So I'm new to the group,and new to online discussion threads all together, with the exception of Facebook. I drive a 1994 Mustang GT 5.0 v8, I have dual Flowmaster straight pipes, shorty headers with no o2 sensors (not sure who they're made by they came with the car) , and k&n intake . I live on a tiny desert town where only one shop has the right diagnostics to hook up to it,last time I went there they cracked my windshield and denied it. I've been having a power surging issue, it idles fine,and sounds good when u rev it up , but when u start moving it sounds horrible and has power surges. I've replaced almost every sensor, plugs,wires,cap,rotor,but still can't find why it's sputtering. Before it started getting bad I noticed when in pushed in the clutch while driving rpms would go up,everybody told me I was just being picky and bout my car and it was fine,but it drove me crazy. And then that problem grew into the sputtering, but no check engine light came on