Brake upgrade

[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.

[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.

[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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[iichel]

Because the distribution between front and rear brake pressure meds to be ok for good braking and braking stability

[grpolo]

Im not an expert but abs sensors measure wheel rotation, its got nothing to do with rotor size...

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[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.

[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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[iichel]

No, not until you lock up a wheel or the rear goes really light.

[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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[iichel]

If you have VCDS or something similar, you can also adjust the coding of the abs yourself.

[grpolo]

The headlights ?!?!?!

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[iichel]

the abs. sorry. I'm doing 27 things at the same time. i corrected it.

[grpolo]

Lol no problem mate, i have obd11, but i wouldn't know what number to code on ABS...

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[iichel]

Can you post your current long coding of the abs?

[grpolo]

Let me see if i can pull it from obd11 offline...

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