hey everyone! i installed my ap and loaded up the stage 1 map. and its been good for about a week. but now im throwing codes.

I threw the codes: P0301, P0302, P0300.

I know what the codes are but my questions is why im throwing these? my plugs are basically brand new! (like 3 weeks old)

so my questions is does anyone have any ideas on why i might be throwing these codes? could i have a different problem that is causing me to throw these codes? any help will be greatly appreciated!

Thank-you!

o i forgot. my car is a 2003, bone stock except a magnaflow cat-back. Please give any opinions that may help!

Thank-you.