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Safe to run no catback?

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Old Jan 12, 2017 | 12:48 AM
  #41  
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I bought my C5 about 2 years ago. It came with electric exhaust cut outs. I usually left them open since the stock mufflers are so quiet. Then one of the motors failed in the open position. After that, I've left the cut outs permanently open. No heat related issues, although I do have turned down tips after the H-pipe, so the exhaust blows on the ground, not the leaf spring.

The sound is okay. I like it better than stock mufflers, but I would prefer a nice cat back sound. Before getting this one, I test drove a C5 with Borla exhaust tips, I'm assuming stingers. It was much louder than my car. But also sounded better. Had a deeper muscle car type sound. Mine sounds like an old truck or something at idle, but it sounds good when you rev it out. There is some drone at low rpm but it honestly doesn't bother me. But I plan to get a catback soon, because I think they sound better than no mufflers.
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Old Jan 12, 2017 | 01:06 AM
  #42  
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Originally Posted by Corvette#2
I bought my C5 about 2 years ago. It came with electric exhaust cut outs. I usually left them open since the stock mufflers are so quiet. Then one of the motors failed in the open position. After that, I've left the cut outs permanently open. No heat related issues, although I do have turned down tips after the H-pipe, so the exhaust blows on the ground, not the leaf spring.

The sound is okay. I like it better than stock mufflers, but I would prefer a nice cat back sound. Before getting this one, I test drove a C5 with Borla exhaust tips, I'm assuming stingers. It was much louder than my car. But also sounded better. Had a deeper muscle car type sound. Mine sounds like an old truck or something at idle, but it sounds good when you rev it out. There is some drone at low rpm but it honestly doesn't bother me. But I plan to get a catback soon, because I think they sound better than no mufflers.
I think you gave an honest interpretation of your experience. Cut outs just make noise.. there is no designed frequency cancellation... The cutouts only take some of the frequency reverberation, that's why they sound like a truck. Many people want loud with no regard for clean sound.
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Old Jan 12, 2017 | 03:41 AM
  #43  
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Bill , don't you ever feel the need to take a risk once in a while?

Do something different then what your teacher, or the textbook says?

Last edited by 1Willy1; Jan 12, 2017 at 03:45 AM.
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Old Jan 12, 2017 | 11:02 AM
  #44  
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Originally Posted by 1Willy1
Bill , don't you ever feel the need to take a risk once in a while?

Do something different then what your teacher, or the textbook says?
Certainly,
a good question..I've found that over my years on earth, smart choices are the product of good research. I'm not a text book Engineer, I'm a hands on Engineer, there is a big difference . A text book engineer can zero in on a destination, but a hands on engineer will put you at your destination.

Good engineering removes the risk..wouldn't it be a better choice to minimize risk, disappointment . Being a trail blazer is all about taking risks. As a designer,everything we design is a risk, but with research, we minimize risk . Text book is where most designs are born, they then are revised in the mind of a visionary. That's how the C5 was born..

You said how about taking a risk once in a while...

Over my life I've taken lots of risks... I took a risk marrying an 18 year old....50 years later we are still a loving couple.. ( risk well taken )

However, over the years risk taking has been littered with mistakes, disappointment, and time and mney lost.

A perfect example of a life lesson for me was throwing in the risk towel on buying cheap...too often a cheap purchase was a disappointment, a mistake, time and money wasted...I gave risk a try for 20 years...I make smart decisions now..
Over the last 30 years, I've said, I can't afford to buy anything too cheap..I came on to that cleche 30 years ago after 20 years of risk taking. My position on risk taking over the last 30 years has proven to me that it is a better choice .

Risk taking is risky...lol.. I'll avoid the risk if I can.

I don't buy anything too cheap because it is too risky.. taking a risk can be rewarding if the rush becomes a positive experience, but for me 20 years of risk taking was less positive overall, than avoiding risk, or minimizing risk.

Long winded ? For sure.Hopefully I answered your question. I don't take risks anymore, if I can avoid them. It's a much smarter choice for me.

I applaud risk takers because their experience,fuels my research.


When I look at reviews of a potential product or service, I always, look at the negative reviews first, I'm smart enough to filter out the clueless., the technically challenged , and those with an agenda.

Minimizing risk has worked very well for me over the last 30 years.

I DO take a risk, every time I come here lol. but the rewards out weight the negatives. My pm box is filled with rewards, about 20,000 over 16 years.

Bill aka Et

Last edited by Evil-Twin; Jan 12, 2017 at 11:08 AM.
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Old Jan 12, 2017 | 12:34 PM
  #45  
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First off, let me say that I am not a licensed engineer. However, I have had the pleasure working under mechanical, electrical and structural engineers as a designer for 30 plus years . That being said, I fully understand Bill aka Et's approach. Any licensed engineer, no matter what entity, have moral and legal obligations to provide safe and tested methods. I for one can tell you that I took it upon myself to make a call in the field once, that nearly cost a life and my job. Bill and I have had only one conversation, but I can tell you for a fact this man knows his $hit. If you haven't worked for an engineer, you would not know of the pressures they are under for most of their careers. I for one, enjoy the security of allowing these guys to carry that load. Putting me under an umbrella if you will. A lot of my knowledge has come from listening and self education. I am a huge open wheel (Indy and F1) fan. I can tell you, there are not many of us around in Mississippi. Nascar is king here . Back many years ago, I bought a book called "Engineering to Win". I have inserted the cover below (please read the cover). I recommend this read for "anyone" who is interested in the "how's and why's" of auto design. As far as that goes, its good for what ever you are designing as it applies to catastrophic failure by design. It emphasizes on "no excuse" for failure. I apologize for the rambling, I'm normally pretty quiet on these forums. Hope this helps.
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Old Jan 12, 2017 | 06:07 PM
  #46  
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Some of the quiet ones should speak up more. Every once in a while some helpful advice just come out of the wood work.
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Old Jan 12, 2017 | 07:23 PM
  #47  
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Originally Posted by Rob 02
Some of the quiet ones should speak up more. Every once in a while some helpful advice just come out of the wood work.
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