[john]

I think you are supposed to read the L-L-S-S-S meaning 23 like the vfaq said. I havent done it though. I have a 1g mas I am not using now and a datalogger but I live in Hopkins. The datalogger would just tell you what the code meant. If you car is at idle, does it surge really bad? That happened when my MAS connector came unconnected once. If so, it may be your MAS.