A month ago I did the gas kill switch except I did it wrong. I just added a 3amp switch along the line. A few weeks later I notice that at low RPMs(2000 - 3000 ) the engine sputters a little and jerks. Not too often, but noticeable. So today I went back and took out the switch. My car drives fine for an hour. After an hour, I begin to notice the same problem and the more I drive my car the more it sputters. It doesn't jerk in 1st gear, only 2nd to fourth but as soon as I hit 3000 RPMs it drives smooth. I have premium gas in there, the car has 90 k miles and its a 95 GS-R. What can I do to fix this, its really really really annoying!!!???

Thanks

 

ended up being an injector....