Besides a different sound, any other advantages to an exhaust kit?

[jarzo]

Hi,

Just curious....

Besides a different sound, any other advantages an exhaust kit (e.g. Boesch, Carven) have to offer? Any performance gains?

To me, the stock truck sounds great. Not sure I'd want to drop $260+ for a different sound...but that's just me.

Thx

 

[DailyRam]

There are performance advantages to just about all exhaust kits that are more free flowing than the stock exhaust. you may not always feel them, but if you're removing restrictions, you're increasing performance.
It's all about moving air, so the more air you can move into the engine and then out of the engine in an efficient manner, the better performing your engine will be.

 

[EJR_3]

Well put ^

 

[sbarron]

There are performance advantages to just about all exhaust kits that are more free flowing than the stock exhaust. you may not always feel them, but if you're removing restrictions, you're increasing performance.
It's all about moving air, so the more air you can move into the engine and then out of the engine in an efficient manner, the better performing your engine will be.

To a point... your engine also needs a certain amount of back pressure.

 

[BigRed4x4]

Only if you make sure to add the muffler manufactures sticker to your truck.

 

[DailyRam]

I've seen a lot of opinions and information on the topic of backpressure, and i've seen just as much information that refutes it as i do that supports it.
I think you'll find that there's a shift in where the power is. Application is key, or else you won't have people that dump the exhaust right out of the header.
With that said, my money will always be with a free flowing exhaust for performance. The only negative in my book is sometimes it's too loud for a daily driver.

 

[Granite-1500]

To a point... your engine also needs a certain amount of back pressure.

I've always thought the same thing, but then I see (for example) dragsters that only have about 2 foot of pipe coming out of each cylinder going up into the air. Obviously those engines & vehickes are worlds different than our trucks, but still curious to see if anyone has anymore information or experimental data or anything. Very interesting subject regardless!

 

[DailyRam]

There are a lot of studies out there, but my opinion is that within reason, a less restrictive muffler will be better than one with baffles that restrict air flow.

This is why they sell exhaust cut outs for high HP applications.

 

[huntergreen]

There are a lot of studies out there, but my opinion is that within reason, a less restrictive muffler will be better than one with baffles that restrict air flow.

This is why they sell exhaust cut outs for high HP applications.

all the electronic nannies limit if any gains from add on mods.

 

[VB712]

I love my magnaflow. Only thing that bugs me is when MDS is active, it sounds and runs like a blown up geo metro.

 

[ExpressRules]

If you put a cat back system on plus a catch can you will really feel a difference.

 

[WilliamS]

Sound and here is a short why.

Our trucks are N/A so they move air only through the normal ignition process. There isnt a turbo or supercharger pulling in more air to then need expel more air than the engineers designed the engine for. As well backpressure vs none, again this is a N/A motor, and back pressure will aid in fuel economy and toruqe at low rpms, but does restrict a tad on top end when revving out.

This is seen in many studies. This rule does have many exceptions. Truth is some companies like to exaggerate, or bend the facts to HP gains. Again you may get say that mythical 10hp gain with an exhaust, but at a certain rpm in the power band and likely in a place you commonly dont use and this is at the expense of low end torque. These are mountains of power difference on a N/A motor heck at 390hp they wont even been noticeable, the butt dyno will lie to you.

Now if you have a polished intake manifold, free flowing intake, larger throttle body, cam, no cats, then yes the last piece would be the muffler. Again this is stretch on the rules but still this engine would be designed for top end, not stump pulling so top end will show gains, down low likely not. Heck there are a few guys here that are decked out that can show you dynos, the top end picks up.


Get one you like the sound of thats the bottom line. We can get in VE variables, temps, pressures and make this a full on war, but short and sweet on an exhaust on a N/A truck is noise.

 

[Storm Trooper]

I was thinking about one until 1 went by house house with MDS active, sounded like a tug boat. I no longer have that itch.

 

[DailyRam]

You could always turn MDS off with a tuner.

 

[BigRed4x4]

I was thinking about one until 1 went by house house with MDS active, sounded like a tug boat. I no longer have that itch.

Yep. Pretty much forced me to either buy a tuner or put the stock muffler back on. I went with the tuner. But the tuner cleaned up the confused 6 speed so it was worth it.

 

[THETANK]

Only if you make sure to add the muffler manufactures sticker to your truck.

I was going to ask if you put the sticker on the back window will I gain hp. I have read on the internet that doing the sticker thing will gain you 25hp in some cases

 

[DailyRam]

Yep. Pretty much forced me to either buy a tuner or put the stock muffler back on. I went with the tuner. But the tuner cleaned up the confused 6 speed so it was worth it.

Diablo for the tuner?

 

[BigRed4x4]

Diablo for the tuner?

Yep, the I2 with a custom tune from hemifever.

 

[abouttobeglue]

Advantages of a good, loud exhaust:
Smile Everytime you crank your truck up
Wake your ******* neighbors up
Helps discover which interior panels are loose
Drowns out a talkative passenger
Thumbs ups from other drivers with exhaust
Conversation starter
Conversation avoider
Alarm clock
Let the wife know when you're on the way home without calling

 

[SyN]

NO! My only advice/opinion: Choose/select a muffler with a straight through design.