Thread: 2004 Grand Prix GTP bogging down after header installation.

I had a set of Pacesetter headers installed on my GP. After they were installed when you accelerate hard to activate the super charger the engine boggs down. The boost meter is going all the way but no acceleration. Everything else is stock on the car. Any help would be appreciated.

PS. I have eliminated the cat.

thanks alot
kolman0

Plugged cat comes to mind, not sure if you are running one though.

Possibly a tune. Front o2 sensor not used to what it is seeing.

I would think that running headers on a stock Cat. and exhaust could cause backflow at the Cat. But TBH, I never tried it myself.

Yup I would check the cat and verify your also not having any exhaust leaks.

Did you leave the plugs in when installing the headers?

Probably something unrelated to the headers like a plugged fuel filter.

You didn't buy the my pulley locked up on a belt change. Why are you thinking the fuel filter magically plugged with header install?

These issues are typically right in the area of the install.

No that guy says he has the wrong pulley on his car and he didn't notice or it didn't cause any issues before he changed the belt that is what I find odd.
And I was just thinking outside the box. When my car had those same issues everyone was like check for vacuum leaks, is your bov valve working, what kind of plugs do you have, when all it needed was a fuel filter.