Catless downpipe + No Exhaust = suckfest

heydockyle · Post by **heydockyle** » Tue May 25, 2010 2:04 am

So I put a pt cruiser borla header and a 2gn catless downpipe on my car. The car before had stock beginning, and then a side exit cat back with one resonator.

Well let me just say the car is the most annoying thing in the world, and it hurts my ears to drive. I need to have a high flow cat welded in or something. Really is so raspy and loud it's pathetic. I really don't even want to drive the fucking thing. It has a slight exhaust leak, and the side exit doesn't come all the way out the side, it blows onto the side of the car by the pinch weld. I'm hoping getting the exhaust welded where it leaks, and putting a tip on the end will help to fix some of the shitty ass sound.

4 hours of cutting and piecing together exhaust for it to sound like shit. Pisses me off.

FAC3L3SS · Post by **FAC3L3SS** » Tue May 25, 2010 2:42 am

Maybe you could drive the orange car.

Post by **occasional demons** » Tue May 25, 2010 8:02 am

Getting it out from under the body will help some, but it is still going to sound like ass. Being that short, even with a cat, it will be loud. A little less maybe, but that is the one negative with 16 valve engines (8 exhaust valves).

None of my 8 valve 4 bangers sounded as horrible as the neon engine with out a muffler.

lilnicko11 · Post by **lilnicko11** » Tue May 25, 2010 9:02 am

how bout a vid of it for our viewing pleasure??

Post by **occasional demons** » Tue May 25, 2010 9:35 am

Just envision Yoko Ono caterwauling.

heydockyle · Post by **heydockyle** » Tue May 25, 2010 10:20 am

FAC3L3SS wrote:Maybe you could drive the orange car.

I did drive the orange car. Past 3 days actually. I drive the orange car every day it's nice out.

I'll get a vid.

Forest Green 2k · Post by **Forest Green 2k** » Tue May 25, 2010 10:45 am

I thought it was common knowledge that Neons sound like death with header back exhausts, lol. (Unless it's a cammed 1st gen DOHC)

Just ask me.

heydockyle · Post by **heydockyle** » Tue May 25, 2010 10:49 am

Yea, but I was hoping the resonator would do something to kill the rasp. I need a cat or an exhaust. The header setup also gets really really hot. Like as soon as you start the car.. That normal? Never had a header...

Forest Green 2k · Post by **Forest Green 2k** » Tue May 25, 2010 11:21 am

Yeah, sounds like mine lol. I read it's harder to kill raspiness due to a header. Might have to ditch the side exit and get a quality muffler. And my header gets very hot quick too, soon as I get the extra cash I'm gonna wrap that and my testpipe.

heydockyle · Post by **heydockyle** » Tue May 25, 2010 11:28 am

Yea I'd like to. But then I'd have to have piping run to the back.

Such a dam money pit.

Post by **occasional demons** » Tue May 25, 2010 12:23 pm

OK, I retract the Yoko Ono thing. That sounds much better than her.

Pretty sweet, it reverberates the speakers on my work PC!

Edit: And yes, the heat is normal. Unlike a cast manifold, the thin metal doesn't hold in the heat as well. Internal ceramic coating is the best solution. But not the cheapest.

Forest Green 2k · Post by **Forest Green 2k** » Tue May 25, 2010 12:54 pm

heydockyle wrote:Yea I'd like to. But then I'd have to have piping run to the back.

Such a dam money pit.

www.rockauto.com = Great parts site

I got a complete mid-section for my 2gn for under $30 but didn't end up using it.

heydockyle · Post by **heydockyle** » Tue May 25, 2010 2:54 pm

Well it pulls better mid to top but feels like I lost a little bottom. Doesn't spin in first just hitting the gas now. That or I just can't hear it cuz the exhaust. I'm guessing some of it is cuz of the leaks

Bought a little turndown and a new gasket for the downpipe because it was leaking.

Soon I'm gonna buy some heat wrap and wrap it. Using Modern's 2 in wide wrap, how much will just one do? It doesn't say how much you get with it?

ZeroChad · Post by **ZeroChad** » Tue May 25, 2010 3:10 pm

Welding in a high flow cat drastically reduces the raspiness. I went with the magnaflow 2.25".

heydockyle · Post by **heydockyle** » Tue May 25, 2010 3:22 pm

Where'd you buy it at? Modern only sells Vibrant cats.

I was looking at this. Moroso Spiral Flow Muffler

Forest Green 2k · Post by **Forest Green 2k** » Tue May 25, 2010 3:57 pm

That Moroso one is pretty cheap and looks decent.

heydockyle wrote:Well it pulls better mid to top but feels like I lost a little bottom. Doesn't spin in first just hitting the gas now. That or I just can't hear it cuz the exhaust. I'm guessing some of it is cuz of the leaks

I def lost a lil low end power but my ATX can still spin both tires (sometimes, lol).

heydockyle wrote:how much will just one do? It doesn't say how much you get with it?

I need to know too.

ZeroChad · Post by **ZeroChad** » Tue May 25, 2010 4:42 pm

SummitRacing
http://www.summitracing.com/parts/MPE-54955/

Modern is cool and all, but they don't always have the best deals/stock for more universal items.

heydockyle · Post by **heydockyle** » Tue May 25, 2010 6:35 pm

So the tip did me no good. Actually made the sound more annoying. My dad has a flowmaster exhaust off of a 2.2 turbo shadow and I'm going to take it to a local exhaust shop and see what it will cost to run piping from the downpipe back to the exhaust that will go in the stock location.

neonslg09 · Post by **neonslg09** » Tue May 25, 2010 7:21 pm

heydockyle wrote: Such a dam money pit.

Ya know....

heydockyle · Post by **heydockyle** » Tue May 25, 2010 9:01 pm

Lol I know I know. Atleast it runs good now. Pulls pretty hard up top with the new header.

lilnicko11 · Post by **lilnicko11** » Wed May 26, 2010 8:00 am

after the vid, your def right. i do not like it.

heydockyle · Post by **heydockyle** » Wed May 26, 2010 10:14 am

At the beginning of the video it's like oh this aint too bad. But then it's a different story.

EDIT:

So exhaust shop wanted $200 just to run piping back to the exhaust that I supplied, and I would have to wait a day. So i'm now looking into getting a whole exhaust system.

I may purchase dynomax piping off of MP and run it back into the muffler I have and have my dad weld hangers on the muffler. That would be like $140. And I would have the piece of mind that I did it, and people aren't revving the shit out of my car when I would leave it there.

Forest Green 2k · Post by **Forest Green 2k** » Wed May 26, 2010 6:12 pm

Check out www.rockauto.com for a midsection!

heydockyle · Post by **heydockyle** » Wed May 26, 2010 7:37 pm

Yea but I'm looking to go 2.5 instead of stock 2.25.

INVUJerry · Post by **INVUJerry** » Wed May 26, 2010 8:26 pm

Get a truebendz piping kit or an ebay fart can system, and cut the fart can off.

Forest Green 2k · Post by **Forest Green 2k** » Wed May 26, 2010 9:07 pm

heydockyle wrote:Yea but I'm looking to go 2.5 instead of stock 2.25.

I dunno if that would do any good for an n/a Neon, not to mention you would save a lot of money sticking with the stock size.

heydockyle · Post by **heydockyle** » Wed May 26, 2010 9:26 pm

2.5 is better for an n/a. I wouldn't go bigger then 2.5.

I found a cat off a stratus for free, so I'm going to replace my downpipe with this cat for now until later.

I need money to buy tires for my quad.

Forest Green 2k · Post by **Forest Green 2k** » Thu May 27, 2010 9:25 am

heydockyle wrote:2.5 is better for an n/a.

I dunno, that's enough for a turbo.

heydockyle · Post by **heydockyle** » Thu May 27, 2010 10:07 am

Forest Green 2k wrote:
heydockyle wrote:2.5 is better for an n/a.
I dunno, that's enough for a turbo.

According to some posts on neons.org 3.0 isn't overkill for a mild n/a build. They said it was around 5hp increase of 2.5 in piping.

But I have no use for 3.0.

Post by **occasional demons** » Thu May 27, 2010 12:23 pm

heydockyle wrote:
Forest Green 2k wrote:
heydockyle wrote:2.5 is better for an n/a.
I dunno, that's enough for a turbo.
According to some posts on neons.org 3.0 isn't overkill for a mild n/a build. They said it was around 5hp increase of 2.5 in piping.

But I have no use for 3.0.

Meh, without dyno results to backup larger than 2.5 piping on a N/A build, they can post all day. A 3" daimeter tube 10' long, is a lot of air to push out of the way.

A 2.5" cut out at the down pipe would prolly make more power than 2.5" or 3" pipe out the back. Like I've said before, you can start out large, then gradually neck down to the end. The gases cool as they travel, slowing down. If the pipe gets smaller, it helps keep them flowing, instead of having to be pushed out the pipe. It's all about velocity, not size.

2GN.ORG

Catless downpipe + No Exhaust = suckfest

Catless downpipe + No Exhaust = suckfest

Re: Catless downpipe + No Exhaust = suckfest