Okay guys I have a 2000 EX coupe with a b18b1 I'm having a problem with it misfiring under 3000 RPM it sounds like a subi and it does not like to stay at a idle without wanting to die I have done a compression test and all cylinders are good. I've cleaned the injectors new cap and rotor, put in a good ignition control module, new spark plugs, new fuel filter. I checked timing marks and it's on time! But here's the crazy part I unplugged the vacuum line from the fuel pressure regulator and it stays at idle just fine only thing is it does idle at 1500rpm! I've been chasing problems for a month now. The car ran fine before this problem I was driving it one day and it just started sputtering out of no where when I push on the gas pedal! Thank you for any info on what this could be!