been told my car has Gutted stock cats is this a good idea or do i go down the route of getting proper ones???????????

been told my car has Gutted stock cats is this a good idea or do i go down the route of getting proper ones???????????

I have no idea, but I also wonder if that's a cheap alternative to proper decatting with similar results and if it has different effect on the ol' turbo seals.

Usually seen as the cheap alternative, to do it properly you need to cut the cats open, seen a few people take them off, ram a pipe through and say its decatted which is not really going to give the best results, and also the pipes are designed to give best results as cats. People like PHNW had there pipes developed on a dyno for optimum results so IMO thats the best way to go.

But performance should be improved even if they're just gutted, even if it's not optimum.

 

In my mind, the question of proper de-cat or gutted cats is one of the environment. If they're not fully gutted, just enought to remove back-pressure, then I guess they'll be chucking out various exotic metals and minerals over time.

 

As far as needing cats or not, it depends on whether you believe there's a problem with removing Cat back-pressure with standard turbos. The forum tends to appear split 50:50 on this, so read the various tales (some of happiness, some of woe!) and make up your own mind.

 

If you have the cats replaced, at least go with ones of the high-flow variety. By all accounts much cheaper then replacing with stock.

 

Mark

I don't know......I hate cats,,,,,got a dog myself.... :duffer: