CEL on. Codes:P0410 & P1411

[cbarnes]

My 98 Boxster CEL light came on. I went to AutoZone and they checked the codes for me with there machine for free. 2 codes came up P0410 & P1411. Something about them being secondary air injection fault???

I went home and disconnected the battery for about 20 minutes. Reconnected and no CEL for the whole day of driving. The next day go to drive it and the CEL is back on. I head back to Autozone to have checked. This time it's only code: P0410.

Any suggestions on what could be the cause or if I should actually have a Porsche dealer check it out. Didn't know if it just may go away. I did just install both cats from Fabspeed. But that should not be the issue.

In advice would be greatly appreciated.

Thanks in Advance!