I've been in a new camaro with the ATAK exhaust alongside headers and a big cam. That car was literally dead silent as far as drone goes when cruising.

My my car has borla as well, it burbles along when cruising and screams when not, but there are no uncomfortable resonances until 85mph+ cruising, which I never do.

Personally, I don't think corsa exhausts sound very good. I would rather deal with a touch of drone than have the corsa exhaust note, but that's just me. My stock exhaust actually burbled just as much as my borla does, though it obviously wasn't drone.

 

when cruising as a sustained speed in the 1500 ro 1800 range, whether you have an automatic or you are in 5th gear... as long as the motor is cruising in a sustained rpm range, it produces the same frequencies response. 1500 rpm in 5th gear sound exactly like 1500 rpm is 6th gear.


This statement IMO is wrong, engine lug makes a huge difference in sound, rpm has nothing to do with it, 1500 in 4th or 5th is much different than 1500 in 6th because 1500 in 6th is bogging the engine big time !!!(at least in my Vette)

 

Sounds more like a Corsa to me...ha ha!!!

 

This' the C5 section, so...

 

Just FOR THE LAME AND CLULESS... I said " cruising at a sustained rate of speed. " No lug and no load...5th and 6th gear are over dive gears with less than 1:1 ratio, so no load there either.. people do not cruise the highway in 4th gear, but you would have to know something about automotive technology to understand that. I guess the clueless seem to read what every they want and jump at the
opportunity to show just how much of an ******* they can be.. Pounder you could not carry my jock strap... let alone my tools on your best day let alone pretend to kno9w something about automotive technology.. you seem to love to stalk and quote me then come out looking like a fool... adding your own uneducated spin... I've been doing this for 40 years and you are one of those wanna bees that continues to make an *** of yourself.. its actually comical and one of the reasons I come back here,, you keep trying to stick your finger in my eye and you just wind up putting your finger in your ***.

 

by the way I do cruise in 4th on the X=Way from time to time !!!

 

no load in 5th or 6th ???? WHAT ??????

 

I have a C5 and a C6, but the Borla happens to be on the C6 so I felt like it was appropriate to reply...sorry for the intrusion!!!

 

Thanks for all the advice...I bought the borlas...
Now what about air intake???

 

Vararam is the only true ram air intake. I have one on my C5 and I noticed the increase in power immediately.

 

Lol
1) Make a new thread asking which intake to get
2) Watch ET step in and derail your thread with non-stop back patting and "I'm right and I'm an engineer herpa derpa" talk as he claims the stock intake that was designed for the C5 is the greatest thing since the Wendy's Baconator
3) Proceed to buy the opposite of what ET suggests
4) Win at the internet for the day


PS - the Corsa Indy exhaust in the video on page 1 sounds like a diesel that had pennies dropped into the chambers. LOL.

 

Im just waiting on the Big Mac vs baconator info. Been tossing up which I should put in my gas tank for a while now.

 

It's not that. The C5's exhaust is quite a different configuration than a C6, not to mention a different engine. Apples/crabapples.

 

I think the remarks calling your Corvette forum buddies lame and clueless is crude and shows no class and is inappropriate for this forum!!!!

 

drone = crank stereo up

 

:
He wasn't talking about his CF buddies. He was talking to Pounder.
Like him or not, Bill's science based data is correct. Why dispute it?

 

I had Borla Stingers on my car (they are for sale right now..parting out) they had drone

wife had Corsas...no drone but IMO they sound tinny



its personal preference

 

Even my corsa extreme doesn't drone with LTs and a catless X

 

My point about the Corsa System , like everything else that I comment on, is that their are compromises. Borla has a more aggressive note for sure.. the reason is because its designed that way. But what I was told by Corsa sound engineers is this... the LSX motoe puts of very unique harmonics. Part of that reason is the unique fire ing order. For Corsa it was a challenge to free up the flow of the stock system deliver a better sound, and primarily have no drone at any rpm range.

The engineer use very sophisticated equipment
to " Bend and shape the exhaust note. ).... they do this with the focus on drone.,.. Drone is seen on a oscilloscope as "White noise".... in the tuning process they look for this white noise and have to tune it out

The motor puts out a specific frequency but different at all rpm ranges. The engineer have to Bend a shape to exhaust note at each rpm range to cancel any white noise. White an LSX motor, they only have so much to work with, I was specifically told that they focus on Idle, WOT, and very specifically Cruise range since this is a sustained range where drone can and will be uncomfortable to the demographic ( those who where the target market for this car when it was New.

So like everything else there is compromise, take from here to give to there. I was told these three parameters are where the give and take come from... I was told with an LSX motor you can no bend and shape all there areas to produce great sound. you can only have two of these three areas..and still have clean ( No white noise ) at cruise, which was the primary focus. So with Corsa they bent and shaped the cruise area to make it drone free, and in order to do that, they took from the idle frequency and left the WOT area to sound great. This left the idle note a compromise to achieve a no drone system.

These are the facts.... I know this because I was there when it was done.. But like everything else. exhaust notes are a compromise.. you want a more aggressive note as in the Borla system.. that's fine but Borla designed it that way. and left lots of white noise at cruise in order to have a more aggressive note at Idle and WOT. they could not tune out the white noise and still achieve the aggressive sound they wanted..

There i8s no magic here. the motor puts out specific frequencies. fine tuning can change the sound. Borla could have removed all the white noise, but would have had a less aggressive sound. They chose to keep the white noise.

Ive come here for 16 years offering good sound advice, insider information you could never find in a book. I've talked about things that wound u on the cutting room floor, things that never made it into the design. I spent 80 hours in the wind tunnel to achieve the Cd that was unprecedented at the time. I know the C5 Coupe is slightly more aero slippery than the Z06.

I know about this car and the information I give is not hearsay. I offer this information up freely but at a cost of having to deal with some very pathetic wanna bees. I don't come here to argue.. Ive never started a fight with anyone, but when someone quotes me, and stalk me and offers up BS. directed at me, or this design, at the expense of the corvette forum membership, I will fight back..

The stalkers use alternative facts to try to discredit my comments..Its what some people do on internet forums. WE all know that.. that's why I always say be very careful who you listen to on this forum..
So I offered up my association with Corsa design, I offered up information as to why Corsa has no Drone and Borla do.. the choice is yours, and now you know the compromises associated with that choice.

IM not putting Down Borla, they sound great but for me and many others, its not something I would want 24/7. I want a clean ( white noise free ) exhaust note no mater what rpm range I am in. 40 to 50 % of the people out there do not know what drone actually is, the associate drone with volume ( decibels Db or Vu volume units ).

Forgive me for my crudeness earlier, but this joker who stalks me dialy seems to have a neediness complex, he even went as far as PM ing one of my friends, ( I have the PM ) from a very trusted member of this forum who has been here just as long as me.. where this joker begged him to try to get me to like him.. this quy has taken cheap shots at me in open forum since he has been here... posts a thank you to anyone who have cheap shoted me , and then Pm me offering me to be his friend. What a convoluted needy person. His comments are very entertaining to me, and like very thin soup, most of his comments have very little substance.

Just sayin

 

Woah woah woah woah slow down soldier. Now you're saying "I was told this", "I was told that"
This is your problem, and why people don't like you. I'm gonna spell it out for you so maybe you can see why you catch such flak.

Yet, now you're claiming these things:


So why would you need TO BE TOLD anything when


Now let's address this point
Here's an old quote from you as well on the same topic.
You know why you get a lot of flack? Your arrogance in your responses is part of the reason you get a lot of the disrespect. I give you credit where credit is due, but you're not right about everything. Your posts often come across as what I'll describe as "pulling the engineer card". How do I know? I'm a designer and work with a lot of engineers. When I see a problem with something I'm modeling up, I present it and show how it conflicts, and try to present 2-3 paths to correct it. Occasionally I'll get them fighting back and disagree with me, which is fine. But sometimes they'll pull the "I want it this way, because I'm the engineer". Which is fine too. Your name is the one on the "APPROVED BY", so it's your problem when the machine shop calls and has issues with manufacturing. They don't want to take in my expertise in mass manufacturing & designing to GD&T standards then that's fine, but learn from my mistakes, and I'll give you the same benefit of the doubt. Your constant arrogance just SCREAMS "I don't care what you think, I know more than you" even without knowing any of these peoples backgrounds

The other side of the coin is the "Wisdom of the crowd" mentality. A large group's aggregated answers to questions involving quantity estimation, general world knowledge, and spatial reasoning has generally been found to be as good as, and often better than, the answer given by any of the individuals within the group. An explanation for this phenomenon is that there is idiosyncratic noise associated with each individual judgment, and taking the average over a large number of responses will go some way toward canceling the effect of this noise. Like I stated, I value your opinion. And I don't believe that the wisdom of the crowd concept is always right.... But neither are you.

I do believe that you do get a lot of hate because you're MOSTLY correcting people with the right knowledge. But sometimes it comes across with a smugness of "Well my sh*t doesn't stink and I'm an engineer". I value your opinion, but I also take it with a grain of salt.
You often jump in threads and derail them, followed by being condescending when you respond. Then you follow up with "I'VE RECEIVED 40,000 PMs FROM PEOPLE ABOUT THIS TOPIC AND HAVE BEEN THANKED ENDLESSLY BEHIND THE SCENES."
Yeah yeah yeah. No one cares.