I have seen feedback from people that have used the brake bleed (using Motiv bleeder) DIY posted by Anthony some years ago that even after following the process as documented they still have poor pedal feel. I was one of them.
I believe I have found the solution... have done it twice on my car and would like someone else to
follow these steps and report feedback.
The focus of my findings: The ever mysterious subject of cycling the ABS pump to perform a full bleed. There are many posts discussing it but none that I could find that fully explain how to use it to get the brakes 100%.
Here is the procedure I followed:
1- Drive car and do several aggressive stops (I did several 60mph to 30mph stops).
2- Park car in garage or workspace in preparation for bleed
3- Connect with Vagcom and connect to Brake and then Output tests
4- Execute the first output test which activates the ABS pump (I activated for 8 seconds then stopped).
5- Throw car up on jacks stands then follow the Brake Bleed DIY from start to finish. Note that through steps 4 reservoir is untouched bleeder not yet unboxed and all I am doing is the output test.
I did this twice last week in preparation for a track day. Since I had two large cans of OEM brake fluid and since it is cheaper than the Motul RBF 600 I figured I could experiment.
So with my street pad brake setup (hawk HPS) I followed the above procedure. Gained an inch of extra brake pedal feel!!
Two days before the track day I swapped to new rotors and new race pads, drove around for 30 mins doing some aggressive braking then pulled in to the garage for bleeding. This time with Motul RBF 600. Followed the same process as describe above and had truly mind blowing brake performance (albeit in the rain) at the track logging over 100 on track miles across 4 sessions.
Need someone to follow this procedure and report back your findings
Track Day pics