I am wondering if anyone has full bolt ons and notices a significant gain. I have MPX Header, High flow Catalytic Converter, Bored Throttle body, Light Weight Crank shaft pulley, Light weight water pump pulley, Injen Cold air intake, autolite copper plugs and mpx exhaust. It still feels like it struggling to accelerate. Like the ecm makes it cut fuel to increase mpgs. Its hard to explain. Im not going to turbo it and i think all i can add now is a Syke tune. Road Race Motorsports is pretty much a theif now;they take your money and never ship anything. But if i could actually expect to recieve a part i would order a spectrum tuner. So has anyone put the syke tune on and noticed a big difference. I think they're asking like 500 for it.