i haven't gotten the turbo installed yet,

 

The pnp harness could still be an issue. Just because its plug n play, doesnt mean its 100% right. I know there were a couple issues with a couple of the wires reversed. We always double check them here before installing.

Otherwise, if all your maps are set to run off the factory settings, you should NOT throw a CEL. I have a feeling either your harness is messed up, or your settings are messed up in the map or the rotarys...

 

^^^^ i agree you shouldn't be having any problems. The CEL might be coming from the change in ECU. After you install the ECU reset the OEM computer and see if you still have the CEL. It happened when i installed my E-manage and now my CEL is from a missing cat, not my computer.

 

I'm having the same problem with my xA. I have the Greddy Ultimate, and the pnp harness from Boomslang. Right now I can't get the two computers to read each other. Either Boomslang sent me the wrong harness or some of the wires on the harness are reversed.