hope you guys & gals are having a good labor day..

Sep 4, 2004, my 2004 vert got check engine light..called my dealer & visited..got 3 codes @ once, which are all related to the mods i have..current mods are black wing, factory maf with metal mesh taken out, kooks header w/ cats & muffler..(i somewhat agree on "we will not fix it due to your aftermarket mods" comments from dealer..)

the codes are p0102, p0420, & p068..they said they are maf sensor, bad cat etc..the bottom line is she is taking too much air, making efficiency bank in pcm malfunction, which i kinda like..we came to the conclusion that i probably need to make the fuel level a little richer, so she can step up with increase in air volume..technician said there seems nothing wrong with internal parts..

questions are..
1) do i need ls1 edit @ this time?
2) predator tune w/ custom tuning on fuel & air mix can help?
3) how can i delete codes, which stays in the pcm memory, permanently?

she is running ok, but definitely lost mid range punch, and seem a little sluggish..thanks a bunch..