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      04-05-2018, 07:00 AM   #23
domino_z
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Is coding necessary? What’s actually being coded?
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      04-05-2018, 06:49 PM   #24
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Quote:
Originally Posted by domino_z View Post
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Is coding necessary? What’s actually being coded?
Booster logic and integration with ABS/DSC.
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      04-05-2018, 06:52 PM   #25
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Quote:
Originally Posted by Tempe Mendoan View Post
What is the difference besides the part number? Which one is more powerful?
The CCB booster takes into account the higher friction coefficient of the CCB discs compared to iron discs -therefore it is the less powerful of the two.
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      04-05-2018, 08:09 PM   #26
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Quote:
Originally Posted by Encanto View Post
The CCB booster takes into account the higher friction coefficient of the CCB discs compared to iron discs -therefore it is the less powerful of the two.
Are you sure about this?

My understanding is that it is due to the greater force multiplication ratio from the increased piston area of the CCB callipers. Since the piston area of the CCB callipers is greater than the one of the iron rotors, and since both use the same master cylinder, a given force on the brake pedal will yield a higher clamping force on the CCB rotors, hence why less boost assist is needed.
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      04-05-2018, 08:17 PM   #27
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The brake booster install is the main issue getting me over the line doing the retro - it's going to be a Kent of a job to swap out and then makes removing for resale another problem

I'd be inclined to install all the hardware and go for a drive with steel brake booster first to see if they aren't too grabby/hard to modulate light pressure

Encanto can you provide me the exact coding line that needs to be changed?

I wonder if the kit ships with instructions on how to code it or if it's kept as dealer ip - if the later I'll have to buy the kit here at a much higher price so dealer can complete install
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      04-05-2018, 09:42 PM   #28
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Quote:
Originally Posted by CanAutM3 View Post
Are you sure about this?

My understanding is that it is due to the greater force multiplication ratio from the increased piston area of the CCB callipers. Since the piston area of the CCB callipers is greater than the one of the iron rotors, and since both use the same master cylinder, a given force on the brake pedal will yield a higher clamping force on the CCB rotors, hence why less boost assist is needed.
Check the OEM CCB document in this forum... it talks about coefficient of friction, not increase of piston area. To me that means the rotors, not necessarily the calipers as you can increase the friction without increasing the piston area -by only changing the composition of the rotor or the pads.

I may be wrong in my interpretation, though.
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      04-05-2018, 09:48 PM   #29
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Quote:
Originally Posted by domino_z View Post
The brake booster install is the main issue getting me over the line doing the retro - it's going to be a Kent of a job to swap out and then makes removing for resale another problem

I'd be inclined to install all the hardware and go for a drive with steel brake booster first to see if they aren't too grabby/hard to modulate light pressure

Encanto can you provide me the exact coding line that needs to be changed?

I wonder if the kit ships with instructions on how to code it or if it's kept as dealer ip - if the later I'll have to buy the kit here at a much higher price so dealer can complete install
For sure 2NK must be added to the VO. What else, I don't know.
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      04-06-2018, 09:22 AM   #30
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Quote:
Originally Posted by Encanto View Post
Check the OEM CCB document in this forum... it talks about coefficient of friction, not increase of piston area. To me that means the rotors, not necessarily the calipers as you can increase the friction without increasing the piston area -by only changing the composition of the rotor or the pads.

I may be wrong in my interpretation, though.
Can you post link to said document? Because I can't reference to what you are alluding to in the various BMW CCB documents...
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      04-06-2018, 09:55 AM   #31
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Quote:
Originally Posted by CanAutM3 View Post
Can you post link to said document? Because I can't reference to what you are alluding to in the various BMW CCB documents...
Section 5.3.
Attached Images
File Type: pdf M Carbon Ceramic Brake System.pdf (1.18 MB, 592 views)
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      04-08-2018, 06:23 AM   #32
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Quote:
Originally Posted by Encanto View Post
Section 5.3.
for the link. You are right, it is pretty black on white on that document about the coefficient of friction.

However, the engineer in me can't help to think that the greater piston area in the calipers also has an effect, it's basic physics.
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      04-08-2018, 09:22 AM   #33
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Quote:
Originally Posted by CanAutM3 View Post
for the link. You are right, it is pretty black on white on that document about the coefficient of friction.

However, the engineer in me can't help to think that the greater piston area in the calipers also has an effect, it's basic physics.
Notice as well that this document is for the F1x (M5 and M6), which have the 6-piston front caliper standard.
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      04-12-2018, 10:33 AM   #34
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at what point did BMW equip these CCB on the M3 stock?
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      04-12-2018, 12:04 PM   #35
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Quote:
Originally Posted by foofighter View Post
at what point did BMW equip these CCB on the M3 stock?
Not sure what you mean ?

CCB have been offered as an option on the M3 starting with the launch of the F8X platform in 2014. They have never been standard equipment except for the M4GTS.
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      04-12-2018, 11:09 PM   #36
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Quote:
Originally Posted by CanAutM3 View Post
Not sure what you mean ?

CCB have been offered as an option on the M3 starting with the launch of the F8X platform in 2014. They have never been standard equipment except for the M4GTS.
I just didn't see it on the BMWUSA site when you go to build where it has that option...maybe i missed it

I just googled and for some inexplicable reason BMW took that option off the build page on their website

Last edited by foofighter; 04-12-2018 at 11:17 PM..
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      05-01-2018, 02:37 PM   #37
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https://www.ecstuning.com/b-genuine-...t/34112358378/

No master cylinder just the booster.
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      05-01-2018, 08:41 PM   #38
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Quote:
Originally Posted by spr View Post
https://www.ecstuning.com/b-genuine-...t/34112358378/

No master cylinder just the booster.
Yep that gets installed behind firewall and connects to brake pedal linkage inside the cabin

It's not an easy job given all the bracing around the front scuttle - you'd be half way there if doing a coil over install
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      05-01-2018, 09:38 PM   #39
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CCB (gold) brake calipers:
Front 6 pistons: 30/34/36mm = 52.7 cm^2 (68%)
Rear 4 pistons: 28/28mm = 24.6 cm^2 (32%)
Total: 77.4 cm^2

Iron (blue) brake calipers:
Front 4 pistons: 40/40mm = 50.3 cm^2 (67%)
Rear 2 pisotns: 40mm cm = 25.1 cm^2 (33%)
Total: 75.4 cm^2



Quote:
Originally Posted by CanAutM3 View Post
for the link. You are right, it is pretty black on white on that document about the coefficient of friction.

However, the engineer in me can't help to think that the greater piston area in the calipers also has an effect, it's basic physics.
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      05-02-2018, 04:45 AM   #40
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Gingerbread
Can you please explain what these figures represent? Are you comparing break pad surface area or something else?
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      05-02-2018, 07:51 AM   #41
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Quote:
Originally Posted by gingerbread View Post
CCB (gold) brake calipers:
Front 6 pistons: 30/34/36mm = 52.7 cm^2 (68%)
Rear 4 pistons: 28/28mm = 24.6 cm^2 (32%)
Total: 77.4 cm^2

Iron (blue) brake calipers:
Front 4 pistons: 40/40mm = 50.3 cm^2 (67%)
Rear 2 pisotns: 40mm cm = 25.1 cm^2 (33%)
Total: 75.4 cm^2
for the info. That means there is a negligible difference in caliper piston area, hence my previous assumption was incorrect.

Interesting to see the CCB have slightly more front brake bias.

May I ask for your source for the piston diameters?
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      05-02-2018, 07:52 AM   #42
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Quote:
Originally Posted by OzcarM3 View Post
Gingerbread
Can you please explain what these figures represent? Are you comparing break pad surface area or something else?
I gather those are the caliper piston diameters and the resulting total piston areas front and rear.
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      06-24-2018, 11:22 PM   #43
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Bump

Finally received my kit

Took ages to get an order out of bmw factory given these cars are going out of production

Still unsure about the exact coding required so will need to start process of finding a remote tuner who does

The plan is to install the booster, even though a small difference, if bmw went through trouble to offer another version it’s worth heeding their advise
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      06-25-2018, 02:06 AM   #44
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I got my kit fitted last week. Took an age also to get the kit. I’m sure your dealer would code this for you for a charge.
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