Trouble code help!!!!

[ryws6ick]

I am getting a air injector or something code and a knock sensor code I think, after installing the preditor on my 02 trans am. Just wanted some input what exactly it is with these and how to fix these codes. Also will these codes on will it hurt the motor? Thanks

[ryws6ick]

Also just an update, as of right now their is no pinging noise while driving or WOT so far. But I did the tune today and the lights were off after I put it on the car, but after driving it alittle the light popped on. Now I did put $10 worth of 93 octane exxon gas in last night but I wasnt completely out of 89 octane that I was running before the tune in there maybe a gallon or less just depends on how much is in the tank when the low gas light comes on. could that be it on the knock sensor one? and I dont know about the air injection code, ANY help would be GREATLY appreciated thanks