Something i might try...

[guinnessman]

So my 8 day vacation is coming up, and it's gonna be spent tuning up/fixing up things here and there on the 96 LSC. I already had her up on jack stands, just to check everything out. I'm thinking of cutting the exhaust and removing the 3rd cat-and install turn downs, like how my 95 Thunderbird was set up-sounded mean.

Now i know alot of you guys have experience here, i'm guessing i'm gonna free up roughly 8-10rwhp. Also how loud will this be..? I want it to sound HOLYS*IT LOUD when i get on it haha. I'm also removing the air silencer and i'm gonna cap off the air intake resonator aswell.

I can just throw the exhaust pipes back on next year when it needs to be inspected. Haha, and i'm aware of the Police..i'll keep a close eye on my right foot.

PS i know it's not the smartest thing having exhaust under the car, but i figure as long as i'm not idling for an hour-i'll be fine...hopefully

 

[XLRVIII]

i'm gonna cap off the air intake resonator aswell.
:

might want to actually learn what that thing IS and what it does before you just arbitrarily take it off.

Some folks "think" it's just a silencer when it actually "HAS" a function in relation to an EFI system..and it's not only acoustics that are affected by removal of that/those devices.

 

[XLRVIII]

Hint Heimholtz resonator..

 

[guinnessman]

What does it actually do then..? I removed it on my 93 mark, it was ok. I thought it is to silence the intake even further?? I might have to install an X pipe if i do the removal of 3rd cat...

 

[XLRVIII]

Hint Heimholtz resonator..

Hint Heimholtz resonator..

1

 

[XLRVIII]

There is very little "good information" in regards to these on the internet.
Typical "internet hype" saying it's "ONLY" a muffler..

with that said, I point you to page 78 of Greg Banish's book "engine management advanced tuning".

here is a web version of that page...notice the pictures and the short description.

http://www.cartechbooks.com/vstore/showdetl.cfm?DID=6&Product_ID=3012&CATID=3&chapter=8449

"The hook-shaped appendage on the inlet tube is a Helmholtz resonator, used to cancel out standing wave vibrations that would otherwise corrupt the MAF signal at low speeds as well as make an audible noise."

 

[guinnessman]

Wow, thanks for opening my eyes to that. Looks like i will just remove the silencer in the fender/wheel area.

 

[kustomizingkid]

I hate how that stupid thing looks.... but it does do an important thing.

 

[Aquabrit]

.

 

[guinnessman]

I'm gonna leave my beauty cover on, so you don't even see it. I like that cover anyway, looks good. After all, the mark 8 engine is no "pretty" engine w/o the cover....ugly engine :-(

 

[guinnessman]

Can you guys comment on how the sound will be, just turn downs on each pipe under the car without the 3rd cat? I've read that i'm gonna need an X pipe-is that really needed?

 

[kustomizingkid]

I'd just leave that third cat alone and just take off the mufflers and get new pipes and tips... but that's me.

 

[guinnessman]

How much of a sound differance and power differance would it make though, if i removed the 3rd cat compared to just removing muffs?

My 93 base just had removed muffs and removed resonator, it sounded deep and mellow-i'd rather a more "in your face" sound, if you get me lol.

 

[kustomizingkid]

I've never driven one with the resonator removed, just the mufflers and I love how they sound with just the mufflers chopped.