Mini Cat Foolers

Hi Guys,

After installing catless downpipes on my N54 335i, i have been getting the following codes ever since
2c77 Lambda probe behind catalytic converter, signal
2c78 Lambda probe behind catalytic converter 2, signal

Im not getting any CEL or anything catastrophic wrong with the car, but im concerned these codes could be interfering with the cars AFR and fuel consumption.

Has anyone used mini cat foolers (see image) to fix this and if so do they actually work. Also, apart from this and using the JB4 autoclear function, what else can i try to clear these codes up permanently.?

Thanks
D

Yip, i have downpipe on my N54 with no software and they installed Catfoolers on mine. No codes NADA

---

Cant clear them codes permanently unless you have the catfoolers or JB4

First check if the O2 sensors were installed correctly when DPs were installed.

1. Jb autocode clear
2. The jb backend flash deletes the emision codes
3. Catfoolers sometimes works but is not required if you have the above.

Thanks guys :coolShake:

Moved to X35 Fanatics forum :coolShake:

Both these codes are relating to the signal received from the O2 sensors, verify correct fitment at the plugs and the correct sensor connected to the correct plug.

2c77 Lambda probe behind catalytic converter, signal
2c78 Lambda probe behind catalytic converter 2, signal

Kish2604@TheFanatics said:

Both these codes are relating to the signal received from the O2 sensors, verify correct fitment at the plugs and the correct sensor connected to the correct plug.

2c77 Lambda probe behind catalytic converter, signal
2c78 Lambda probe behind catalytic converter 2, signal

Click to expand...

Thanks Bud. Will Check them out. Just to confirm, Bank1- Black Wires and Bank 2-Grey Wires right.?

Kind Regards
Duane

Kish2604@TheFanatics said:

http://www.bmwfanatics.co.za/showthread.php?tid=61717

Click to expand...

:coolShake::coolShake:

Thanks a mill.!