Brockvon2002

I’m trying find out how to tune out the cat codes and secondary air system codes basically all emission codes for reference I have a 2002 trans am with a Holley efi throttle body and volant cold air intake with no cats I want to know how to tune out these codes and possibly learn out to gain a little power from it if any. I’m a beginner so kinda sort on money rn any help would be nice

fst100

iTrader: (5)

you'll need a tuner hardware/software of some sort and laptop or handheld tuner. handheld tuners such as diablosport or software/hardware tuners such as hptuners or efi-live.

06MonteSS

Diablosport tools do NOT allow the disabling or deletion of ANY emissions-related items or trouble codes, as it is against the E-P-A regulations/law...

LS_caddy

Use TunerPro/UniversalPatcher and PCMHammer. Then you can just delete all the codes regarding emissions. Just remove all the emissions related codes that pop up

Brockvon2002

could you tell me which ones would be better to two now or easier or if there’s a how to or anything?

pdxmotorhead

So you might want to spend a serious amount of time studying how the software works before you touch anything..
one of the fairly common questions on here is "I changed something and now my car wont start... "

I have a Holley terminator so I don't have the full how to for ya,, but once I sat down with the manuals and really read them workign with the tuning software got so much easier as well as giving me more troubleshooting knowledge..

mrvedit

Another possibility might be to send your PCM to a tuner willing to disable those codes for you. You might find it even cheaper to buy a rebuilt PCM from a vendor on EBAY who will disable those codes.
I would suggest not changing the tune, e.g. "leaning it out a bit", until/unless you know a lot about tuning or you will have a poor running engine, no start, or even holes in the pistons.