They can be if the muffler shop can do the work. You may see a slight gain by doing it. They do just bolt on. Half the weight, 16 lbs versus 32 lbs on the stock units.SteveYelloZ06 said:Are the pre-cats eliminated with the shortie headers on the 01'?
02 cars have a different main cat. Supposedly its more efficient, which let them nuke the pups.Z06VERT said:I don't understand... the 02's got rid of the pups because they found they didn't really need them to pass emissions, right? So if you remove the pups on an 01 (due to LT header install or whatever), why would you fail an emissions test?
Just curious. Here in Florida we have no emissions tests yet so when I go headers, it will be with long tubes.