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996 Brake bleeding & need for PS2 diagnostic device

Brakes

Vehicle Information: Year: 2001; Body Type: Coupe; Total Mileage: 10350;

In my 2001 996 Coupe with PSM, I've bleed my own brakes this summer with the Motive Bleeder. I know I'm using the device properly as friends sometimes keep an eye on things over my shoulder, etc., but it seems like the brakes need to be bleed too often - sometimes after each DE session. Today a Porsche shop owner told me that I should be using a PS2 diagnostic device(along with the Motive Bleeder) when bleeding to ensure that the job is done right. He explained that when the PS2 system is connected to the ECU and setup it tells the ABS and PSM to run through a cycle or re-set themselves - thus fully completing the brake bleeding process. This is the first I've heard of this. What do you think? Do I need a $10,000 diagnostic tool to bleed the brakes in my PSM equipped car. Please advise.

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