Hay all Ive finally come to the conclusion that the only gain in modding the aurion for some kind of improvement in performance is the y-pipe. I seen a thread here a camry that ran a 13.8 quater mile replaced the restrictive y-pipe and got his car tuned by special friends in toyota. Ive seen lots of threads about the aurion cant be tuned. There has to be some way u can tune the aurion. Can anyone shed some light theres gotta be a way and obviously there is a gain in performance if theres an american camry running 13.8 with just the y-pipe and tune. Cheers Kurt