Originally Posted by 1st

So just as an fyi for myself. If I run a Stillen cbe, keep the cats and install a Stillen G3 cai with no tune. Will I throw a cell? I know I shouldn’t be due to having the cats and have had other cars with this type of set up(cai/cbe). But I’m reading a lot on the Z getting cells after G3's with only having cbe/cai? and per Stillens web sight the discription says it might throw one. Any insight would help.