Wierd codes?

[Reb.B]

On an 06 i have, i put a quad low power box (65 HP) and after two weeks of driving i get two codes, a P 0148, fuel delivery error, I've done a search on that and its either high pressure or low pressure is not right, but I also got P0513 code. Its supposed to be "incorrect immobilizer key"? What is that, any help would be nice, ... maybe my "snap on" solice 5. 2 or the triple dog code reader may have upset the 06 since neither one is designed to work on 06. Thanks