Headers and midpipe
Thread Starter
Advanced
Joined: Jun 2008
Posts: 72
Likes: 0
From: Jersey City New Jersey
Headers and midpipe
I am looking to go with LG longtube headers and highflow center section. I have a set of flowmasters on an otherwise stock exhaust. I am looking for some power gains which is why I want to get the headers but i am not trying to get crazy loud. how much louder will the exhaust be with the headers? Will it be much more streetable in terms of volume if I put the stock mufflers back on? I am trying to guage which is the best set up for power but not a deafening sound.
Pro
Joined: Feb 2007
Posts: 609
Likes: 2
From: Cranford NJ
Sound won't change a whole lot. The cat-back system has a greater affect on the sound than the headers and high flow cats.
I saw in your sig that you are from Jersey City, you are very close to us. You could come down to our shop and we could let you hear a few cars. You can decide for yourself which way you want to go.
Feel free to give us a call if you have any questions.
Julian
908-317-4496
I saw in your sig that you are from Jersey City, you are very close to us. You could come down to our shop and we could let you hear a few cars. You can decide for yourself which way you want to go.
Feel free to give us a call if you have any questions.
Julian
908-317-4496
Instructor
Joined: Jul 2006
Posts: 157
Likes: 0
From: Waterloo IL
Sound won't change a whole lot. The cat-back system has a greater affect on the sound than the headers and high flow cats.
This was true on my previous car, too. X-pipe alone made a difference, but when I added the headers, it really woke things up. And that was with stock exhaust (cat-back).
I should mention that I had the off-road x-pipe in both cases, so that may contribute.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
I am looking to go with LG longtube headers and highflow center section. I have a set of flowmasters on an otherwise stock exhaust. I am looking for some power gains which is why I want to get the headers but i am not trying to get crazy loud. how much louder will the exhaust be with the headers? Will it be much more streetable in terms of volume if I put the stock mufflers back on? I am trying to guage which is the best set up for power but not a deafening sound.
How much louder? A LOT LOUDER. not to mention the drone at 1500 rpms
I bought my LG Pros from a guy who 'wanted the best' but like to listen to soft jazz when he took is wife for a ride.
If you dont want LOUD, dont put on LT headers.
Go find differnt ppl in your area so you can listen and ride with them.
Then make a decission,
Last edited by AU N EGL; Oct 21, 2008 at 03:42 PM.
Burning Brakes
Joined: May 2006
Posts: 1,110
Likes: 16
From: stuart fl
i got the LG PRO longtubes with the high flow cats and mid pipe with stocck mufflers left on the car most people didnt even notice a difference a few people asked if i done something but they were not sure
i got some cutouts put on later and heres a video of Revs of only 3K open and closed, pretty cool mod
post #6 http://forums.corvetteforum.com/show...235&highlight=
good luck
dicky
i got some cutouts put on later and heres a video of Revs of only 3K open and closed, pretty cool mod
post #6 http://forums.corvetteforum.com/show...235&highlight=
good luck
dicky
Instructor
Joined: Jul 2006
Posts: 157
Likes: 0
From: Waterloo IL
I don't think the street series will be much different.
I did forget to mention that the Flowmasters have a terrible resonant drone at 1500-1700 RPM.
A guy I know with a C5, LG Pros and Corsa Sport system does not have the drone, so I think it's more a function of the muffler system.
I'll probably put the stock system back on mine to see how it sounds. If it quiets down too much, I guess I'll have to pop for the Corsa, but I hate paying $1100 for something that doesn't add any appreciable power.
I did forget to mention that the Flowmasters have a terrible resonant drone at 1500-1700 RPM.
A guy I know with a C5, LG Pros and Corsa Sport system does not have the drone, so I think it's more a function of the muffler system.
I'll probably put the stock system back on mine to see how it sounds. If it quiets down too much, I guess I'll have to pop for the Corsa, but I hate paying $1100 for something that doesn't add any appreciable power.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Pro
Joined: Apr 2007
Posts: 663
Likes: 0
From: Arvada CO
I will not disagree with you. After listening to my car scream (and back-fire) everytime I go above 3000 rpm for over a year now, I am ready for a change. I think I will change out my corsa sports and put my stock mufflers back on. I want to compare what the kooks headers and hi flow cats sound like through the stock mufflers vs the corsas.
Former Vendor
Joined: Aug 2005
Posts: 16,897
Likes: 412
From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
Hi guys,
I might agree and diss-agree with some of the comments.
Being here at the shop of course I see a lot of different combinations of exhaust. After installing the LG Pro's on my own 2006 M6 and keeping the stock mufflers at idle I see little to no change in pitch or volume. Cruising conditions, the car was almost exactly the same, maybe a slight increase in volume. WOT, the sound is night and day difference.
On average with just installing the LG Pro's (or Street's) on a stock car you will see a 24-30 rwhp gain and 28-35 rwtq gain even using stock mufflers.
Now changing the mufflers on the car will do more for sound and looks than what it would HP. I did change to a larger 3" Borla system from a Z06 on my own car and saw another 8 rwhp over the stock units, but that is typically on the higher side for a stock engine car.
With that being said, installing a set of LG Pro's and stock mufflers should change the volume almost nothing, and no drone.
Let me know if you have any questions, always glad to help.
I might agree and diss-agree with some of the comments.
Being here at the shop of course I see a lot of different combinations of exhaust. After installing the LG Pro's on my own 2006 M6 and keeping the stock mufflers at idle I see little to no change in pitch or volume. Cruising conditions, the car was almost exactly the same, maybe a slight increase in volume. WOT, the sound is night and day difference.
On average with just installing the LG Pro's (or Street's) on a stock car you will see a 24-30 rwhp gain and 28-35 rwtq gain even using stock mufflers.
Now changing the mufflers on the car will do more for sound and looks than what it would HP. I did change to a larger 3" Borla system from a Z06 on my own car and saw another 8 rwhp over the stock units, but that is typically on the higher side for a stock engine car.
With that being said, installing a set of LG Pro's and stock mufflers should change the volume almost nothing, and no drone.
Let me know if you have any questions, always glad to help.
Le Mans Master
Joined: Mar 2002
Posts: 5,253
Likes: 50
From: Sandy Eggo Calif.
St. Jude Donor '06-'07-'08-'09-'10-'11-'12, '16
Pro
Joined: Mar 2007
Posts: 585
Likes: 0
From: Coral Springs Florida
LG PROs are crazy loud. anyway you put it.
How much louder? A LOT LOUDER. not to mention the drone at 1500 rpms
I bought my LG Pros from a guy who 'wanted the best' but like to listen to soft jazz when he took is wife for a ride.
If you dont want LOUD, dont put on LT headers.
Go find differnt ppl in your area so you can listen and ride with them.
Then make a decission,
How much louder? A LOT LOUDER. not to mention the drone at 1500 rpms
I bought my LG Pros from a guy who 'wanted the best' but like to listen to soft jazz when he took is wife for a ride.
If you dont want LOUD, dont put on LT headers.
Go find differnt ppl in your area so you can listen and ride with them.
Then make a decission,
I don't mind the loud (outside) but the interior noise with the "drone" can be annoying
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
I also have a C6 M6 with Flowmaster's, I chose this exhaust with idea of purchasing Pro's eventually as apposed to the mega buck cat back only. I also have a C5 with Pros to a Bassani cat back, when the Pro's were installed their was a dramatic increase in sound volume & a different sound as well.Here's my performance comment, spent a few hours on a Mustang dyno with the C5. There is a flattening in the torque area around 3400rpm, we made a few attempts with timing & fuel to improve that with no results. The dyno operator/owner commented that he had Hi HP Ford motor that had a almost identical flattening of the troque curve, he dug out the dyno sheet showing that & the results of correcting the problem. The solution was the removal of the 3' to 2.5' step in exhaust, in other words 3' exhaust all the way. My plan is to eventtually to add the 3' cat back to my C5 & re dyno, same dyno.
I also like the sound of the Flowmaster's & have never noticed any drone other than startup.
I also like the sound of the Flowmaster's & have never noticed any drone other than startup.
