X-Pipe all the way
The X-pipe is going to allow your car to breathe better and the flow of the exhaust will give you better HP. The low rumble is really not going to be affected by the pipe change. The main reason you have the rumble inside the car is the flowmaster. I love the outside sound they give, but the rumble inside the car is the drawback to them. I went with forza-flow myself to get the rich tone flowmaster gives but without all the vibration and echo inside the car. The change from H to X-pipe shouldn't change the echo much at all.
The X-pipe is going to allow your car to breathe better and the flow of the exhaust will give you better HP. The low rumble is really not going to be affected by the pipe change. The main reason you have the rumble inside the car is the flowmaster. I love the outside sound they give, but the rumble inside the car is the drawback to them. I went with forza-flow myself to get the rich tone flowmaster gives but without all the vibration and echo inside the car. The change from H to X-pipe shouldn't change the echo much at all.
