I have a 92 SE-R with JDM motor(duh) and heres my problem. My car runs like poo. Between 2,000 and 3,000 I have a serious hesitation problem it does it in every gear. Also the car runs really strong all the way up to 5,600 and then it falls off. Local Sentra guys tell me their cars pull all the way up to 7,500 why doesn't mine. Just to get a few things out of the way I have done a minor tune-up ie NGK plugs,Wells cap,Wells rotor,NGK wires. Since I did the tune up the car runs stronger but the problem is still there. Can anyone help me out.