Borla vs Corsa
The thing about a great Tech is what he feels by the seat of his pants or pure instinct, engineers it's all on paper with formulas and diagrams, it's the real world that determines what works or not. That is way so many cars or anything in this world don't work like designed. Why does a guy with all the big credentials have to keep telling everyone how great he is ??? Why do you not see any posts from him in the Tech section ?????????????????? How does he know so much about products he has never used ???? Think what you want I have all the talent in the world and no one can take that from me especially with words.
As far as the intake goes, I'm in California and I didn't really want to hot smog my corvette, so the CARB certified options were the K&N 57-3035 FIPK and the Callaway Honker. I haven't dyno'd my car since the install, so I can't report the power gains in numbers, but it was immediately noticeable and I'm pretty happy with it. The sound is also amazing, there's a more distinct "woosh" from the air getting sucked in from the radiator area. Between the Borla and the K&N intake my car sounds like something that happens when a muscle car and jet engine love each other very much. It shakes the ground at open throttle, but it's fairly quiet and rumbly at low RPM. That's why I'm plugging Borla a little, I'm really happy with how my car sounds, not reporting "well it doesn't drone, but it's tinny" or something else like that.
As far as the intake goes, I'm in California and I didn't really want to hot smog my corvette, so the CARB certified options were the K&N 57-3035 FIPK and the Callaway Honker. I haven't dyno'd my car since the install, so I can't report the power gains in numbers, but it was immediately noticeable and I'm pretty happy with it. The sound is also amazing, there's a more distinct "woosh" from the air getting sucked in from the radiator area. Between the Borla and the K&N intake my car sounds like something that happens when a muscle car and jet engine love each other very much. It shakes the ground at open throttle, but it's fairly quiet and rumbly at low RPM. That's why I'm plugging Borla a little, I'm really happy with how my car sounds, not reporting "well it doesn't drone, but it's tinny" or something else like that.
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

Last edited by Fast Cars & Horses; May 4, 2017 at 11:02 AM.
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 ***.
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
This has always boggled me. If you're so smart about everything, go help people in the Tech section with more complicated problems rather than b*tch and complain about people putting swirls marks in their paint.
The Best of Corvette for Corvette Enthusiasts

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: No I get a lot of flack from a very few pathetic individuals.. individuals... people like you
With 15 ,000 visit to my home page and 40,000 pms most askijg for help..
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.
Just go to my home pager a read some of the open message comments, those are backed by thousands of Private messages... where people refuse to talk in open forum because of ******** like you.
You are a few small minority..
Just for example... you quoted me
. pointed out that I said I know everything about this Corsa system..
then with your alternative facts and pathetic spinning, you mocked me because said I heard from Corsa Engineers..
You are so stupid an unattached to reality you could not get that I learned everything I know about the Corsa system by being involved with the Corsa Engineers. They taught me all I know... Just like I taught 5th and 6th year engineering students who spent 6 month with me in Gm's engineering center doing their required co-op field training in the hope of getting job with Gm after graduating..
I know a lot of stuff, and I learned it from other people.. I have 2 engineering degree, one in Mechanical Engineering BSME and one in Industrial Engineering Energy Management. Other people taught me the disciplines I know... just like all of the professors who taught me in our 80 hours a year required advanced engineering learning program.
There are a very few of you and thousands of them people who respect me and quietly seek my help and advice... in this very quote you made an *** of your self.. not seeing or having any reading comprehension.,.
And I just acknowledged Knowing all I know because Corsa engineers taught me all I know. I don't fear the flack I get... I enjoy it because nothing make me feel better than to point out ******** like you.. you, like a few others could never Hang with me.... am I arrogant.. absolutely, but only to people like you... you bring it on.. and I welcome it... it helps me to point out to those newbies who they should never listen to people like you here on this forum.. you make this statement of mine very credible..
You think I am crying because I get a little flack from people like you...???? again you are delusional.. Its actually comical.. and not only to me... other have told me the same thing..
Bill







I've never had any swirl marks because I know what I am doing.. the thread evolved into how those swirl marks get there in the first place.. and I offered my very expert opinion, on the subject... can you see why offering help and answering the question of the op about what products I use... and you somehow turning that into me bitching about swirl marks makes you the ******* you are. I never bitched about swirl marks.
I've never had any swirl marks because I know what I am doing.. the thread evolved into how those swirl marks get there in the first place.. and I offered my very expert opinion, on the subject... can you see why offering help and answering the question of the op about what products I use... and you somehow turning that into me bitching about swirl marks makes you the ******* you are. I never bitched about swirl marks.
Paint correction..... it's laughable.... and as I've said many times... if there is something wrong with your finish, it's your fault... swirl marks are man made caused by " rubbing a finish, daily weekly or monthly... it's obvious that quick fixes are the term junkies use when they need to spend lots of money to get a high..... I've not touched my finish in two years... I've been too sick and been in and out of the hospital over the last year..
You guys keep following the blind, and I'll use this to get a laugh.
To say what I have done and the process I've used based on my budget and available time is "laughable" is an insult. Would I like to be able to "do it right according to ET or the other guy rubbing plumbers putty all over his car", sure, why not? However, I don't have hours upon hours of time to follow the steps you've used in the years past. I am starting 17 years AFTER you started, and on a platform that was already compromised.
Are you that blind that you don't see why people are ******** to you when your responses are all in this tone? Look at his response to you. Jesus man, you must be heavy on the autism spectrum because you don't get social cues at all.
Last edited by Acid666; May 4, 2017 at 12:10 PM.
Yup, now go back to the beginning and see how it all started. And then watch how ET derails threads by undermining anyone elses experiences and knowledge and pushes his own as the only way.
OP asks about 2 exhaust, and drone
Expert jumps in and says Corsas have no drone, Borlas do.
Few people pop in say Corsas have no drone.
1 Post for borlas, says it has a little drone
I pop in and say I don't have any drone
Scylla pops in and says he's got no drone
Resident expert jumps in and says "OK you guys with conditional drone... you are way off base..."
Presents his "facts".
Expert gets told his statement is wrong and that engine lug makes a huge difference in sound.
Expert gets mad and issues another statement starting with "FOR THE LAME AND CLULESS" followed by "I've been doing this for 40 years and you are one of those wanna bees that continues to make an *** of yourself"
So yeah. Talk like that to people that contradict your "facts" with their own knowledge of the subject and see how it goes. Can you blame people for blowing up on him where there's a chance he's not always right?
OP asks about 2 exhaust, and drone
Expert jumps in and says Corsas have no drone, Borlas do.
Few people pop in say Corsas have no drone.
1 Post for borlas, says it has a little drone
I pop in and say I don't have any drone
Scylla pops in and says he's got no drone
Resident expert jumps in and says "OK you guys with conditional drone... you are way off base..."
Presents his "facts".
Expert gets told his statement is wrong and that engine lug makes a huge difference in sound.
Expert gets mad and issues another statement starting with "FOR THE LAME AND CLULESS" followed by "I've been doing this for 40 years and you are one of those wanna bees that continues to make an *** of yourself"
So yeah. Talk like that to people that contradict your "facts" with their own knowledge of the subject and see how it goes. Can you blame people for blowing up on him where there's a chance he's not always right?








:




