That is the one that I put in. Turned the car into brand new again.

Finally figured out what the issue was. The MAF sensor was bad the whole time..Walker brand. During normal acceleration it acted normal but at WOT it went crazy and acted like a rev limiter. Very strange. I replaced it with an OEM style MAF....problem solved. Thank you everyone for the help!

I am almost ready to tear it all back apart...ha ha.

Also, (this is a reach) what kind of spark plugs are you using, and how old are they? It's been mentioned that our cars don't like platinum plugs so well. Just something else to check.

I am using the recommended AC Delco plugs and Belden wires. I dont remember what plugs. I know they are not ...

Did you replace the upper intake manifold or just replace its gaskets? If you didn't replace it, did you verify the EGR tube area didn't burn through to the coolant passages?

And when cleaning the throttle body, did you remove the MAF and IAC or use a MAF safe cleaner?

I replaced the whole ...

I am not getting any codes at all.

I dont really drive the car my girlfriend does and I asked if she had ever had this happen before and she said she has never ran it at wide open throttle like that so she isnt sure. I am assuming the issue could have been there the whole time she has had the car ...

I have an issue where the engine breaks up/stumbles at around 4100rpm. The weird part is between 1-2 shift it only stumbles once then keeps accelerating. When shifting between 2-3 it stumbles repeatedly at 4100rm then will finally power through and keep climbing in RPM until shifting from 3-4. I am ...