https://www.nopistons.com/forums/pub...1047683561.gif what all do you take out of the catalitic converter when boreing it just curious is thier a web page or something that shows you





also when you bore the cata can you do that on any car (89 probe)?



oh btw my 7 will still not work and im going to cry....

The easiest way to gut a cat is to take a screw driver and smash all the, what looks like mosquito screen, stuff. It's actually all one solid piece, I think. Just hollow out the inside of the cat. Take out everything that is not steel.

so what exactly does it do for the exhaust and do you gain any lost hp becuase of the back pressure? or is just louder?

Oh, and yes, you can bore out the cats on any car. Some cats have beads in the cat but that is old school. I wouldn't expect too much more performance out of a probe, though, with gutted cats.

so it does make a slight difference in the performance then was just curious and the sound i take it it is alot louder?

Ah... It reduces back pressure. You can see when you look through a cat how much it restricts the flow. It helps more on a turbo thouhg b/c the reduced back pressure increases boost from the turbo. Not so much of a noticable gain on N/A engines.

****! I gotta read the questions more carefully. Yes, it does make the exhaust louder. Man...