it will throw a code (ses light) will be on.
which can be fixed by using a 02 simulator. check out www.thunderracing.com for that.
so you know you won't get much if any more power from doing it. and if you have smog checks it will fail and can be finned up to 25k for messin with the cat.
Well... I guess you obviously want someone to post, so I guess I'd say it is good because you get better flow, but it is illegal. I would say either do it yourself, or good luck finding a shop to do it (illegal to even change the cat before 5 yrs or 50,000 miles unless it is defective). Maybe my post will bump it so someone who actually knows something will post . BTW, I ordered a high flow cat, but I haven't gotten it yet, so I can't tell you whether it is any better. I have heard getting rid of the cat is good, but I don't have any experience w/ it.
As far as cutting your cat is concerened......DON'T!! A: It will not be that much louder, B: 4.3's like a high velocity exhuast flow. Yes you will increase the flow but at the expense of velocity which aids in cylinder scavenging. This will kill low end torque to the point you will feel. C: It's illegal. At least in New York. I dont know about Ark but if you have annual or Biannual emission checks you can be fined if the truck fails the emission test. Do yourself a favor and spend the money on a high flow cat if your that hell bent on getting every ounce out of that motor. For 85$ why screw with it. If its worth doing its worth doing right. Your truck will run better and the squirrles will thank you for it. Just some advice. P.S Dyno numbers prove the truck will make more power with a hi flow cat than a hollowed out one. Hope this helps:nono:
I just ordered one from http://store.yahoo.com/exhaustpros/carunconnoai.html ... I should be getting it soon, but I haven't yet so I can't tell you any differences yet. I don't know if it is the cheapest place, but it was the cheapest for both the muffler and cat that I needed, so I went w/ that place.