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Brake upgrade
Posted: Thu Aug 06, 2020 11:12 am
by PoloGTI180
Hello,
I would like to upgrade the brakes of my 6R GTI to 6R WRC, I think that they use same caliper with different bracket and a bigger rotor. Anybody has done this mod?
Thanks.
Re: Brake upgrade
Posted: Thu Aug 06, 2020 11:51 am
by iichel
Yep, you need to upgrade the caliper carrier and the disc at the front. But the more tricky part is to code the ABS unit.
There is a coding for a GTI CTHE engine with 312mm fronts and 232mm rears. But it will only work on ESP9.0i and I'm not sure it will accept 312 + CAVE engine.
Re: Brake upgrade
Posted: Thu Aug 20, 2020 5:16 am
by grpolo
Why would you need to code the ABS? I upgraded my 6R Tdi, from 256mm to 288mm, changed calipers, carriers, rotors, knuckles, the braking difference is day and night i did not recode anything and i haven't noticed any problems...
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Re: Brake upgrade
Posted: Thu Aug 20, 2020 6:56 am
by iichel
Because the distribution between front and rear brake pressure meds to be ok for good braking and braking stability
Re: Brake upgrade
Posted: Thu Aug 20, 2020 6:59 am
by grpolo
Im not an expert but abs sensors measure wheel rotation, its got nothing to do with rotor size...
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Re: Brake upgrade
Posted: Thu Aug 20, 2020 7:34 am
by iichel
The ABS/ESP unit also divided the brake pressure from the brake pedal between the front and rear axles. I.e.70% to the front and 30% to the rear with 256mm fronts 232mm rears.
If you have larger rotors, 288 instead of 256mm at the front, you want to have lower pressure. If you still have 70/30 the front axle will brake much stronger. So therefore you need i.e. 60/40.
Re: Brake upgrade
Posted: Thu Aug 20, 2020 7:41 am
by grpolo
Yes ok but due to EBV electronic brake variator, wouldn't the braking force be applied correctly since it reads and adapts on the fly on the braking conditions?
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Re: Brake upgrade
Posted: Thu Aug 20, 2020 7:50 am
by iichel
No, not until you lock up a wheel or the rear goes really light.
Re: Brake upgrade
Posted: Thu Aug 20, 2020 8:04 am
by grpolo
Don't know have not noticed anything bad about my setup just much better braking, no early ABS engaging or other noticable problems, i will ask a brake specialist though when i have the chance...
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Re: Brake upgrade
Posted: Thu Aug 20, 2020 8:41 am
by iichel
If you have VCDS or something similar, you can also adjust the coding of the abs yourself.
Re: Brake upgrade
Posted: Thu Aug 20, 2020 9:02 am
by grpolo
The headlights ?!?!?!
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Re: Brake upgrade
Posted: Thu Aug 20, 2020 9:15 am
by iichel
the abs. sorry. I'm doing 27 things at the same time. i corrected it.
Re: Brake upgrade
Posted: Thu Aug 20, 2020 9:28 am
by grpolo
Lol no problem mate, i have obd11, but i wouldn't know what number to code on ABS...
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Re: Brake upgrade
Posted: Thu Aug 20, 2020 10:32 am
by iichel
Can you post your current long coding of the abs?
Re: Brake upgrade
Posted: Thu Aug 20, 2020 10:45 am
by grpolo
Let me see if i can pull it from obd11 offline...
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