Hi, if i reved the car whilst stationary i will get a slight misfire from the exhaust, no odd noises from the engine. If im cruising with slight load on the throttle it will misfire and sound like a subaru slightly, if i put my foot down theres nothing. Boosting fine and idleing well. But when under slight load it will make this noise. Changed sparks, coil pack, afm, fuel filter, thermostat.