So i have a 05 TL 5AT and i have a straight pipe from the 3rd cat to the back of the car basically (no resonator, mid and rear mufflers) and of course a few weeks after i straight pipe, i get thrown a P0430 code and its the catalytic converters, im debating just cutting them out since it would probably be cheaper then buying 2 new primary cats but ive looked into the forums and i havent really heard anybody cutting out the primary cats is there something about it im missing? what would be the results performance and noise wise?

 

Look up "Pre-cat deletes"