Exhaust Questions

[Gr1m]

I've posted this multiple times in threads started by people looking to quiet down their exhaust. Look into the Flowmaster Hushpower Shorty II.....

I'm sorry, I was just looking for some quick answers, which I got (yours too, thanks).

The thing is, I can't replace the cat on my car, I need to pass emissions still because I live in phx Unless I misunderstood (which I'm prone to doing, even after re-reading and researching)

[Gr1m]

Possible Set-Up

Oh, right, I forgot. Here's what I think will be alright (after reviewing all of the suggestions)

2.25 piping (Kteller)
Vibrant flat black muffler
24" resonator (cherry bomb or thrush brand, I guess (size can vary))

So two things: Do I keep the high-flow cat I have, or revert to the stock one?
And my uncle said not to buy all of the pre-bent pipes, that a muffler shop will do it for way cheaper... is that true?

Thanks for the help, I can't get it anywhere else. My whole family is into old-school Impalas, I'm kindof the black sheep.

[lordoja]

cherry bomb or thrush both make pretty good glasspacks/resonators....but honestly they are all pretty much the same and whatever your local exhaust shop has will be just as good

this is true, i have a glasspack on my CB with 2.25 piping theres a video on YT of my friend trying to keep up while recording on youtube lol

take in account that the longer the muffler is on the car the louder it gets . my magna flow has been on my car for years now and damn its loud with 2.25 pipes from the collector back. i got to do something soon . maybe the apex WS2 is soon to come.

not really louder, more deeper.

OP what you have sounds pretty good, you can get a cherry bomb glasspack on amazon for like $50 now days, they're all the same, as long as they are straight-through, perforated with fiberglass packing (hence the name)

and yes a shop will make cheap bends, just do yourself a favor, and make sure they are not crimp bends as they will hinder the flow, get mandrel type bends, if they charge you too much just get pre-made mandrel bent piping, as far as the cat goes... they're all the same just try to get a metal matrix one, i have a Magnaflow 3" high flow cat in mine just make sure that when its all mounted that the serial on the cat is facing downwards in case the 5-0 gets cute and checks

[mozzandherb]

Alright, so as far as glasspacks/resonators go, what's a good brand?

And does anybody have the Vibrant flat black muffler? Because instead of replacing the whole system, i'd very much rather get a different muffler and the dual resonator setup dailydriVen suggested....

I do have the Vibrant muffler, that's one reason why I suggested it. It's stealthy and it's a straight through design. You might want to add a resonator to baffle it a little, but you won't be disappointed with that muffler.

[SaiSofine]

Alright, so as far as glasspacks/resonators go, what's a good brand?

And does anybody have the Vibrant flat black muffler? Because instead of replacing the whole system, i'd very much rather get a different muffler and the dual resonator setup dailydriVen suggested....

For a resonator i would recomment a Aero ar25. I have 2 on my car and its sounds pretty good.

[uslspct]

Did everyone know Kteller lists their piping sizes as OD" NOT ID". And other companies do as well. But my resonator and muffler I just got are measured by ID".
Can anyone comfirm the size of Bisi's collector?

How the hell is everything supposed to be smooth flowing and line up and install good if it's not all the same size?

I just bought Kteller's 2.5", a Hedman 24" glasspack, and a Dynomax VT muffler, Bisi header is on it's way. And a new 300 cell cat too. I'll be posting my thoughts when it's all done.

I had a Magnaflow catback on for a while before something else took a shit, and it was good and sounded ok and not too loud. But what header and type of cat, if at all, you use, will make a big difference.