forced1nyc Posted March 6, 2009 Share Posted March 6, 2009 Hello all. After replacing the front calipers and rotors with the WRX set, the pedal doesn't want to hold pressure. The pedal drops to the floor immediately after I finish bleeding the calipers. I thought that I had a leak, from the calipers or the lines. The calipers are new. The lines are oem that came with the car. Could it be a problem going from a 2 piston to 4? Is there a proportion valve that I might have to change/upgrade? Do I have to upgrade my master cylinder? Please help because she is on stands, without brakes. Thanks *FOLLOW UP* AFTER READING THE BRAKE STICKY, I FOUND THE PROBLEM. R.I.F. Link to comment Share on other sites More sharing options...
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