hi everyone i have a 1995 r33 gtst, only things done are an apexi filter, full 3'' turbo back (no cat), and a fmic, hks blow-off..... so car idles fine and cruises ok but once you start pushing on the gas pedal my afr's (its a narrow band) just start droppping, to as low as 10 to 1 and as soon as i hit 5 psi i hit fuel cut. So my buddy has nistune and we plugged his laptop into my car and watch what its doing and everything looks normal expect for my maf and injector which under any kind of load max out, so we thought the maf was defective and i sourced a compatible maf and install it.... no different, try removing the blow-off and installed the factory one..... no difference, checked all the piping for leaks.... all is tight and no leaks at present time.... has anyone one had this problem or something similar? the motor is a r33 series 2 motor.