I've got an 01 with a knock and excessive black smoke under throttle. Hoping it's the injectors and not a rod, wrist pin, etc. I've tried everything listed in all the Torque Pro threads i could find & still can't get balance rates to read correctly. Have the ELM custom configuration string set to atz. Have tried changing the Preferred OBDII protocol to J1850 VPW 10.4k baud. Have tried checking the "Use Alternate OBDII Header" setting. Balance rates still read anywhere from -423 to 0. Also tried with a mechanic buddy's Snap On Modis scanner & all balance rates read 0 on it. No codes present. Can the injectors be so bad that balance rates won't read?