i m curious about the 91 hatch Si's stock fuel pump, how does it compare to say a fuel pump from a teg? would it be adaquate(sp.?) for 11.1.1 compression? what about the whole fuel system? i just got done w/ my little build up, Ls w/ Pr3 pistons ect. and i started up the motor and i hear a noise that sounds like pebbles are being droped into my cylanders. so that would be detionation. and my entire fuel system is stock, so would it be adaquate? im about to get a S-afc or help combat this. i just wanna hear some opionions. thanks

If the motor was cold and knocking it probably isn't pinging. Are you sure the valve releifs in the pistons cleared the valves? The stock fuel pump should be adequate- as long as it is functioning properly.