I bought a 90 integra for 500 bucks. Ran, drove. Just needed to put the alternator in. Well ya, first i replaced the clutch, valve cover gasket, exhaust, distrubtor cap, rotor, plugs, coil, wires, flush coolant system, tie-rods, fuel filter, fuel line, pads, battery, o2 sensor, oil pan gasket, thermosat. So pretty much 1,000. and not even built yet. Plus i have a wierd idle. like it isnt getting gas. whence u push it pass 2000 it chokes out. my idle flux 500 to 2500. hard to drive like that. my ecm throws a code 43 which is fuel system error. as i said i replced the fuel filter that had like black stuff in it, the o2 sensor which was shot, and the primary fuel line from the gas tank. so that crosses that off. i dont want to buy a fuel pressure regulator for 130 bucks so does anyone have any comment on that. so really this integra is a POS. right now but i really need some feedback. I just want to get this car running.