No muffler video clip

[The Sopranos]

I took my axleback off so i could clean the ports and the muffler, and i figured id hear the car while it was off, and omg, its loud as fuck. I got the cops called on me, twice, in two hours. lmfao.

Here's the link:

YouTube - ‪No muffler on an 08 Eclipse GS‬‏

[th3 salvy_516]

that is loud lol did your neighbors call the cops on you?

[dsm2mivec]

Ha I like the way it sounds except up in higher rpms it sounds like a hoooonduuuuhhh! Haha but it has a pretty deep grown down low!

[The Sopranos]

haha yeah the neighbor called the cops.
and i like the way it sounds too haha, i wanna find a middle ground haha. I want the "throatiness" that that has.

[Freeker]

get eletric cut out... done...

http://www.youtube.com/watch?v=hqfPU7pgINM

[07-eclipse-newbie]

you shoulda drove it around the block like that. lol

does ne one have a vid of what an eclipse with headers and a muffler sounds like? aftermarket muffler....cuz i dont have a full exhaust, just a Megan N1 muffler. i wonder what it would sound like...

[The Sopranos]

Haha i drove around the block once, and a different neighbor called the cops haha

and Freeker it sounds sick, how much was it ?

[Freeker]

$200... completely worth it imo.... windows are up and radio is on... loud as fuck... not annoying loud... sounds amazing at idle... a nice rumble and a growl at cruise

http://www.youtube.com/watch?v=KWw_2tLHps4

[The Sopranos]

damn, ill look into tht

[Skittle]

with the cut out open will you get the cops called on ya/be easier to get pulled over...? and what exactly is a electric cut out can you do it yourself..?

[akley88]

heres a video with rre header and aero turbine
VID00004-20110430-1328.mp4 video by oakleyfreak88 - Photobucket
heres the car on the dyno
MVI_0257.mp4 video by oakleyfreak88 - Photobucket
the car with rre header and magnaflow muffler
photos253.mp4 video by oakleyfreak88 - Photobucket
and this is with the aero muffler before the rre header
http://s742.photobucket.com/albums/x...t=MVI_0230.mp4

[Freeker]

Originally Posted by Skittle

with the cut out open will you get the cops called on ya/be easier to get pulled over...? and what exactly is a electric cut out can you do it yourself..?

a electric cut out opens and closes a valve that allows sound from your exhaust to be dumped just after the headers...

cops... meh flip a switch and 5 sec later im running through my magnaflow cat back... so far no issues... plus as long as your not at high revs the car isn't that loud... cruise with windows down and radio on lvl 20 i was able to have a conversation with a friend without yelling

[The Sopranos]

Originally Posted by akley88

heres a video with rre header and aero turbine
VID00004-20110430-1328.mp4 video by oakleyfreak88 - Photobucket
heres the car on the dyno
MVI_0257.mp4 video by oakleyfreak88 - Photobucket
the car with rre header and magnaflow muffler
photos253.mp4 video by oakleyfreak88 - Photobucket
and this is with the aero muffler before the rre header
MVI_0230.mp4 video by oakleyfreak88 - Photobucket

Your RRE header and magnaflow muffler sounds dif than mine, is that the axleback magnaflow ? or just a universal muffler ?

[akley88]

Originally Posted by The Sopranos

Your RRE header and magnaflow muffler sounds dif than mine, is that the axleback magnaflow ? or just a universal muffler ?

its a custom 2.5" pipe from the header back with no 3rd cat or resonator

[07-eclipse-newbie]

how much was that magnaflow? it sounds dirty

[The Sopranos]

Oh aright, thought so, thanks ! it sounds sick btw

[akley88]

Originally Posted by 07-eclipse-newbie

how much was that magnaflow? it sounds dirty

the setup with the muffler and piping was 140 or 150.

[07-eclipse-newbie]

thats not bad at all...is that normaly how much an exhaust system is?

[akley88]

Originally Posted by 07-eclipse-newbie

thats not bad at all...is that normaly how much an exhaust system is?

rre's axle back is 210. its cheaper to go through local shops usually, atleast the one near me is.

[07-eclipse-newbie]

i have an axle back right now...i was talking about a full system..is it even worth it to get a cat back? is there any difference? my system now has a Megan N1 axle back, with a resignator delete.

[akley88]

i think its worth it, mine is a little more then a catback, i can tell you that with the rre header no resonator, no 3rd cat and a straight through aero turbine muffler the exhaust was over 140dB.

[akley88]

you do want some back pressure in the exhaust cause you will lose power if its to free flowing,the car now has a resonator back on it and the magnaflow muffler.

[Freeker]

Originally Posted by akley88

you do want some back pressure in the exhaust cause you will lose power if its to free flowing,the car now has a resonator back on it and the magnaflow muffler.

silly ppl and your myth about back pressure...

back pressure... who needs it?

Some say that "an engine needs backpressure to work correctly." Is this true?

No. It would be more correct to say, "a perfectly stock engine that cannot adjust its fuel delivery needs backpressure to work correctly." This idea is a myth. As with all myths, however, there is a hint of fact with this one. Particularly, some people equate backpressure with torque, and others fear that too little backpressure will lead to valve burning.

The first reason why people say "backpressure is good" is because they believe that increased backpressure by itself will increase torque, particularly with a stock exhaust manifold. Granted, some stock manifolds act somewhat like performance headers at low RPM, but these manifolds will exhibit poor performance at higher RPM. This, however does not automatically lead to the conclusion that backpressure produces more torque. The increase in torque is not due to backpressure, but to the effects of changes in fuel/air mixture, which will be described in more detail below.

The other reason why people say "backpressure is good" is because they hear that cars (or motorcycles) that have had performance exhaust work done to them would then go on to burn exhaust valves. Now, it is true that such valve burning has occurred as a result of the exhaust mods, but it isn't due merely to a lack of backpressure.

The internal combustion engine is a complex, dynamic collection of different systems working together to convert the stored power in gasoline into mechanical energy to push a car down the road. Anytime one of these systems are modified, that mod will also indirectly affect the other systems, as well.

Now, valve burning occurs as a result of a very lean-burning engine. In order to achieve a theoretical optimal combustion, an engine needs 14.7 parts of oxygen by mass to 1 part of gasoline (again, by mass). This is referred to as a stochiometric (chemically correct) mixture, and is commonly referred to as a 14.7:1 mix. If an engine burns with less oxygen present (13:1, 12:1, etc...), it is said to run rich. Conversely, if the engine runs with more oxygen present (16:1, 17:1, etc...), it is said to run lean. Today's engines are designed to run at 14.7:1 for normally cruising, with rich mixtures on acceleration or warm-up, and lean mixtures while decelerating.

Getting back to the discussion, the reason that exhaust valves burn is because the engine is burning lean. Normal engines will tolerate lean burning for a little bit, but not for sustained periods of time. The reason why the engine is burning lean to begin with is that the reduction in backpressure is causing more air to be drawn into the combustion chamber than before. Earlier cars (and motorcycles) with carburetion often could not adjust because of the way that backpressure caused air to flow backwards through the carburetor after the air already got loaded down with fuel, and caused the air to receive a second load of fuel. While a bad design, it was nonetheless used in a lot of vehicles. Once these vehicles received performance mods that reduced backpressure, they no longer had that double-loading effect, and then tended to burn valves because of the resulting over-lean condition. This, incidentally, also provides a basis for the "torque increase" seen if backpressure is maintained. As the fuel/air mixture becomes leaner, the resultant combustion will produce progressively less and less of the force needed to produce torque.

Modern BMWs don't have to worry about the effects described above, because the DME (car's computer) that controls the engine will detect that the engine is burning leaner than before, and will adjust fuel injection to compensate. So, in effect, reducing backpressure really does two good things: The engine can use work otherwise spent pushing exhaust gas out the tailpipe to propel the car forward, and the engine breathes better. Of course, the DME's ability to adjust fuel injection is limited by the physical parameters of the injection system (such as injector maximum flow rate and fuel system pressure), but with exhaust backpressure reduction, these limits won't be reached.

[akley88]

your right i wasnt thinking.