i did the whole rear disc brake with the 40/40 Prop. valve even bought a new check valve. but here is the thing, i don't brake much better then the stock drums. and the pedel is extremely stuff. i've heard different stories from a couple buddys and 1 says that its not braking good because i still have a stock cx front disc. some say its my prop. valve. i when i bought the rear disc it came with everything even booster and master cylinder should i just put the DA booster and master cylinder on? or is there any other way to have a good feeling pedel back?

 

Pump your brake pedal till its hard and start your car.
Does the pedal sink a little like it normally should?

If it does not you could either have an issue with the booster not getting vacuum or that the booster has gone bad.

There could be a few other issues too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by _BEN_ &raquo;</TD></TR><TR><TD CLASS="quote">Pump your brake pedal till its hard and start your car.
Does the pedal sink a little like it normally should?

If it does not you could either have an issue with the booster not getting vacuum or that the booster has gone bad.
</TD></TR></TABLE>
Good call.
OP, if you replaced your booster check valve, you've probably got a bad diaphragm or bad seals in your booster. You can improve your braking a lot by swapping in a master cylinder from an Integra RS (front and rear disc w/o ABS), have this setup on my '97 CX and it stops like a champ.