Quote:
Originally Posted by whunter
A few thoughts:
* Vacuum supply issue ?
* Damaged/defective WRXtra Brake hoses ?
* Bad new master or booster ?
* The system now exceeds the master design capacity ??
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If there was a vacuum supply issue would that not make the booster less effective? Wouldn't that make the pedal harder?
I dont think they are damaged/defective. Two I installed a few months ago, largely made no difference. The other two I had my shop install (new hardlines were needed).
I am not sure about the master. It is new and was $250 or so.
I know several people over on 190Rev that ran the stock 2.6 master/booster with the bigger calipers. They didn't have this same problem. RC Imports, the shop that, I think, originally did the brake upgrades used the stock master/booster. I emailed them and they said thats what they use on their race car 190E's. The stock master/booster with bigger calipers.
Even though I've bled the lines with the Power Bleeder for some reason I think it might be air still in the system. Assuming that the parts are good (as most are new or sub 2 years).....
After watching some videos and some suggestions on the 190Rev I bought one of these:
Phoenix Systems V-12 DIY Reverse Brake Bleeder Walkthrough - YouTube
It was only $65, so we'll see what that does. I know that if I pump the brakes a few times, I eventually do get some pressure feedback on the pedal. Posts over on a Porsche forum said they had the same thing, and then they used that bleeder tool and it was fixed.