1998 Pontiac Grand Prix gtp Supercharged..
After high rpm blip of accelerator motor bogs down and dies.. thinkin mass air flow sensor or spark plugs what else could be the issue because mass air flow sensor is expensive and would prefer not to change if not needed I did unplug mass air flow and motor still dies after high rpm not sure what that means online guides aren’t helping much.. please someone help!?!?

Clean the IAC and report back.

Roger that!!

Cleaned iac reinstalled it stuck open and idled at 2krpm after one or two starts it helped ran good so I just got new one now having same issue with brand new iac.

You didn't lose the o-ring did you?

On the old one I might have

Did the new one have an o-ring installed?

And you didn't remove the TPS sensor did you?

Yes it did and no I did not

Try a idle relearn...I think you have to key on for a minute, then key off, then engine start.