did your car dip in rpm's at idle--Like when I pull up to a light I have to rev before letting the clutch out because the rpm's fall and then pick back up as normal (it seems like it almost wants to stall)--the exhaust sometimes sounds like crap now like it is all plugged up even after the car is fully warmed. And the sputter is only half of the time and usually disappears after about 2000 rpm. The car alot of times surges around that point. The high end seems to be no different and for the most part unaffected though the car may be down on power and I cannot tell it. Thanks for your help guapo!