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  #37  
Old 10-16-2013, 06:34 PM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

Confirmed, I do have the ventilated rotors on my jeep.
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  #38  
Old 10-17-2013, 07:31 AM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

I doubt it's a problem but how do you know the ABS is still setup correctly for the new breaking behavior?

There might be parameters in the abs that are fine tuned for the different breaks.

I'm not saying it is a problem, but I'd be concerned it could be

It may self cal every time abs fires.
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  #39  
Old 10-17-2013, 08:20 AM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

The ABS only fires when it calculates slippage, It calculates slippage by determining speed and inertia, which wheels are locked up compared to wheels that are in motion, and some also use how depressed the brake pedal is.
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  #40  
Old 10-22-2013, 02:32 PM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

I haven't had any ABS issues; no problems at all but much better feel on the braking than SD.
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  #41  
Old 10-22-2013, 09:34 PM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

Quote:
Originally Posted by Evolv0 View Post
The ABS only fires when it calculates slippage, It calculates slippage by determining speed and inertia, which wheels are locked up compared to wheels that are in motion, and some also use how depressed the brake pedal is.
And none of the parameters you list tell it how fast or how much to pulse the breaks. Which is now different. You said it was a huge difference. It may need to know too. Let's just say it wouldn't surprise me either way if it should know which break system is installed. Maybe it even adapts.

It would also be extremely difficult to test if ABS is not as optimal as it was.

Just saying it feels good, is kind of risky.

No doubt it feels better in normal breaking.

It may also be factored into the 4WD Traction Control.

Unless you know first hand and have seen the code, you (or I) don't know. But you can certainly speculate it's not a parameter.

Even if it's off a bit, it may be minimal. But, personally I'd confirm it before making the change. But that's just me.

On my wifes VW CC, I have to use the OBDII interface when just changing out the break pads !!! with the same ones.
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  #42  
Old 10-23-2013, 07:46 AM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

Quote:
Originally Posted by mswlogo View Post
And none of the parameters you list tell it how fast or how much to pulse the breaks. Which is now different. You said it was a huge difference. It may need to know too. Let's just say it wouldn't surprise me either way if it should know which break system is installed. Maybe it even adapts.

It would also be extremely difficult to test if ABS is not as optimal as it was.

Just saying it feels good, is kind of risky.

No doubt it feels better in normal breaking.

It may also be factored into the 4WD Traction Control.

Unless you know first hand and have seen the code, you (or I) don't know. But you can certainly speculate it's not a parameter.

Even if it's off a bit, it may be minimal. But, personally I'd confirm it before making the change. But that's just me.

On my wifes VW CC, I have to use the OBDII interface when just changing out the break pads !!! with the same ones.


MSWLOGO:


What you are proposing is not an issue at all, the ABS system is unmolested so all signals and sensitivity parameters remain the same.

Since the traction control is also tied to difference in wheels speed and throttle position that system is unaffected too.

I have been driving almost daily on my full upgrade and the largest contributer to braking performance are the tires. The OEM Michelins gave good performance in the wet and dry with the brake upgrade but the Pirelli Scorpion STR's I replaced them with are sketchy on wet pavement which causes the ABS to kick in for sudden stops on downward slopes. But the vechicle always remains in control.

When the research was done to determine the difference in parts the key factor was the the from caliper was used by both Options. Even the SRT uses the same booster and master cylinder which is why some have upgraded to the SRT caliper with no issue with ABS or traction control.

I have owned a few VWs in my time and was considering a CC so I know the need for the VCDS is to deactive the electric parking brake during a pad change.

When you understand how subsytems on vehicle function then it does not seem so complicated when you want to upgrade a component of a system.
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  #43  
Old 10-24-2013, 04:06 PM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

Excellent write up, and thanks for the parts list. I'll definitely be doing the front upgrade myself in the next few weeks. The SD brakes are (IMO) undersized for the DD, and have a tendency to fade. Hopefully the larger surface area and a good set of ceramic pads will cure the issue.
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  #44  
Old 10-28-2013, 10:20 AM
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Re: CONFIRMED! Heavy duty brake bolt on implace of ND brakes

Thanks wjs81866 for posting your experience and things to lookout for!! Good to know.
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