Hi all, it's been awhile since my last post as the rx8 had a remanufactured put in over Christmas (made it to 135k on original 6 port) and had been sitting for 6 months before that. I have been driving it for a month/1k miles now and have had no issues... Until last night. I started it and a cel was thrown and the car went into limp mode. I have a scan tool that cleared an o2 sensor code but now every time I reset the PCM a cel comes up with no code listed on the scanner. I adjusted the sensor as suggested on the OMP with no luck. I cleaned the MAF up as there is lots of salt in Chicagoland as well. No luck there either. All plugs and coils were replaced when the motor was swapped. I have a high flow cat that is only 1 yr old as well but a header did get installed with the motor. I searched the forums but I'm struck. Any suggestions would be much appreciated before I "limp" it over to the dealer. So a cel with no code and limp mode seems to be a bad omp?