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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #101  
Old 08-01-2012, 01:48 AM
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wit3356, I believe I sense what you are trying to do here (having been an aviation expert witness in liability cases) and I believe what you truly need is an automotive expert witness.
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  #102  
Old 08-01-2012, 06:53 AM
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Originally Posted by Emission View Post
That is a very misleading "test" (yes, I'm saying Consumer Reports screwed up).

"Driving the Avalon down our track with the accelerator floored, our driver reached 60 mph and then pushed the brake pedal to the floor and kept it there with all the force he could muster. The Avalon finally ground to a halt, after over 500 feet. A normal stop from 60 mph would take about 140 feet."

Those brakes were tasked with fighting engine power and kinetic energy - that is above and beyond the call of duty. The brakes on a Toyota will eventually overheat and fail... as they did in the test.

We are talking about a vehicle at a standstill, or going slowly...

- Mike
Agree its a BS test...easy test...find a safe spot, press brake pedal hard & floor throttle
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Last edited by bear-avhistory; 08-01-2012 at 07:01 AM.
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  #103  
Old 08-01-2012, 10:04 AM
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chris328 chris328 is offline
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doesnt the 335is have some sort of electronic launch control that you have to engage through the dash or something?
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  #104  
Old 08-02-2012, 09:50 PM
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Originally Posted by chris328 View Post
doesnt the 335is have some sort of electronic launch control that you have to engage through the dash or something?
Not that I am aware of.

- Mike
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  #105  
Old 08-03-2012, 06:20 AM
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Yes with the DCT. Involves holding the brake & flooring the throttle with the trans in full manual/sport. Release the brake & off you go quickly. I am modified to 380whp/440chp & it works fine although I personally prefer to launch without it.
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Last edited by bear-avhistory; 08-03-2012 at 06:23 AM.
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  #106  
Old 08-03-2012, 08:40 AM
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Originally Posted by bear-avhistory View Post
Yes with the DCT. Involves holding the brake & flooring the throttle with the trans in full manual/sport. Release the brake & off you go quickly. I am modified to 380whp/440chp & it works fine although I personally prefer to launch without it.
Is that an official "Launch Control" mode, as recognized by BMW? If so, just learned something new...

- Mike
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
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  #107  
Old 08-03-2012, 09:00 AM
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Its a standard function of the 7DCT trans. 335is, M3, Z4sDrive35is & some non US 335i's have this trans. The regular auto or manual trans does not have launch control.
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  #108  
Old 08-03-2012, 09:20 AM
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Originally Posted by bear-avhistory View Post
Its a standard function of the 7DCT trans. 335is, M3, Z4sDrive35is & some non US 335i's have this trans. The regular auto or manual trans does not have launch control.
Cool, and interesting. I don't have much experience with the DCT, as most of the BMW models I drive are MT or Auto (slushbox). I'm scheduled to drive the new M5 and M6 at Laguna Seca in two weeks (both MT and 7-speed dual-clutch automatic). I'll try launch control.

- Mike
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I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
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  #109  
Old 08-03-2012, 09:31 AM
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Car need at least 1200 miles on the clock, fully warm oil, stick pulled left to S mode, sport button pressed & traction control off. Ask to see the owners manual for the sequence to set it up. When its in LC mode a checkered flag will show up on the display. I have driven stick in competition since 1960 & am used to feathering the throttle for traction control off the line. To me its easier & I think the car is quicker then using LC & letting the car drive itself. Also with the JB4 my shift points are 6250rpm not redline like the robot.
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Last edited by bear-avhistory; 08-03-2012 at 09:32 AM.
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  #110  
Old 08-03-2012, 12:42 PM
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Emission Emission is offline
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Originally Posted by bear-avhistory View Post
Car need at least 1200 miles on the clock, fully warm oil, stick pulled left to S mode, sport button pressed & traction control off. Ask to see the owners manual for the sequence to set it up. When its in LC mode a checkered flag will show up on the display. I have driven stick in competition since 1960 & am used to feathering the throttle for traction control off the line. To me its easier & I think the car is quicker then using LC & letting the car drive itself. Also with the JB4 my shift points are 6250rpm not redline like the robot.
I've found that most late-model turbocharged vehicles should be shifted about 1,000 rpm below redline (e.g., the turbocharged F30 328i).

- Mike
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
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  #111  
Old 08-03-2012, 03:56 PM
mjrbimmer335i mjrbimmer335i is offline
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Originally Posted by Emission View Post
I've found that most late-model turbocharged vehicles should be shifted about 1,000 rpm below redline (e.g., the turbocharged F30 328i).

- Mike
I'm sorry but I'm curious what is a turbocharged 328i? Because I thought that it was the 335 with twin turbos but is there something I don't know about with the 328?
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  #112  
Old 08-03-2012, 04:01 PM
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Emission Emission is offline
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I'm sorry but I'm curious what is a turbocharged 328i? Because I thought that it was the 335 with twin turbos but is there something I don't know about with the 328?
The new 328i has BMW's N20 4-cylinder turbo underhood. One turbo. But you knew that, right. The new 335i has a single-turbo N55.

- Mike
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
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  #113  
Old 09-13-2012, 08:19 PM
MSVX3 MSVX3 is offline
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Originally Posted by MSVX3 View Post
Hi all,

On Friday July 27 I was slowly pulling into my driveway and suddenly my 2007 BMW X3 took off. I managed to steer all the way, missed the wall, hit a tree, drove on my neighbour's lawn and barely missed her SUV (minor scratches to the rear bumper). Finally I used the emergency brake, put it in neutral and turned the car off to stop it while the engine was still reving high. I had my foot on the brake hence the tire marks on my driveway. A simple search on internet reveals other similar incidents. I have posted a few pictures.

Best,
I got an update on this incident. I sent the X3 to a BMW dealership for investigation. I was told that the Vanos solenoid sensors were faulty causing the vehicle to surge.
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  #114  
Old 09-13-2012, 10:33 PM
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Emission Emission is offline
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I got an update on this incident. I sent the X3 to a BMW dealership for investigation. I was told that the Vanos solenoid sensors were faulty causing the vehicle to surge.
Wow. Thanks for the update!

- Mike
__________________
I am fortunate to have unique press cars delivered weekly, but I own:

'13 Audi Q5 2.0T Quattro 8AT
'86 Porsche 911 Turbo 4MT


Gone, but never forgotten... my E70 X5 35d, E90 335i, E46 330i, E36 328i, E70 X5 3.0si, E53 X5 3.0i.
~~~~~~~~~~~~~~~~~~~~~~~~~
Read my work as West Coast Editor for Autoblog!
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