To Cat. or Not to Cat.

[sdwhite]

I realize this was beat to death a while ago in another message completely but I believe my conditions are different enough to warrant a new message.

 

Would I be ahead, in either performance or fuel efficency, to remove the Catalytic converter on my 3.1L '93 Cutlass Supreme with an otherwise stock exhaust? Based on the conclusion here I may or may not install a bigger diameter exhaust pipe and/or higher flow muffler at some indiscriminant time in the distant future.

 

My 3.1 has the TB coolant bypass hose, modified airbox w/ K&N filter and that's all, folks.

 

And, in an offhand kind of way, what's the best way to make the 3.1 sound killer under WOT, in regards to exhaust?

[digitaloutsider]

And, in an offhand kind of way, what's the best way to make the 3.1 sound killer under WOT, in regards to exhaust?

Remove the muffler . I actually get a lot of comments on my muffler-less Prix.

[DaveFromColorado]

freeing up the exhaust in any way will KILL your fuel economy.

 

--Dave

[digitaloutsider]

Yep. Especially removing the cat. You'll probably be getting some SES lights, too.

[topless94style]

I wouldnt remove the cat, unless you plan doing the whole exhaust. Thats my opinion, I dont see how an SES light could come on without an o2 at or after the cat.

[THe_DeTAiL3R]

Leave it stock until you want to spend more money on it. For now I'd say just buy a new muffler for killer sound.

[Dannymik]

I realize this was beat to death a while ago in another message completely but I believe my conditions are different enough to warrant a new message.

 

Would I be ahead, in either performance or fuel efficency, to remove the Catalytic converter on my 3.1L '93 Cutlass Supreme with an otherwise stock exhaust? Based on the conclusion here I may or may not install a bigger diameter exhaust pipe and/or higher flow muffler at some indiscriminant time in the distant future.

 

My 3.1 has the TB coolant bypass hose, modified airbox w/ K&N filter and that's all, folks.

 

And, in an offhand kind of way, what's the best way to make the 3.1 sound killer under WOT, in regards to exhaust?

 

I feel like a freak asking this, but what does WOT mean? I've seen it a bunch of times and can't figure it out :oops:

[THe_DeTAiL3R]

I feel like a freak asking this, but what does WOT mean? I've seen it a bunch of times and can't figure it out :oops:

 

Wide Open Throttle

[Dannymik]

I feel like a freak asking this, but what does WOT mean? I've seen it a bunch of times and can't figure it out :oops:

 

Wide Open Throttle

 

Thanks Canadian!

[Z34door]

sound killer.....= cut off muffler + straight pipe out back.

 

pipe= less interior resonance.