E91 Straight Six Bearding

E91 Straight Six Bearding

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zippyonline

Original Poster:

352 posts

127 months

Tuesday 8th August 2017
quotequote all
For the E9x - DTC is a "sub-system" of DSC. (Uses an MK60E5 control system thingy if that helps anyone! - 4 pots use a less sophisticated MK60psi control system). The DSC button that you're used to ATM I think has been renamed to DTC (Dynamic Traction Control) on the E9x.
This MK60E5 is also used on the E60 M5!

Here's a good quote - but there's a lot of literature on it. For example, even with DSC on, it won't intervene if you pull the handbrake (although I do think the handbrake is crap anyway, so I dunno if just click the handbrake up a notch will help pop you into tyre-smoke mode quicker than holding the DTC button down for half an hour to disengage it!

[i]DSC is ON by default, there is no need to press any buttons on start up. DSC uses a series of sensors to detect wheel spin, yaw rate of the car and other properties. Using sensors and other electronics it can apply the brakes as needed, cut engine power and with Active Steering it can make small steering corrections to better keep the car under control. In layman terms, all the nannies are on by default and help to keep the car from spinning out. When DSC is intervening a caution light will flash in the instrument cluster.

In some models, DTC (Dynamic Traction control) is a sub-function of DSC. It is activated by briefly pressing the DTC button. A light will light up in instrument cluster indicating this function has been activated. DTC will allow the wheels to spin, increases the angle at which the system will begin to apply the brakes (eliminates the yaw rate sensors) and does NOT cut the engine power. This system function is designed to allow the driver to spin the wheels in order to get through snow, ice and other conditions where wheel spin is required. While certain sensors are deactivated others still remain active. This function also provides a more sporty driving experience in dry conditions while at the same time being a limited security blanket. Having some track time messing with this system, DTC will still cut in and apply braking so you can ‘t get the back end out all that much but it still allows you full power to motor through. Like DSC a blinking caution light indicates the system is intervening.

DSC/DTC can be turned OFF by holding the DTC button for 3 seconds. The caution indicator light will remain lit in the instrument cluster, the nannies are now off and you are on your own so stay within your abilities![/i]


Edited by zippyonline on Tuesday 8th August 11:32


Edited by zippyonline on Tuesday 8th August 11:33

ATM

12,404 posts

180 months

Tuesday 8th August 2017
quotequote all
Ok thanks

So in the 550i the button is labelled DSC. In the 335i I guess the button is labelled DTC. I'll check later.

So if I activate DTC in the 335i the system will never cut power - great!

Next I see Active Steering gets a mention. Does the 335i have this?

zippyonline

Original Poster:

352 posts

127 months

Tuesday 8th August 2017
quotequote all
ATM said:
Next I see Active Steering gets a mention. Does the 335i have this?
IIRC, it's an option - so guess you can look on your VIN lookup.

Or, if you have a green label with a "star shaped" cap, then you don't have active steering. e.g.
http://www.realoem.com/bmw/enUS/showparts?id=WB73-...

Or if it's more like a canister, then you do have active steering.
e.g. http://www.realoem.com/bmw/enUS/showparts?id=WB73-...



hughcam

365 posts

126 months

Thursday 10th August 2017
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I picked up a pre lci e91 touring 335i manual which I think are pretty rare. It's in mint condition having been under BMW extended warranty for most of its life prior to my ownership and goes like a missile with the evolve remap (378 bhp).

It's got the professional nav which is nice even though it's a little dated.

The last owner also had a quaife lsd fitted at birds so it feels very similar to my e46 m3. The main difference being this has stronger brakes and a bit more thrust!

So glad I bought it!

ATM

12,404 posts

180 months

Thursday 10th August 2017
quotequote all
hughcam said:
I picked up a pre lci e91 touring 335i manual which I think are pretty rare. It's in mint condition having been under BMW extended warranty for most of its life prior to my ownership and goes like a missile with the evolve remap (378 bhp).

It's got the professional nav which is nice even though it's a little dated.

The last owner also had a quaife lsd fitted at birds so it feels very similar to my e46 m3. The main difference being this has stronger brakes and a bit more thrust!

So glad I bought it!
I've seen one for sale a few times, is it blue with a big brake kit?

zippyonline

Original Poster:

352 posts

127 months

Thursday 10th August 2017
quotequote all
That blue one with the big brake kit and pano roof? - I've seen that in the flesh (was taking a friend up to see it as it happened). It's a dog to put it mildly and way overpriced for it's condition.

There's some dodgy respray work on it, dodgy angle eyes which are on the wonk and they leak, the battery area had water around it, the parcel shelf/plastics holding it are broken - shadow codes scanned and show a dodgy thermostat for starters.

ATM

12,404 posts

180 months

Thursday 10th August 2017
quotequote all
zippyonline said:
That blue one with the big brake kit and pano roof? - I've seen that in the flesh (was taking a friend up to see it as it happened). It's a dog to put it mildly and way overpriced for it's condition.

There's some dodgy respray work on it, dodgy angle eyes which are on the wonk and they leak, the battery area had water around it, the parcel shelf/plastics holding it are broken - shadow codes scanned and show a dodgy thermostat for starters.
What brake kit is on it?

bmwmike

2,866 posts

69 months

Thursday 10th August 2017
quotequote all
zippyonline said:
That blue one with the big brake kit and pano roof? - I've seen that in the flesh (was taking a friend up to see it as it happened). It's a dog to put it mildly and way overpriced for it's condition.

There's some dodgy respray work on it, dodgy angle eyes which are on the wonk and they leak, the battery area had water around it, the parcel shelf/plastics holding it are broken - shadow codes scanned and show a dodgy thermostat for starters.
Do you mean this one? http://www.autotrader.co.uk/classified/advert/2016...

It's been for sale for a long time and I've wondered why.

Edit.. probably not.. no pano roof.

ATM

12,404 posts

180 months

Thursday 10th August 2017
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hughcam

365 posts

126 months

Thursday 10th August 2017
quotequote all
Nope mine is titan silver and it's a minter🙂

hughcam

365 posts

126 months

Thursday 10th August 2017
quotequote all
Nope mine is titan silver and it's a minter🙂

ATM

12,404 posts

180 months

Thursday 10th August 2017
quotequote all
hughcam said:
Nope mine is titan silver and it's a minter??
So you think the brakes on the 335i are better than an e46 m3?

hughcam

365 posts

126 months

Thursday 10th August 2017
quotequote all
ATM said:
So you think the brakes on the 335i are better than an e46 m3?
They are miles better than my e46 M3 for road use yes. That's standard compared with standard and the e91 has just had discs and pads alround.

The only thing I'm not too keen on is the level of servo assistance is much higher in the e91.



zippyonline

Original Poster:

352 posts

127 months

Thursday 10th August 2017
quotequote all
ATM said:
zippyonline said:
That blue one with the big brake kit and pano roof? - I've seen that in the flesh (was taking a friend up to see it as it happened). It's a dog to put it mildly and way overpriced for it's condition.

There's some dodgy respray work on it, dodgy angle eyes which are on the wonk and they leak, the battery area had water around it, the parcel shelf/plastics holding it are broken - shadow codes scanned and show a dodgy thermostat for starters.
What brake kit is on it?
Unknown - they're painted blue with an "m_power" decal on it...




hughcam said:
ATM said:
So you think the brakes on the 335i are better than an e46 m3?
They are miles better than my e46 M3 for road use yes. That's standard compared with standard and the e91 has just had discs and pads alround.

The only thing I'm not too keen on is the level of servo assistance is much higher in the e91.
Interesting. If you go very quickly off the throttle and hit the brake - it will have preloaded everything so it's quicker brake (i.e. it just bites), and I find that unnerving if you're not actually braking in a panic (which I don't think I have in years!).
It's also interesting how the 335i is specced with actually bigger brakes than the 330i - must be some reasoning for that. If I have a spare weekend soon, I might actually fit my f30 brembo's... I think I might even go all nerdy and measure piston sizes, and perhaps do a controlled hard braking over the same bit of road to see if there's an appreciable difference.



ATM

12,404 posts

180 months

Thursday 10th August 2017
quotequote all
Does anyone find the standard brakes lacking?

What do you get with the BMW Performance Kit - I've seen the fancy calipers but are the discs bigger too?

zippyonline

Original Poster:

352 posts

127 months

Thursday 10th August 2017
quotequote all
ATM said:
What do you get with the BMW Performance Kit - I've seen the fancy calipers but are the discs bigger too?
Here you go. https://www.turnermotorsport.com/t-brakes-F30-Brak...

The "BMW Performance" calipers for the E9x range are that yellow/green colour with millions of pistons and smaller diameter discs - some reckon it's downgrade over the 335i brakes!

ATM

12,404 posts

180 months

Thursday 10th August 2017
quotequote all
zippyonline said:
ATM said:
What do you get with the BMW Performance Kit - I've seen the fancy calipers but are the discs bigger too?
Here you go. https://www.turnermotorsport.com/t-brakes-F30-Brak...

The "BMW Performance" calipers for the E9x range are that yellow/green colour with millions of pistons and smaller diameter discs - some reckon it's downgrade over the 335i brakes!
So what's involved with fitting this F30 kit to the E91?

Swervin_Mervin

3,363 posts

199 months

Thursday 10th August 2017
quotequote all
ATM said:
zippyonline said:
ATM said:
What do you get with the BMW Performance Kit - I've seen the fancy calipers but are the discs bigger too?
Here you go. https://www.turnermotorsport.com/t-brakes-F30-Brak...

The "BMW Performance" calipers for the E9x range are that yellow/green colour with millions of pistons and smaller diameter discs - some reckon it's downgrade over the 335i brakes!
So what's involved with fitting this F30 kit to the E91?
Hopefully Zippy's going to show us this w/e wink

ATM

12,404 posts

180 months

Thursday 10th August 2017
quotequote all
Swervin_Mervin said:
ATM said:
zippyonline said:
ATM said:
What do you get with the BMW Performance Kit - I've seen the fancy calipers but are the discs bigger too?
Here you go. https://www.turnermotorsport.com/t-brakes-F30-Brak...

The "BMW Performance" calipers for the E9x range are that yellow/green colour with millions of pistons and smaller diameter discs - some reckon it's downgrade over the 335i brakes!
So what's involved with fitting this F30 kit to the E91?
Hopefully Zippy's going to show us this w/e wink
Roger that.

I've still got a big AP brake kit for an E39 M5 in my lock up. I should probably just sell it but I keep thinking about getting some brackets made to fit it to something else.

ATM

12,404 posts

180 months

Tuesday 15th August 2017
quotequote all
I've ordered Z4 35is front discs which I believe are a direct fit but weigh a lot less due to being 2 piece. Now I need to decide on what pads to order. Cost £409.98 from Euro Car Parts with free delivery. Those are pre dicsount prices. I got 36% off.