yeh, i had the same. i had a resonator delete done when i bought the car last year, they said about fitting a full custom system and said it would be around 5-600! but that would include backboxes, silencers and new y pipe and im pretty sure a decat too! i litterally just want as straight a pipe as possible from the Y and no backbox, just my oem tips attached, so hopefully shouldnt be too expensive! (theoretically)