2x Mufflers?

[Joshmoshx]

Sorry i'm rather new, I recently Had a 98 grand prix gt with 200k miles an traded it for a 420a 2g eclipse..
This eclipse has a magnaflow resinator an no mufflers. Near the back it has a y pipe but as I said no mufflers..
Is it possible to put 2 mufflers on each side? or should I just go back to the basic 1 Muffler?

 

[architechnik]

A single muffler would be appropriate.

Is the Y pipe far enough forward that it routes the two ends to opposite sides or do they both exit at one point? There are a number of single in, dual out mufflers out there that give great flow and sound.

 

[spyderdrifter]

Just keep back pressure in mind.

 

[T is for TURBO]

It's easiest just to do one out one side.

 

[spyderdrifter]

It's easiest just to do one out one side.

Ha ha... I like your profile name

 

[Joshmoshx]

A single muffler would be appropriate.

Is the Y pipe far enough forward that it routes the two ends to opposite sides or do they both exit at one point? There are a number of single in, dual out mufflers out there that give great flow and sound.

it does seem more appropriate but if i did that id have a cut out on my bumper from the duals .

this is how it looks now.. new rims for $125

 

[kqodprez]

I'd keep it a single muffler...the N/A motor needs the back pressure to operate properly.

 

[tkelly27]

I'd keep it a single muffler...the N/A motor needs the back pressure to operate properly.

Nope, no engine needs back pressure to run properly. You can do further reading on why this is a commonly held belief but untrue. It is also untrue that back pressure helps increase torque.

I like the dual tips. As suggested, can you replace the Y section with a single in dual out muffler?

 

[T is for TURBO]

Nope, no engine needs back pressure to run properly. You can do further reading on why this is a commonly held belief but untrue. It is also untrue that back pressure helps increase torque.

The myth comes from the days of carbs. When you would open up the exhuast with out re jetting the carb, you could burn up valves do to more airflow causing a lean condition

However, in the day and age of FI and O2 sensors, back pressure of any kind is bad. However, that doesn't mean and open exhaust is good either. It all comes down to the manifolds ability to scavenge.

 

[drakenj]

That looks sick keep it as is
That's what I'm planning to do after I drop my Turbo build motor in 2 smaller pipes instead of 3" single. Hoping to keep my exhaust quiet.

 

[DSM_RENEGADE]

Single to me looks always looked the best instead of duals on the eclipse to me

 

[kqodprez]

After doing a little research it's not the backpressure that you need. It's the velocity of the exhuast gas that you want to keep constant. If you open it up to much the velocity will be greater then your motor can create meaning that during the exhaust cycle it there won't be enough pressure to effectively evacuate exhaust fumes.

 

[T is for TURBO]

After doing a little research it's not the backpressure that you need. It's the velocity of the exhuast gas that you want to keep constant. If you open it up to much the velocity will be greater then your motor can create meaning that during the exhaust cycle it there won't be enough pressure to effectively evacuate exhaust fumes.

None of that has anything to do with the exhaust AFTER the manifold. Exhaust efficiency is dependent on the manifolds ability to scavenge. A well designed manifold will have the exhaust pulses create a negative pressure to help suck out the subsequent pulses (scavenging), after that, its all about getting it out.

Look at all the fast drag cars on this site. They dump right out the side of the car. No mufflers.