Gutting the cat

Whats the best way to go when gutting a catalytic converter? I heard you could also just drill a hole in it. If true where should i drill the holes?

What year is the vehicle?If it is a 1996 and up,do not do it.You will have the check engine light on all the time.

its 2001 what if i drill a hole will it then

just get an o2 sim for the rear sensor. www.thefastman.com he sells plug and play sims.

Dustin, I tell you every day on dodgetalk. You don't need sims.

You don't need sims.

You don't need sims.

Dustin, I tell you every day on dodgetalk. You don't need sims.

You don't need sims.

You don't need sims.

I know you dont NEED them. But if you seriously cant stand the CEL always being on then they would be for you. I myself dont mind the CEL so i just check every once in awhile with the superchips programer to make sure im not throwing any other codes.

You CAN drill a hole in it, but you will need a really long drill bit.

Last guy I knew that took out the element had a long screwdriver that he was hitting with a hammer, knocked it into chunks and made them smaller and smaller until they were small enough to come out the end.

As long as the engine is tuned up really well the CEL probably won't turn on.
If the O2 sensor behind the CAT senses 02 the CEL will come on. If the engine is burning all of the O2 you won't have a problem. One of the functions of the CAT is to complete an un-completed burn by useing up the remainder of the 02. If the engine starts to miss fire or have even minor mixure problems you will get the CEL , whereas if the CAT was there, there would be more tolerance in the system. Gutting the CAT is a Fed offence, if you are looking for less back pressure, try a CATCO low restriction CAT. That way you don't have to worry about the CEL. If you throw a CEL and take it to a shop to have it fixed, they are obligated by law (in most states) to replace the CAT (at your expense).

That's bullshit. I think you guys know only what you've been told and that's it.

I haven't had cats on my '97 since sometime in '03 or something, no lights on the dash. I got my '99 in March of last year and it's been catless since then, no lights on the dash.

Everyone's all scared of check engine lights and bad fuel mileage but if you did it you would understand.

That's bullshit. I think you guys know only what you've been told and that's it.

I haven't had cats on my '97 since sometime in '03 or something, no lights on the dash. I got my '99 in March of last year and it's been catless since then, no lights on the dash.

Everyone's all scared of check engine lights and bad fuel mileage but if you did it you would understand.


I have the light, guess what even with a hi flo cat on my 99 still got the CEL. The 2nd o2 sensor does nothing but monitor the cats effiency. Throwing that code wont hurt anything.

Were there cutouts on that truck too?

Were there cutouts on that truck too?

I reread my post and it kinda seems like im mocking you er something, i didnt mean to sound like that. I was just re-emphasizing your point.

No i didnt have cutouts on my 99. Shorty headers--magnaflow high flo cat--no muffler.