got the code from auto zone. Any feedback would be greatly appreciated. have 99' with full exhaust (MIL's), steeda pullies and C&L MAF 80. I got the cose after installing my MAF, C&L sent a richer calibration but after 50 miles, light came right back on. I had this same code after i installed my exhaust but was fixed, C&L was installed about 9 months after. Also, am i hurting the engine driving around under these conditions? Thanks alot....