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Does the C6 ECBM need the ECM for ABS to work?

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Old 03-21-2018, 12:39 PM
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Chad-1stgen
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Default Does the C6 EBCM need the ECM for ABS to work?

Hi,

Been doing some research on making a 2009+ C6 ABS EBCM work on a stand alone basis (or as close to it as possible). I found a thread on here where 1badtantrum eliminated the BCM, steering and yaw sensors which disabled active handling and traction control but ABS continued to function. Thread here:

https://www.corvetteforum.com/forums...-race-car.html

However, based on that thread he kept the CAN communications to the ECM. Will the ABS work if the CAN communications to the ECM are eliminated? I have an aftermarket ECM and engine harness.

Thanks for anyone that can provide feedback.

ETA: for a 2009+ that uses the Bosch unit with active sensors.

Last edited by Chad-1stgen; 03-22-2018 at 12:00 PM.
Old 03-21-2018, 02:18 PM
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0Adrian @ F.A.S.T.
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It looks like the stop lamp switch signal goes directly to the ECM and then through can data from the ECM to the ABS module. Thats one thing I see so far, maybe someone else can add more. Would rather do a BOSCH MOTORSPORT ABS. It would use the same 09+ wheel bearings. Price on those Bosch systems went down to around $7000.
Old 03-21-2018, 02:35 PM
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Chad-1stgen
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Originally Posted by Adrian @ F.A.S.T.
It looks like the stop lamp switch signal goes directly to the ECM and then through can data from the ECM to the ABS module. Thats one thing I see so far, maybe someone else can add more. Would rather do a BOSCH MOTORSPORT ABS. It would use the same 09+ wheel bearings. Price on those Bosch systems went down to around $7000.
I've been eyeing that system. Was hoping to try the OEM C6 ECBM first due to cost. Ends up being $8K with the communications cable and that is a nice reduction in cost compared to before but still not cheap!
Old 03-21-2018, 10:17 PM
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GSpeed
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Id recommend the E46 ABS system, if cost is a concern. Its an active system much like the Bosch, but at a fraction of the cost. It is obviously NOT the bosch race system, but still a performance ABS.

We installed a Motec M130 into a C5 with patchy stock ABS, and its currently getting the BMW system. Will update more as we know. It was slated for a used M4 system that fell through, then an M5 system, but ultimately settled on the BMW system.

Keep in mind if you use the Bosch system and need to feed the ECU digital wheel speed signals, youll need the Bosch Motorsport open collector signal splitter.
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Old 03-21-2018, 10:52 PM
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c5racr1
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So what needs to be done to do the e46 system, 09 up hubs and...
Old 03-24-2018, 01:04 PM
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Is the Teves system better than the C5 setup?

Will the C5 wheel speed signal work with the Teves, or does it need to be calibrated?



Originally Posted by GSpeed
Id recommend the E46 ABS system, if cost is a concern. Its an active system much like the Bosch, but at a fraction of the cost. It is obviously NOT the bosch race system, but still a performance ABS.

We installed a Motec M130 into a C5 with patchy stock ABS, and its currently getting the BMW system. Will update more as we know. It was slated for a used M4 system that fell through, then an M5 system, but ultimately settled on the BMW system.

Keep in mind if you use the Bosch system and need to feed the ECU digital wheel speed signals, youll need the Bosch Motorsport open collector signal splitter.
Old 03-24-2018, 02:36 PM
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Originally Posted by D K
Is the Teves system better than the C5 setup?

Will the C5 wheel speed signal work with the Teves, or does it need to be calibrated?
we don’t have hard data that it’s better, but the important part is that it’s standalone and proven with the BMW crowd.

The bmw/Teves system uses active sensors like the c7 and later 09+ C6.
Old 03-24-2018, 06:15 PM
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I guess the real question is why us it if the C5 system is good enough?

Have you raced with the Teves system? Is the balance ok?




Originally Posted by GSpeed


we don’t have hard data that it’s better, but the important part is that it’s standalone and proven with the BMW crowd.

The bmw/Teves system uses active sensors like the c7 and later 09+ C6.
Old 03-25-2018, 11:30 AM
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I don't want to speak for GSpeed but when I looked into it the advantage of the bmw system was it was proven to work on the track and it is a stand alone, self contained unit.
Old 03-27-2018, 09:34 AM
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Originally Posted by D K
I guess the real question is why us it if the C5 system is good enough?

Have you raced with the Teves system? Is the balance ok?

All of the cars we have used it with are race cars. We have a stock C5 getting one now, but its not stock brakes.

Originally Posted by crimlwC6
I don't want to speak for GSpeed but when I looked into it the advantage of the bmw system was it was proven to work on the track and it is a stand alone, self contained unit.
Thats correct. If you buy the early E46 pumps with the Eprom you can purchase a better ABS map, more geared towards race tires.
Old 04-01-2018, 04:16 PM
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c5racr1
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Do you plan on selling this as a package for the guys that don’t want to spend 7k for the m4 system. Personally it would be worth it to me in the 3k range. I checked out the parts and they can be located for about 2200, that is including a stand-alone harness from turner BMW. What do you think?
Old 04-02-2018, 09:58 AM
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Originally Posted by c5racr1
Do you plan on selling this as a package for the guys that don’t want to spend 7k for the m4 system. Personally it would be worth it to me in the 3k range. I checked out the parts and they can be located for about 2200, that is including a stand-alone harness from turner BMW. What do you think?

once the system is tested, we will consider it. Vorshlag has already done this, let me see if they want to add anything.
Old 04-08-2018, 10:25 PM
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Originally Posted by GSpeed
All of the cars we have used it with are race cars. We have a stock C5 getting one now, but its not stock brakes.



Thats correct. If you buy the early E46 pumps with the Eprom you can purchase a better ABS map, more geared towards race tires.
So you can modify/flash different maps for abs function into the E46 unit?
Old 04-09-2018, 10:05 AM
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Originally Posted by 383
So you can modify/flash different maps for abs function into the E46 unit?
only on very early 1999 units, that had EPROMs.

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