having trouble with my rear brakes . My brake petal bottoms out the first time I step on them and even if I pump them up there still weak. My fluid level is good and I bled them. Pads are ok just seems like the plunger is bad.
I have the under seat K&N and gipro with atre. I'd like to know if I need to do a tune (prefer not to) if I remove the secondaries. Everything else is still standard so far.