I know there are lots of threads about this cel, but I haven't been able to figure out what my next step should be. I've changed my front o2 sensor, spark plugs, and fixed an exhaust leak where the up pipe connects to the exhaust manifold. What should I check next?

I have CAI, vf22, sti pinks, tbe (catless), and ecutek (I've been running with this setup for at least 50k miles with no cels). I'm also holding boost.

Here's a link to a thread in another forum that I've been posting in:
http://wrxmodders.com/forums/viewtopic.php?t=1518

Thanks for any help you can give me...

 

you did the majority of that work for nothing(well, except that exhaust leak). just take off your cold air and clear the code, and it will be fine.

 

But why would the car be fine for 50,000 miles and then suddenly start to have problems with the CAI?