well just joined the new engine club... heard alot about it idk what to say but my friend who works at the mazda dealership told me i would be taking it in for a new engine sooner or later well he was right after a gruling 4 mile drive of backfiring and other things i cant explain... engine had major carbon buildup and major loss of power so as of monday i will have a new motor and clutch in my car saved 700 for labor so guess i cant complain..