[Hero_Camaro]

Hey Guys,

I've always wondered about this why does the camaro have an ugly heavy muffler that doesn't do anything useful meanwhile the 5th Gen has a more lightweight stock muffler that is easy to store can someone really explain this for me?

[parish8]

I am curious how much it helps with aerodynamics?

[DaveC113]

Originally Posted by parish8

I am curious how much it helps with aerodynamics?

Probably quite a bit. It directs air under the bumper cover rather than having the bumper cover act as a parachute.

I think this is a big reason why many mufflers are designed like this today, another reason is the larger muffler will be effective at lower frequencies, overall it may give the exhaust sound engineers more latitude to play with how the exhaust sounds.

And yes, I'd be willing to bet every car mfg'er has engineers dedicated to making the car sound good. Probably more money into that than safety, lol...

I also have a hard time believing the aftermarket exhaust vendors are not dealing with the aero issues getting rid of the stock muffler will create.

[2SSRS@Gen5diy]

Originally Posted by parish8

I am curious how much it helps with aerodynamics?

It does that to some degree, but only as you go faster and faster, as to the OP GM likes to sell metal that's why the big suitcase in the rear, LOL.

[DaveC113]

Originally Posted by 2SSRS@Gen5diy

It does that to some degree, but only as you go faster and faster, as to the OP GM likes to sell metal that's why the big suitcase in the rear, LOL.

Ok, aerodynamic drag is related to speed, yes.

As for your conspiracy theory, GTFO with that BS!

[Umbriel]

I highly doubt, and I could be wrong, that aerodynamics become an issue with aftermarket exhaust until well over 100 mph.

[2SSRS@Gen5diy]

Originally Posted by DaveC113

Ok, aerodynamic drag is related to speed, yes.

As for your conspiracy theory, GTFO with that BS!

Please learn to read, LOL means its a joke, happy new year.

Originally Posted by Umbriel

I highly doubt, and I could be wrong, that aerodynamics become an issue with aftermarket exhaust until well over 100 mph.

Lets see my last on star report had me doing a lot of that at 132+ in the straight, all on the track guys so don't freak out, but have you ever been behind a car doing 65-75 MPH and you see there rear bumper flapping in the wind, i have lots of time so it starts lower then you think.

[Umbriel]

Originally Posted by 2SSRS@Gen5diy

Please learn to read, LOL means its a joke, happy new year.



Lets see my last on star report had me doing a lot of that at 132+ in the straight, all on the track guys so don't freak out, but have you ever been behind a car doing 65-75 MPH and you see there rear bumper flapping in the wind, i have lots of time so it starts lower then you think.

I have yes but I was referring to these cars in particular when I made that statement. I still have mine but it will be coming off as soon as my AWE catback arrives and I'll look at it at that point and address it then if it looks like an issue.

[parish8]

I was thinking more along the lines if mpg. If that unit back there reduces turbulence and gains .1 mpg then that’s the reason right there. Why wouldn’t hey do it.

[DaveC113]

Originally Posted by Umbriel

I highly doubt, and I could be wrong, that aerodynamics become an issue with aftermarket exhaust until well over 100 mph.

It'll cost some gas and contribute to lift, both of which are not good. Aero issues become somewhat significant at highway speeds and could actually effect lap times and handling at higher speeds.

Fuel economy is a big deal for car companies, so if it save .5 mpg at highway speeds it's very significant.

Only way to know for sure how much of an issue it is would be a wind tunnel or computer simulation though.

Originally Posted by 2SSRS@Gen5diy

Please learn to read, LOL means its a joke, happy new year.

OK, sorry about that. Lots of people accuse car companies of all sorts of crazy stuff. Maybe some of it's true, but I'd bet not a lot.

[parish8]

Originally Posted by YARBIE 1

emissions and noise, nuf said.

That muffler has no effect on emissions.

[vtirocz]

Originally Posted by Hero_Camaro

Hey Guys,

I've always wondered about this why does the camaro have an ugly heavy muffler that doesn't do anything useful meanwhile the 5th Gen has a more lightweight stock muffler that is easy to store can someone really explain this for me?

I agree with the others on aerodynamics.

Regarding the weight, I needed to drop the exhaust for my shifter change and it's a lot lighter than I thought it might be. I'd be surprised if the 5th gen mufflers (or aftermarket mufflers) are all that much lighter, but I'd love to see some data on this.