ilovesvt
Veteran CEG'er
So i think my pre cats are gutted,im assuming because both my o2 codes are on after the cats and my main cat is deleted from previous owner,my question is can i just put a magnaflow high flow real cat with a o2 bung in it where the main cat goes and stick a o2 in the cat where the bung is then weld another bung after that main cat and extend the o2 wires so i have both o2 sensors working or do i seriously have to get new precats ?