2.5 to 3.0 Exhaust

roccodart440 said
So with that, the 2.5 is fine, the 3" is optimal. There is no reason to choke an exhaust down in size after the collector.

The X-pipe will not hurt the sound of your engine.

Agreed! 100%
The X will sound different once your around 4,000 - 4500 rpm. By then, you have no concern. Everyone will hear the difference and be blown away.