader: (0)

In automatic transmissions, when invoking "kickdown", there is a slight time lag, as the tranny finds the right gear. On some cars, this process takes much too long. On others, it is extremely quick. The difference between various transmissions is profound.

How much of this typical lag does the Steptronic demonstrate? IOW, how quick does it find and engage that appropriate lower gear ratio compared to other trannies?
__________________
2008 /// Commemorative /// 6-Speed /// Titanium Silver /// Fully-Loaded /// 135i Convertible
Appreciate 0
      07-10-2008, 12:44 PM   #12
I-One-Da?
That One Guy
4
Rep
391
Posts

 
Drives:
Join Date: May 2008

iTrader: (0)

So when you are in "manual" mode and you stomp the gas, will it downshift for you still? I thought that it was basically a clutchless manual at that point:iono:

I guess I will have to test this out when I pick up my 1er next week:roundel:
__________________
| Alpine White | Coral | Gloss Black | Paddles | Sport | Comfort | Heated Seats | I-Pod | Performance Rotors | Shadowline Grill | GB E-Brake | GB Gear Selector | 35% Tint | BMS Intake | GP Thunders | Debaged | Bimmian Black Roundels |
Appreciate 0
      07-10-2008, 01:03 PM   #13
plien69
Captain
9
Rep
841
Posts

 
Drives: 2014 M235i
Join Date: Apr 2007
Location: CT

iTrader: (0)

Quote:
Originally Posted by I-One-Da? View Post
So when you are in "manual" mode and you stomp the gas, will it downshift for you still? I thought that it was basically a clutchless manual at that point:iono:

I guess I will have to test this out when I pick up my 1er next week:roundel:
Yes, it will still downshift for you if you're in Manual mode. it will also upshift for you when you hit redline in Manual mode.

Those are probably my biggest complaints with the Step. Not so much the downshift, but the upshift at redline bugs me.
Appreciate 0
      07-10-2008, 01:04 PM   #14
plien69
Captain
9
Rep
841
Posts

 
Drives: 2014 M235i
Join Date: Apr 2007
Location: CT

iTrader: (0)

Quote:
Originally Posted by TagMan View Post
In automatic transmissions, when invoking "kickdown", there is a slight time lag, as the tranny finds the right gear. On some cars, this process takes much too long. On others, it is extremely quick. The difference between various transmissions is profound.

How much of this typical lag does the Steptronic demonstrate? IOW, how quick does it find and engage that appropriate lower gear ratio compared to other trannies?
Tag, it is very quick. The quickest I've ever experienced in an auto. It's almost scary the first time you try it.
Appreciate 0
      07-10-2008, 01:07 PM   #15
I-One-Da?
That One Guy
4
Rep
391
Posts

 
Drives:
Join Date: May 2008

iTrader: (0)

Quote:
Originally Posted by plien69 View Post
Yes, it will still downshift for you if you're in Manual mode. it will also upshift for you when you hit redline in Manual mode.

Those are probably my biggest complaints with the Step. Not so much the downshift, but the upshift at redline bugs me.


Yeah, that upshift in steps bugs me too. Why is it that they can't just let you bounce off the rev limiter if you want to in a step? I do not see there being any type of liability issue since I can do the same in a manual:iono:

Is there a reason that I am not thinking off besides the fact that an auto tranny cost more $$ so to protect it makes a little more sense?
__________________
| Alpine White | Coral | Gloss Black | Paddles | Sport | Comfort | Heated Seats | I-Pod | Performance Rotors | Shadowline Grill | GB E-Brake | GB Gear Selector | 35% Tint | BMS Intake | GP Thunders | Debaged | Bimmian Black Roundels |
Appreciate 0
      07-10-2008, 01:22 PM   #16
subscience
Second Lieutenant
United_States
2
Rep
237
Posts

 
Drives: 08 135i
Join Date: May 2008
Location: Los Angeles

iTrader: (0)

I think the fuel injector cuts off when you attempt to pass the redline in an MT.
__________________

08 jet black 135i | sport, 6-mt
Appreciate 0
      07-10-2008, 01:24 PM   #17
JohnnyTT
Captain
JohnnyTT's Avatar
12
Rep
742
Posts

 
Drives: 2011 X3 3.5
Join Date: Apr 2008
Location: East Coast

iTrader: (0)

Quote:
Originally Posted by TagMan View Post
In automatic transmissions, when invoking "kickdown", there is a slight time lag, as the tranny finds the right gear. On some cars, this process takes much too long. On others, it is extremely quick. The difference between various transmissions is profound.

How much of this typical lag does the Steptronic demonstrate? IOW, how quick does it find and engage that appropriate lower gear ratio compared to other trannies?

It was really quick. So quick it shocked me. I'll do it again tonight and see just how quick it is.
Appreciate 0
      07-10-2008, 01:25 PM   #18
JBurer
Private First Class
5
Rep
144
Posts

 
Drives: 2008 135i, 1991 911 Turbo
Join Date: Apr 2008
Location: Dallas, TX

iTrader: (0)

Love it!!
Here I thought six flags was only airing that in GA.

Quote:
Originally Posted by BJDrew View Post
Read the manual - it's a feature of the car. Floor it like that, and you'll downshift for MAX POWER!

Toyota PRIUS - One FLAG
Bimmer 135i - SIX FLAGS!
Appreciate 0
      07-10-2008, 03:29 PM   #19
akak1997
Major
17
Rep
1,161
Posts

 
Drives: BMW 135 @ 135mph
Join Date: Aug 2008
Location: Los Angeles

iTrader: (2)

Garage List
2008 135i  [0.00]
Arh, little grasshopper, I see you have discovered the secret button. The way to really bad mpg can now begin.


Trust me... it's addictive... I first found out there's a button like that in my Golf, and ever since, I can't stop pressing it. I used to get around 30mpg on the Golf, after discovering the button, 23mpg... And that's in a 2.0L N/A engine.
Appreciate 0
      07-10-2008, 04:39 PM   #20
Qube
Lieutenant
12
Rep
531
Posts

 
Drives: E39 540 :: 09 STi
Join Date: Apr 2008
Location: Right here.

iTrader: (0)

How else would you pass someone on the highway with a slushbox?

On the 540 (Step) it goes 5th to 3rd and away it goes...

On the 128 I manually drop it 6th to 3rd

On the 135 I manually drop it 6th to 4th... though realistically, it still pulls in 5th or 6th!
__________________
Appreciate 0
      01-13-2009, 03:51 PM   #21
jmunro
First Lieutenant
United_States
3
Rep
338
Posts

 
Drives: 1M
Join Date: Dec 2008
Location: NJ

iTrader: (0)

Quote:
Originally Posted by plien69 View Post
Yes, it will still downshift for you if you're in Manual mode. it will also upshift for you when you hit redline in Manual mode.

Those are probably my biggest complaints with the Step. Not so much the downshift, but the upshift at redline bugs me.
Actually if you're in manual mode on the Steptronic and when you upshift, just continue to hold the "stick" forward in that gear and the engine will continue to redline or even past redline if you so dare
Appreciate 0
      01-13-2009, 05:50 PM   #22
instantexpert
Private
0
Rep
95
Posts

 
Drives:
Join Date: Jul 2008

iTrader: (0)

Quote:
Originally Posted by I-One-Da? View Post


Yeah, that upshift in steps bugs me too. Why is it that they can't just let you bounce off the rev limiter if you want to in a step? I do not see there being any type of liability issue since I can do the same in a manual:iono:

Is there a reason that I am not thinking off besides the fact that an auto tranny cost more $$ so to protect it makes a little more sense?
I drove an IS350 which just bounced off the rev limiter instead of upshifting. The test drive was a frustrating experience because red-line came so fast that I was unable to shift to keep up and the car was much slower than the 135 step I tested. That said, I still bought the 135i MT...
__________________
------------------------
2009 135i JB/Black Leather/Aluminum Trim/Premium/Sport/Nav/HD Radio/iPod/CA
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:01 AM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST