OK, here's the whole story... For whatever reason I had to change my front hubs on my Evo IX '06 EUDM. Mechanics noticed my front driveshafts are in a bad shape so I decided to replace them with a used one from a
rally car with a very low mileage on them (rally guys remove stock IX driveshafts and install new ones from Evo VII as they are stronger so stored IX stock ones are like brand new).

After I did all of that the car stopped braking properly. On a heavy / hard / aggressive braking it behaves like I'm braking on the ice, unblocks front wheels and car pulls to the right
Once during the braking ABS light when ON and system stopped working completely - there was no error code stored unfortunately

Its definitely NOT brake calipers as I've installed my summer brakes with a bigger 6 piston Brembos and everything works the same way.

If I turn ABS off by pulling out the fuse car brakes OK, clearly moves straight, no pulling to any side.

I have now captured logs from the front ABS sensors using MUT-3 S.E. and they are the same up to ~100 km/h (car brakes OK at lower speeds indeed), but after ~100 km/h the numbers
are DIFFERENT (please see attached picture and MUT log).

Question: Did mechanics damage front left ABS sensor or do I have damaged reluctor / ABS ring on the driveshaft (visually it looks absolutely OK). What should I do at this point to fix the issue?

?!?

Thank you for your help!




Actual CSV log is also attached.