I just bought a 2001 cileca for my son. It looks and drives great. It has 120000miles on it and I was told they put a aftermarket intake on it. The problem is a steady noise and it gets louder as your speed increases. It is pretty loud at 50 +. When you first notce it it sounds like tire humm. Not sure when the last major service was but I bought it from a reputable dealer and a friend of mine works there. I was told the car was checked out and it was in good shape. Looking for any idead