I Pulled this with my X2 after i got home from work today...

I know it means that my cat is operating below efficiency. From what i read... it sounds like a bad cat in normal cases.

about 2 months ago i installed LT headers and highflow cats from dynatech.
and obviously i have a custom tune.

Is it likely that this error is caused by the cats being different than stock?

Could it mean that I am running lean? or am i just polluting too much?

How do I know? what should i look for?

Just want to make sure everything is dandy before i decide to clear the code and drive on. Truck doesnt seem to do anything funny tho.

 

Just means that you are polluting more than the tune would like. I am staring at the same code. It pisses me off because I asked troyer to just shut off the rear 02's but he never did.

 

Thanks gotts. Gottsssta check thats all. lol... sorry.

So basically just turn them into sims?

I'll just be annoyed if i have that little amber guy staring at me every 100 miles...

And sorry mother earth... I'll be sure to pick up trash on the ground when i come accross it - until i make it up to you for polluting.

 

hack em off and put hi flows!!!

 

Hope this helps any, on an 07 you dont have rear cats (IIRC), so its either the cats now dont do a good enough job, or you need a tune adjustment: