ok so my car starts up just fine... but if i run it hard, sometimes it dont wanna go to redline... but if i push it harder it will drive fine again... i was told that the fuel pump was changed at one time w/vinum one.. an i changed the fuel filter an it still throwing a code 43... its a 95 b18b motor running a obd0 ls ecu...

someone told me either the fuel regulator or the fuel pump might be clogged... how do i check those things....

thanks guys an please so shit talkin