So I Autocross. A '94 5th gen hatchback.
It has the d15b7 motor. Basic bolt ons.
It also has the '89 CRX Si cam in it.
Front pads are Cobalt GT-Sport/ Advance Auto rotors.
Rears are stock (I guess). Fluid is Valvoline Synthetic stuff.
Car is in tune. No probs.

Now put yourself on the Autocross course going 10/10ths.
Trailbraking like crazy. 2/3 through it, full speed, foot to the floor.
Now, on the brakes again, the pedal is a ROCK.

Any ideas? Vaccuum? Booster? Dry rotted hoses?
Cam/vaccuum thing? But the cam is dag gone mild (it is a factory 89 Honda).

 

Try again...