the C-6 mufflers look like the same ones that were on my supercharged GTP rental car i had in fla in feb. the fact there is no right angle turns in the exhaust of a C-6 means less back pressure.

 

IMHO those reverse lights look much worse than the slits.

 

What really gets me is that after seeing close-up photos of the rear exhaust you can plainly see that the actual exit pipe of the muffler exits as one pipe and then they hang that "fake" twin chrome pipes onto it...IMO...kinda cheap looking... and don't get me started with that hunk of gray plastic hanging underneath the rear fascia...

 

I think you have misjudged the tips. Check out the pic below. I think they look cool.

 

Whoops...I mean check out the link below:

http://speedcat.baldoria.ch/shared/p...tte C6_010.jpg

 

$%&^#@#$ One more time

http://speedcat.baldoria.ch/shared/p...tte C6_010.jpg

 

Ok...If it doesn't work this time I am giving up. Check out pic#10, I think you might change your mind.

http://speedcat.baldoria.ch/shared/pictures/chevrolet/

 

The splitters aren't fake. The inside of the tips have holes that sure look functional to me.

 

Mr Roy, what I'm saying is that the there is only one tube which comes out of the muffler and then they attach a split exhaust tip...unlike the C5 which has TWO tubes coming out of the muffler and then ends in TWO separate exhaust tips.

 

Either way it's just for show.

 

This is an example where GM just does not pay attention to details. Imagine if you bought a new Ferrari with this kind of sloppy engineering? There is no reason why they could not have done the splitting inside the muffler, other than the muffler engineer didn't want to do the extra work (and, yes, I agree that it would be more work to get the same noise level, and gas flow).

Michael

 

I didn't realize world class handling and 400 HP at mid 20 mpg was sloppy engineering.

 

why cant they just have one tip per muffler....like the stingers with 1 tip each, it looks better anyway. I know its a subjective statement. But then again no one likes a useless apendage, like a non functioning finger or something.

 

I don't see what the problem is, most of you will replace them with something that looks, sounds and performs better anyway.

 

The amount of testing that we have done on the C6 to certify the exhaust system would blow your mind. The simple fact of the matter is that most of you criticizing the tips don't have a clue about the noise certification tests that we run to make a car legal for the street. Not only the streets of America but Europe as well. Europe has even tougher restrictions on vehicle pass-by noise which makes the task of designing the exhaust that much more challenging. I love the exhaust note on the C6. The idle is deep, low, and even. You won't find any washing machine noise coming from those mufflers and tips. That is by design and if you look closer inside the tips you will understand how we achieved that. The RPM band is boom free because "this isn't a kid's car." It is a refined automobile. The throttle run-up is crisp and clean, no burble, no backfiring.

Don't get me wrong...I love exhaust boom as much as Todd, but I also have a job to do. That is why when you see the exhaust on Z06 you are going to owe me an apology. The car is a chameleon, all things to all people. Too bad you will have to wait a while for me to explain and don't bug me I am not going to tell you.

 

You should all read this brief thread:
http://forums.corvetteforum.com/zerothread?id=824158

Duke

 

Some of us do, and have even done testing. Most of the muffler engineering is done by the vendors, not GM engineers. It could have been done, but someone along the way decided it wasn't important. Even a false back on the muffler would have done the job.

You can still meet your targets for horsepower, and fuel economy, HVAC performance, noise performance, etc., but have sloppy engineering. I say it is sloppy engineering to have anything on the car of this calibur that is fake or looks fake. Plus it is an embarrassment.

Example: My C5 has a great air conditioner. They met their targets. It cools well even at 110 degrees out. However, if I turn the AC compressor off on a cool day (in auto mode), and later start a cold engine, the system turns the blower on full blast, even though the coolant and outside air temperature are cold. That's sloppy engineering.

Michael

 

A false outlet on the muffler was not acceptable! We tried several different tuning configurations with two outlets per muffler. Improvements in back pressure were minimal and all of them increased sound power at the tailpipe outlet. In most cases the sound power increase was between 2-4 dB(A). The C6 is engineered on the edge and all of those tuning combinations pushed us over. They all added mass and most of them sounded like crap. That might be okay for Todd, but not when you are producing a car for mass production. I find your sloppy engineering comment offensive...If you look closely at the inside of each tip you will see several holes on the inside. In between the inner and outer layer of each tip resides acoustic absorption material. Those tips which you call sloppy engineering absorb high frequency content much like a bottled resonator.

What I also find offensive is your comment about GM engineers. Our suppliers don't do everything for us. On a car like the C6 and the next Z06 they are clueless in most respects about vehicle level integration and what it takes to make an entire car saleable. I have personally architected the tuning code for the next Z06 and it is a doozey. Let me tell you something...the engineers on Corvette are the best and brightest in GM. When you insult us at large you are insulting the best that America has to offer and I also find that offensive.

 

After seeing every square inch of the C6 in person this past week, including the mufflers, I'd have to say that the comment that comes to mind is "attention to detail." Looking at the exhaust and other components, I'd have to say that the GM engineers did the best job possible given the requirements they were given (Federal requirements for emissions and noise.) Nobody could have engineered it better.

 

Thanks scissors.

Duke,

Great link to previous thread.