Ok so I'm driving on the highwayand go to pass a car and I floor it and my engine bogs down and doesn't want to accelerate. I think it's a fluke so I gradually give it more gas and it doesn't want to go past 4k? I put it in neutral and same thing. Nothing past 4k. So I think maybe at slower speeds it'll be ok and nope I was wrong. It has no get up and go when it's getting after 3k and stops accelerating at 4k.... any ideas where I should start? I just put new plugs and wires on less than 3k miles ago, just did the oil with synthetic again, changed the fuel filter.