I have a really rich running car that bogs on acceleration, right now im running open headers, (without tune) and my IAC harness connector is unplugged since my IAC is bad aswell. My passenger pre cat O2 sensor is cracked so I know that might be causing the bogging. There is already a hole drilled through the throttle blade, never was told why, cam seems stock, and my pcv system is (@!!!!$) so I probably have a vacume problem as well. My main concern is the running rich part, and if there is a way to fix without a tune.

 

You need to fix all the broken parts first that you listed, your IAC is going to cause problems, your O2 sensor is probably the main culprit. Also open headers is going to throw off the A/F ratio as well. Please fix all those first and see what happens.

 

How can you tell its running rich? Do you have cats? Definetly fix all the problems first. If you think its running rich because of the smell and you don't have cats thats normal.

 

If the car really is stock, fix the problems and put the exhaust back on it. A tune does not fix problems.