hollow out the cat?

[kmdracer]

Yep the loud mouth is cat back. Not sure what year your Z is, but, any decent muffler shop can mod it to fit. I put one on a friends third gen. Wasnt very hard.Here's a link:
http://www.slponline.com/view_product.asp?P=31039A
Hope this helps. I'm putting the GMMG cat back exhaust on my 99Z after Christmas

[94Ztwenny8916]

my Z is a 94, so do they make those loud mouth ones for that year cuz the link u sent me was for 98-02

[94Ztwenny8916]

u know what i think that one will work, my bad it says it will fit 93-02 thanx man i appreciate it

[kmdracer]

No, as far as I know, slp doesnt make them for the 93-97 ( LT1) but, the stock exhausts aren't that much different. Any muffler shop can install it and make any mods needed. BTW, this sounds great through the cat. I don't really like it if you have headers, but some folks do. Here's a site where you can go to hear different types of exhausts:

http://dodds.cc/chad/garage/z28/ls1_sounds/

These are all on LS1's, so your LT1 would sound slightly different, but, like I said, any of these exhausts can be made to fit a LT1.
Hope this helps! BTW, if you really want to not have the cat affect your car, just install a cut out before the cat, uncork it (or get an electric one) before you race, and have fun!
KevinD

[BrakeTorque]

Get some headers and a dual 3" exhaust

[94Ztwenny8916]

really appreciate the info kmdracer, hopefully by after christamas i weel have that done and will let u know whats up, thanx again

[kmdracer]

No prob 94Z, happy I could help. I've spent alot of time figuring out which exhaust to put on the 99Z. It's my daily driver. I really like the GMMG, so I've been saving up for it. I should have mine on after Christmas is done too. On the 91RS, i'm probably gonna go with a custom true dual exhaust using dynomax bulllets. I't going to be a quasi legal street/strip car. Right now, I'm researching swapping in a big block.
Later, KevinD


BTW..here's my cardomain site:

http://members.cardomain.com/kmdracer

[z28 boy]

I just hollowed out the cats on my car cause i had to. The were only at a 45% efficiency. So i bought o2 sims and hollowed out the cats. I love it. I set off all kinds of car alarms here at the apartment complex where i live. did it help i don't know but it sounds killer. oh yeah its an 00 z with 80 series flowmaster.

[LT1MAN]

magnaflow sounds boo boo, its ok for a little bit of noise but the tone is sissy, on lt1 go with 80 series flowmaster, get a high flow cat: heddman-$50.00, get some headers. perfect combo. gutting a cat sounds raggedy and whoever said no backpressure=shitty performance said it right

[korndogg]

all these new people here.....christ i only recognize like 4 people in this thread. lol

[Chevyracincamaro]

face it korndogg, we're just old salts on this forum...

[94Ztwenny8916]

i think i have an 40 series flowmaster on my Z, whats the difference between 40 and 80 series? if i do decide to go with the 80 series should i get the full cat back sytem 3''?

[BiggyD]

Flowmaster sucks ass

[korndogg]

Originally Posted by Chevyracincamaro

face it korndogg, we're just old salts on this forum...

apparently

[LT1MAN]

40 series is less agressive, more for trucks, there is stuff out there that will give you more hp than flow but not for the money, personnally i think it makes everything else sound like shit