and a crossover won't do anything if i put it infront of the muffler your saying? like 2 foot after the y-pipe

 

Starting with this.
An E-Bay offer of a stainless steel muffler supplied by some one called DTM?
No where on the E-bay ad does it give the manufactured name of the muffler.
Nor does it give a buy it now price.
Think about that for a moment.
At the current listed price of about $38.00 do you really know whether you can actually buy Stainless Steel material.
Do you have any idea what a REAL muffler costs. One that is not offered for cheap on E-Bay.
Do I think this will Blatt?
Absolutly. I think it is a piece of crap foisting itself off as a valuable performance product.
A magnaflow 60 muffler can probably bepurchased for about $100.00 or less. A 40 can be purchased for $85.00 from Summit.
Of course it is not stainless. Stainless costs money. A polished Stainless no name muffler more or less the same size is listed for $139.00
A hell of a deal e-bay is.
Look what I got. Something cheap and WOW I paid more than it was worth. And it sounds like crap.
Well then what did you expect.
I have yet to buy something from e-bay to support my automotive hobby. Not that they are not there but by in large what is generally available I can buy over the counter locally cheaper and of better quality. So on the whole I personally do not even bother looking.
If you are looking at E-Bay to buy something of quality you had better educate yourself into what quality is and what you have to pay to get it.
And a Stainless muffler from DTM motors with free shipping is not even on the same page as quality. Those that do educate them selves often can find something that is a deal. Others? Are not even worth discussing.
As to a cross over. Do you know what one is? Because if you don't you very well could represent a person close to me that bragged about paying $1400.00 for a set of cast iron performance heads that were defective and obviously so that could be purchased over the counter at the time they were purchased for about $400.00 and were claimed to do all kinds of magic to the engine he was building. After being totally frustrated by the engine never performing correctly, one of which was the total lack of knowledge as to how to tune it. I now own that engine.
My cost? $300.00 for the whole thing. It turned out to be a perfectly good engine and with a diss-assembly to clean up errors in assembly and throwing away all the useless stuff and about $400.00 in new and used parts it is now representative of a pretty healthy Corvette motor. Worth about $3000.00 as a long block
So! Cross over's. Something that is installed on DUAL exhaust which is 2 exhaust pipes coming from the engine all the way to the outlet which is generally but not all the time at the back of the car. Each pipe handles 1/2 of the number of cylinders of the engine.
A V-type engine has two banks of 4 (with a V8, 3 if a V6 and 2 if a V4) with a separate exhaust manifold for each bank. On an inline engine it requires a special manifold that will handle some combination of the original number of cylinders as determined by the number of exhaust ports cast into the cylinder head. But one pipe will carry some of the cylinders and the 2nd pipe the rest. That means two exhaust pipes, two Catalytic converters and two mufflers.
They can sound raspy or blatty if you buy cheap enough mufflers AND as current practice is mount them all the way to the back of the car.
Or even on older cars where they were mounted some where between the rear axle and the front of the car.
A cross over is a method of connecting one pipe to the other so they cancel out the resonant raspy sound generated by two separate pipes. The cross over is generally done some where around the middle of the car at the first location that it is convenient based on physical location of the pipe.
On small four cylinder front wheel drive cars which is pretty much what is available since some where around 1980 or so with what is called East/West or cross wise mounted motors the exhaust manifold comes out to ONE (1) pipe which runs down the length of the car to a single catalytic converter and then continues on to the back of the car where the muffler is mounted behind the rear wheel in front of the bumper.
Why there?
Because when the gasoline tank was moved from under the trunk to between the rear seat and the rear axle that opened up that space so the muffler could go there. And also the gas tank now sits where the muffler location used to be.
That eliminates all those nice long pipes that used to be used to tune the sound of the exhaust, single or dual.
And replaced it with the muffler you pointed out on E-Bay.
Don't take me wrong. Cheap mufflers have been around since cars have and that is a long time. And for people on budgets or just being cheap, many of them were sold. I have bought them myself.
But I knew what I was buying and largely it was not important that they were crappy, rusted out quickly and sounded lousy.
I was kool.
So I thought.
And I was probably going to off the car some time soon.
What is a CAT BACK System?
An exhaust system that replaces the single pipe coming from the catalytic converter with 2 pipes and two mufflers.
Why?
It is claimed to improve performance. And the magic words are UP TO. Which means it could do nothing at all or it might do something. But there are two of them it must do something good.
Not really, must is not a requirement.
What it WILL do is remove money from your wallet. Lots of money.
And look kool.
Remember the magic words.
UP TO.
Up to an increase of 20 hp.
or nothing.
That is what up to means. And if the stock system is sized to handle the engine as it is, many of them will handle more engine than it is being used for.
You have to be some what aware of what is going on mechanically in order hazard a guess that your exhaust system will work with your modified engine or not and how much money you are willing to spend.

Arguably money spent on the exhaust system of a totally stock car is the last place to spend it at to get any improvement.

It will depend on the system, the car, what the parts are and what condition they are in as to whether replacing them or not will give any benefit at all and questionably how much if any.

A cat back system is not a cross over. There is still a single pipe running from the engine back through the catalytic converter.

To get good sound these days requires a good quality muffler due to both the design of the muffler and it's location. Right at the back of the car.
And Detroit spends a lot of money on their exhaust systems for the performance cars to get that sound. And so does aftermarket.
And a $39.00 muffler is not going to do that.

 

Ok 1 i am trying to educate myself now.and 2 i just picked off one that i thought looked cool they do have more that have buy it nows,as for if they are name brand or not youre prolyl right i dont think they are, and three i was wondering if like off the header run a y then half way down or the back run a crossover or h pipe,yes i know what they are and im not a mechanic but im not retarded when it comes to wrenching.And yes we spend alot of money here on exhausts after or so years depending on how we drive.Basically what im asking is can i run a y after the cat or header (do away with the cat at a mom ad pops shop)and run duals back and then a h or x and then the mufflers and will that then cut some raspyness out?If you dont think so then design a cool system attach it so i can look and i might put it on my car,I want something that looks cool and sound like something its not,thats it. Thanks for your very detailed response and believe me i do read it all and take much heed to it.

 

you have missed the point of what a cross over pipe is. '
A cross over pipe connects an existing dual pipe exhaust system that has the capability of running 2 exhaust pipes running all the way from the exhaust manifold to the mufflers and then out the back of the car. It connects one pipe to the second one.
It generally serves the purpose of balancing out the pulsations caused by the individual cylinders that exit into their own section of the dual exhaust.
It mellows out the sound by balancing one side against the other. '

The crossover is generally placed about midway from the engine to the rear axle and is in that location only because it is a convenient location to install it.
If you have a single pipe coming from the engine back to a catalytic converter there is no point in trying to figure out how to install a cross over. You can not. You must have two pipes from the engine not one.
As to catalytic converters, you are talking to the wrong person. I see no reason to remove them.
1. they are needed for smog inspection.
2. They help to eliminate the raspy blatty sound.
and 3.
If you are in an environment where they are not needed that is a whole different story.

In the case of this pictorial example the crossover, the place where the two separate exhaust pipes are physically connected together is labeled resonator.

 

Right i understand,the point was just wondering if it would help,Obviously not,and no i dont have to inspect the car either.So what do you suggest,im doing some kind of quad pipe/tips anyways so what do you think would be the best approach to rid of the blattyness

 

Either put the muffler closer up or deal with the blah. maybe go with a twin loop muffler or make a twin loop like design so you have extra piping to tone down the bwahh. However, quad tip/pipe seems stupid and overkill, imo

@ uncljohn, i was looking at the 60, but i got the 40 for like $10 so i was happy hahaha

 

My suggestion is to use something like a Flowmaster 60 muffler and and make sure your catalytic converter is appropriate and then quit worrying about it.
But then again that is what makes the world go around. Spending the kind of money your are proposing on an exotic exhaust system such as what ever a quad sytstem is and I really don't know to me is a waste of money.
When that money can actually be spent on real performance up grades.
However the automotive hobby is exercised in many different ways as can pretty much be seen at any cruise night in anywhere usa. And spending money on exhaust systems has supported the aftermarket exhaust industry for years.
My Saturn is has a complete stock with the exception of the high flow catalytic converter. And it was installed not from preference but from the fact the OEM unit failed and I needed a replacement and it was available
I at this point in time would leave the exhaust completely alone because it does not leak and spend money on redoing the upholstery and then another custom paint job.
As the car is bone stock and runs fine and the A/C works would be satisfied with that until I have other projects finished. And then? Probably would do nothing about the exhaust system at all.

 

I'd probably be happy too!