sooo just bought a 09 SE, all stock.. but recently i took off those HUGE cats. so all i have is the header 4 to 1 to Y. and its LOUD just like i wanted... how ever i am concerned out back pressure. will it hurt my motor to run it like that? burn my valves? i relize i loose a little low-end power but im ok with that. if it will hurt it and i have to get and aftermarket exhuast, will it hurt the motor to run it with the baffel out all the time?

thanks matt