I have this exact setup in 3" on my boosted integra with no cat and it's not that quiet.
Please do explain why a round muffler is different from an oval muffler? Especially a magnaflow that is astraigh through design.
I don't think you really know what you're talking about.

 

LOL a straight through muffler is not a restriction

so why even bother running one for looks????

 

ya ha. idk man im running 2.5 and im making more then enough power for the street. i just routed my open dump farther away but it still isnt far enough lol. i hate all that carbon under my hood, plus my car is sucking up all co2 and giving me a nasty headache.

 

my dump and down pipe run under the oil pan and just past it ive never had an issue with fumes what so ever i dont even run a shifter boot i can see straight to the ground even

 

as for the end of my exhaust i have a small resonator, not to quite it down but to change the note of the exhaust where its a little less raspy. the only benifit i have got out of my open dump is the look i get from people when i hit boost is ridiculous like can there jaws drop any farther?

 

mine isnt routed far enough it gets sucked right to the top of the hood and into the vents.

 

dam time to get some pipe and route it somewhere else

 

or make an angle cut so it goes to the ground

 

Uh, maybe to muffle the sound of the exhaust.

 

its hallowed out whats it matter my car was more quiet without the damm exhaust unless your a punk *** street racer that wants it quiet so the cops dont come chase ya down or know who you are so is this the case.

it has been said on here a few times now a turbo's car isnt anywhere near as loud as an n/a is

 

i run mine right out of my drivers side bumper! 1 3/4 inches of bad *** lol.


original poster, if you do go open dump, make sure it goes under your engine and make a tip down. you don't want it anywhere within a few feet of your intake. if the engine sucks in that gas it will rob you of power

 

i know what your saying lol i got a big black spot from where it was pullin the carbon in which is why i re routed the 1-3/4 farther from the intake, but i need to re-route it farther im still drawing it in slightly and all its doing is cutting down my o2 and clogging up my filter.



as for the loud exhaust. my car has 2-1/2 inch straight pipe and its alot more quieter then my bud3ys s2k until i let off then its louder then anything i have owned except my mustang, and well that was a v8 with dual 2-1/2 inch piping with h.

 

Plus thats not what he is asking and yes you can run the dump back into the exhaust with no issues.Will it be qieter most likely if the dump is open under the hood but thats not definite and it also depends on what you consider qiet guys on this site consider a k series with an open downpipe not loud so its really up to you.

 

i guess to answer your question, i see no problems routing the dump tube into your exhaust as long as it's routed properly. every stock turbo car is done like this

 

Are you seriously asking that question? Look at these two mufflers...

http://www.summitracing.com/parts/MPE-14419/

http://www.summitracing.com/parts/MPE-11229/

Even though you asked why a ROUND muffler was different than an OVAL one...I think you meant sound wise. SO lets see...they are both similar but one will be quieter than the other. Hint: Think inside the box.

 

Why do you run a muffler........MUFF....ler?

 

. Inside a muffler, you'll find a deceptively simple set of tubes with some holes in them. They are designed to reflect the sound waves produced by the engine in such a way that they partially cancel themselves out.

 

read this again junnior i dont run a muffler

 

I know the one with a turbo will be the quieter car. I had a 16g and the same exhaust as you (oval magnaflow). It wasn't bad with normal driving it was just the drone that bothered me. I added a big *** resonator and that helped a little bit but it was still a little on the loud side for my taste.

 

Was this directed at me?lol

 

Please explain oh great one. Tell us your theory. Like already mentioned you're not intelligent so stop talking. Here before I get outta hand with showing all of h-t how retarded you are. Which I really would enjoy doing btw. Here is a link directly from magnaflows website in the FAQ sections and just in case you don't wanna click on it I'll post it for you.

Question: What's the sound difference between a round muffler and an oval muffler?

Answer: There is no difference in sound between the round or oval muffler. The only reason they are different shapes is for fitting reasons. One may fit better than the other.

http://www.magnaflow.com/07techtips/faq/question02.asp


STOP THINKING IN THE BOX! It's clearly not working for you.

 

let me simplify, and since you didnt seem to make a comment towards me then nope


Quote:
Originally Posted by sanman000719
LOL a straight through muffler is not a restriction

so why even bother running one for looks????

Why do you run a muffler........MUFF....ler?
__________________
97 Integra LS 5 speed

 

bottom line is a muffler really isnt needed on a turbo car unless your state requires it for emissions

or you have no discipline

or your a stupid *** street racer

 

As said...

to further it..sound waves go inside the muffler casing via the holes. Now what actually muffles the sound is what is inside the casing, which is usually fiberglass. Obviously the more sound deadening material inside the muffler the more it will muffle. What muffler will have more sound deadening material inside? A 3" ID muffler with a round 4" casing? That is giving only 1" of area inside for sound deadening material. Or a oval muffler with 3" ID with a 4"x9" area for sound deadening material? Obviously the oval one.

 

Go for it scooter! Hell we can have a good ol showdown.