Car Runs Really Rich & Bogs

[Spyder4g64]

I just finished a 6-bolt swap and when i goto boost, the car bogs really bad, and deffinitly doesnt feel like 10 psi. I have some things to finish up with the car, so maybe that's it. Im running an open 02 housing, and the 02 sensor after that isn't getting any exhaust flow/readings. Also im waiting on the ecu pins to wire in the knock sensor.

Would not having the knock sensor and second 02 sensor make the car run like shit?

Also, Im getting really rich readings on the A/F gauge, which is connected the the 1st sensor.

Any help would be greatly apreciated. Thank you.

 

[LA97GST]

I do not think having the back O2 will do that. I think it is a back-up to the front O2.

Do a boost leak test. That is the baseline test. Most common issue to running rich and bogging.

 

[GVR4592]

The ecu pulls timing and add's fuel when there is no knock sensor detected.

 

[LA97GST]

Well there you go. Glad I didn't take a guess on the knock sensor....

 

[Spyder4g64]

Well tomarrow morning ill wire in the knock sensor, and check back. I dont have the money for the downpipe yet, so im going to have to wait on the 02 sensor. Thank you for your help.

 

[GVR4592]

The rear O2 monitors the catalytic converter for proper function, it doesn't affect fueling or timing, but you will get a cel from not having it.

 

[CanadianTSi]

Also do a boost leak test while your at it just to be sure.

 

[Spyder4g64]

Well i had 2 major boost leaks, and i fixed those. Also i wired in the knock sensor and wow, what a difference.

As far as running rich, at WOT on 10 psi, im getting 10.0 a/f on the turbo timer. Now this is not a wideband... Could the stock 02 sensor be inaccurate to the point of 10.0?

The Rear 02 sensor DOES NOT throw a CEL, as it's not on, on my dash.