LG Headers Power Gains Question
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
And this is without a tune.
Instructor
Joined: Jan 2006
Posts: 143
Likes: 0
From: Keller TX
Picked mine up from LG today and I love the results. I'm at 370hp in an A6 with the LG Pro long tubes, a Halltech CAI and a tune. It really wakes the car up! They installed everything and had it ready to go in 6 hours.
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
I should be able to tell you on my own car shortly, although it does have a Callaway Honker as well.
I am always drawn to this graph though in any discussion about the LG Pros and how much power they can produce.
http://forums.corvetteforum.com/show....php?t=1413660 post #7
Power increases across the entire RPM range like that are impressive.
I am always drawn to this graph though in any discussion about the LG Pros and how much power they can produce.
http://forums.corvetteforum.com/show....php?t=1413660 post #7
Power increases across the entire RPM range like that are impressive.
Instructor
Joined: Jan 2006
Posts: 143
Likes: 0
From: Keller TX
Forgot to add I was at 343hp before the goodies per the pre-install pull. I'm at 6500 miles and I think that contributes to the decent stock number. The torque curve after the install is awesome as it pulls better at every rpm range.
Last edited by Rich S.; Mar 3, 2007 at 12:39 AM.
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
I installed a mild cam when I did mine in my 06 A6, stock was 337rwhp, after mods was 406.5, have installed a FAST intake, now up to 422.1, no ill effects on the tranny.Also running the headers and cats through stock exhaust.
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Former Vendor
Joined: Jul 2003
Posts: 836
Likes: 2
From: Tampa Florida GO NOLES!!!
St. Jude Donor '12
anyone get a gas smell when driving around? I had dynatech headers on my C5 and everytime I got out to go to work, people could smell a gas/exhaust smell on me. We checked for leaks many times, but came up empty. Want the power of the LG's on my magnacharged C6, but cant go smelling like a$$ as a financial advisor meeting with clients.
Thanks
Thomas
Tampa, Fl
Thanks
Thomas
Tampa, Fl
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
anyone get a gas smell when driving around? I had dynatech headers on my C5 and everytime I got out to go to work, people could smell a gas/exhaust smell on me. We checked for leaks many times, but came up empty. Want the power of the LG's on my magnacharged C6, but cant go smelling like a$$ as a financial advisor meeting with clients.
Thanks
Thomas
Tampa, Fl
Thanks
Thomas
Tampa, Fl
Former Vendor
Joined: Jul 2003
Posts: 836
Likes: 2
From: Tampa Florida GO NOLES!!!
St. Jude Donor '12
sure did. some of the 02 sensors had burned out in the back when the wire was laying on the headers. We ended up cutting them out, but im not sure if it burned out the cats when it overheated 1 bank of them...Pipe became rainbow colored on that side.
I want to do headers, but can't smell like exhaust when working, which is what I am trying to figure out.
Thanks!
I want to do headers, but can't smell like exhaust when working, which is what I am trying to figure out.
Thanks!
Melting Slicks
Joined: Jun 2006
Posts: 2,164
Likes: 3
I'm thinking of doing LG headers too, for me its all about torque, but I've got some concerns. After putting headers on both my Duster 340 and Challanger T/A back in 1973 I swore I would never ruin perfectly good cars like that again. The things always smelled, pinged, rusted, rubbed against stuff and I honestly felt no difference. I'm easily seduced by power however, and I hear so much good stuff about the 'new generation' of headers that I'm willing to unlearn that lesson. My concerns with the new headers are I hear things about various brands not fitting right (ARH), and leaking through the joints (LG). Am I worried for nothing?
Team Owner
Joined: Apr 2005
Posts: 27,596
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From: YOU SEE ... I'M NOT CRAZY ...I'M JUST AHEAD OF THE CURVE
St. Jude Donor '09-'10
I'm thinking of doing LG headers too, for me its all about torque, but I've got some concerns. After putting headers on both my Duster 340 and Challanger T/A back in 1973 I swore I would never ruin perfectly good cars like that again. The things always smelled, pinged, rusted, rubbed against stuff and I honestly felt no difference. I'm easily seduced by power however, and I hear so much good stuff about the 'new generation' of headers that I'm willing to unlearn that lesson. My concerns with the new headers are I hear things about various brands not fitting right (ARH), and leaking through the joints (LG). Am I worried for nothing?
I have LG on mine. Get em coated (inside and out) and as long as they are put on correctly you will have no problems ... and you will love em!
Team Owner
Joined: Aug 2003
Posts: 38,314
Likes: 35
I'm thinking of doing LG headers too, for me its all about torque, but I've got some concerns. After putting headers on both my Duster 340 and Challanger T/A back in 1973 I swore I would never ruin perfectly good cars like that again. The things always smelled, pinged, rusted, rubbed against stuff and I honestly felt no difference. I'm easily seduced by power however, and I hear so much good stuff about the 'new generation' of headers that I'm willing to unlearn that lesson. My concerns with the new headers are I hear things about various brands not fitting right (ARH), and leaking through the joints (LG). Am I worried for nothing?
I know first hand that the LGs install easily and are a quality piece. So are the American Racing headerss I am told, though I have heard of a couple of people having to remove their starters to install the American Racing headers. No big deal even if that is the case.
Headers will give you the low hanging fruit, the easy 25-30RWHP horsepower and more torque. For this, the LG Pros are hard to beat. A cold air intake and a tune to go along with them should put you around 380 at the rear wheels.
As far as rusting, I would stick with 304 stainless as opposed to mild steel to avoid corrosion and some consider coating, be they 304 stainless or mild steel.
Smelling is not a problem if you are running catalytic converters. Nor is pinging if the car is tuned well.
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
I'm thinking of doing LG headers too, for me its all about torque, but I've got some concerns. After putting headers on both my Duster 340 and Challanger T/A back in 1973 I swore I would never ruin perfectly good cars like that again. The things always smelled, pinged, rusted, rubbed against stuff and I honestly felt no difference. I'm easily seduced by power however, and I hear so much good stuff about the 'new generation' of headers that I'm willing to unlearn that lesson. My concerns with the new headers are I hear things about various brands not fitting right (ARH), and leaking through the joints (LG). Am I worried for nothing?
I know exactly how you feel. I had Cyclone headers on my 1968 Firebird 400 back in 1970 and I hated them. I crushed them twice because they hung so low, and I probably blew out at least a dozen header gaskets because I couldn't keep the bolts tight. At least they didn't rust out because I lived in Arizona.
I got back into it with my 94 Z28. I put on a set of mid length MAC headers that I had Jet Hot coated. They worked great, but I refused to get long tubes because of my bad memory of crushing the ones on my old 68. Finally I put a good set of Stainlessworks long tubes on my 01 Z28 and they tucked up so well I never even scraped them.
You can't go wrong with LG's, Kooks, or AMR's for the Vette. It's a very easy install (I have the LG Pros) and they tuck up so well I never scrape them. Plus, you really don't need to coat the stainless, they look good without coatings, won't rust, and already have a very low thermal conductivity.
Go for it! You won't regret it, it's the best mod I've done to my Vette.
Thanks,
Glenn
Drifting
Joined: Oct 2005
Posts: 1,549
Likes: 1
From: Roanoke Virginia
On dyno my Z06 I actually lost a few peak HP (LG Pro). I did a retune, and picked it back up. Similar experience with others, do not know about any other motors than LS7, sorry. However there is a significant "shift to the left" of power curves. Thus the area under the dyno curves is increased. The "feel" difference is quite significant, and noticible, enough to say it is a necessary upgrade. If you are going to NASA 3/31 at VIR, I'll be glad to show you.