Brake not as effective and making a hissing noise

[mohammadhuzaifa4]

Have a corolla 2012 that have started to lose its braking power. Brake are only effective after half the pedal has been pushed down even. Braking distance has gone up by a lot. Got my master cylinder replaced with a new one two years ago and it was all good for a year. Then I got it replaced with a kabuli a few months ago and I think it has gone bad as well.
Also their is a hissing noise when I apply brakes. How do I check my brake booster?
Any good brake guys in Karachi?

Everything else has been checked.
@capsat

[capsat]

does brake fluid cup need top up ??
jameel autos irshad ahmed 0300 223 7538 shahrae quaideen 10 am to 7 pm weekdays only.

[asimkhalidfb]

Have you checked pads and rotor thickness? Which brand are the pads? Have you ever changed brake fluid?

[mohammadhuzaifa4]

Yes, had pads recently replaced, rotors are in good condition and had the whole system bled. Pads are akebono

[asimkhalidfb]

So braking distance increased after pad change?

[asimkhalidfb]

Which master cylinder did you get as kabuli? Some other similar part or oem?