Humm ok may be its just me.....but it makes me think that it must have been put there for a reason when designed by Seat, does it build up any pressure in it? As when i had the original exhaust it revved up much quicker and sounded louder when reeving at lower revs? Example: When i revved to 3-4k Revs it was loud compared to now where i have to rev like 5-6k? what about the new pipe from the cat back would that make any difference as its larger pipe?