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Hi mate, sorry about the delay, was out of the country at the weekend, and yes in that vid I had a standard 08 STI just with a ppp backbox , i felf the noise really came when I removed the centre resonator box though in conjunction with the ppp box.
Is this video on facebook yours? Reason i ask is i have just bought a ppp kit (back box and decat) and am fitting on saturday. Is this wat you have on yours in this video? Just wondering how it will sound?