XSPower Longtube Header Thread
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
Loudness, honestly I have ran both back to back and really could not tell a difference, if so it was very minimal! Hope this helps!
Safety Car
Joined: Sep 2007
Posts: 4,011
Likes: 492
From: South Florida
Well I added these to my bolt-on 99 6 speed car. I previously ran the SSAC headers and dynoed 315rwhp and I can't remember the torque. I put these on, did no additional tuning, and dynoed 331/343. I went to the track and on drag radials and put out an 11.80@118mph on a 1.74 60'. I then proceeded to make three more runs in the 11's. One @ 11.89, 11.99, and 11.9x. This puts me at #7 on the bolt-on list, and I believe #3 for the 6 speeds. I believe there are only 4 or 5 bolt-on 6 speeds in the 11's. The cars previous best was 12.37@115 on a 1.85 60' on the old headers.
These were a PITA to install and the clamps were pretty cheap, but they do perform. Once they were in they fit well, nothing hangs low except the clamps. I would have gladly paid an additional $50 for better clamps and three wideband plugs. If you don't run rear 02's like I do, you will need two additional plugs. Overall I am very happy with this product.
At the dyno day when my car was on the lift, everyone was oohing and ahhing at how shiny my exhaust was. It was a little embarrassing that I had an old 02 sensor plugged into the wideband bung.
These were a PITA to install and the clamps were pretty cheap, but they do perform. Once they were in they fit well, nothing hangs low except the clamps. I would have gladly paid an additional $50 for better clamps and three wideband plugs. If you don't run rear 02's like I do, you will need two additional plugs. Overall I am very happy with this product.
At the dyno day when my car was on the lift, everyone was oohing and ahhing at how shiny my exhaust was. It was a little embarrassing that I had an old 02 sensor plugged into the wideband bung.
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
thanks! Curious where you struggled on the install? I've installed a bunch now and all have been very straight forward.
If you are not running your rear O2's, note when purchasing and we will toss in 2 extra plugs for you
Clamps are being addressed to a lap band style!
Great numbers and results, they speak really well especially coming for headers already! And they do certainly shine!
If you are not running your rear O2's, note when purchasing and we will toss in 2 extra plugs for you
Clamps are being addressed to a lap band style!
Great numbers and results, they speak really well especially coming for headers already! And they do certainly shine!
Well I added these to my bolt-on 99 6 speed car. I previously ran the SSAC headers and dynoed 315rwhp and I can't remember the torque. I put these on, did no additional tuning, and dynoed 331/343. I went to the track and on drag radials and put out an 11.80@118mph on a 1.74 60'. I then proceeded to make three more runs in the 11's. One @ 11.89, 11.99, and 11.9x. This puts me at #7 on the bolt-on list, and I believe #3 for the 6 speeds. I believe there are only 4 or 5 bolt-on 6 speeds in the 11's. The cars previous best was 12.37@115 on a 1.85 60' on the old headers.
These were a PITA to install and the clamps were pretty cheap, but they do perform. Once they were in they fit well, nothing hangs low except the clamps. I would have gladly paid an additional $50 for better clamps and three wideband plugs. If you don't run rear 02's like I do, you will need two additional plugs. Overall I am very happy with this product.
At the dyno day when my car was on the lift, everyone was oohing and ahhing at how shiny my exhaust was. It was a little embarrassing that I had an old 02 sensor plugged into the wideband bung.
These were a PITA to install and the clamps were pretty cheap, but they do perform. Once they were in they fit well, nothing hangs low except the clamps. I would have gladly paid an additional $50 for better clamps and three wideband plugs. If you don't run rear 02's like I do, you will need two additional plugs. Overall I am very happy with this product.
At the dyno day when my car was on the lift, everyone was oohing and ahhing at how shiny my exhaust was. It was a little embarrassing that I had an old 02 sensor plugged into the wideband bung.
Safety Car
Joined: Sep 2007
Posts: 4,011
Likes: 492
From: South Florida
We didn't have the car on a lift, just jackstands. They were a PITA to get in from the bottom, possibly because the car wasn't high enough. The starter was a pain to remove/re-install again.
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
1st Gear
Joined: Mar 2011
Posts: 1
Likes: 0
I'm interested in these headers but have a few questions....
#1-Are these made in the USA? I have seen some people say it is and it has an American flag on the header... or are these made overseas? Some other people have also said they are not made in the USA... which is the truth?
#2-Are gaskets & extensions included?
#3-What is the warranty on these items?
#1-Are these made in the USA? I have seen some people say it is and it has an American flag on the header... or are these made overseas? Some other people have also said they are not made in the USA... which is the truth?
#2-Are gaskets & extensions included?
#3-What is the warranty on these items?
Burning Brakes
Joined: Oct 2001
Posts: 842
Likes: 3
From: Woodruff SC
St. Jude Donor '10
Question!
How do they look after being run? I've seen some nice looking headers turn to an eyesore after running. Should they be sent to be coated?
Anyone have pics?
Thanks!
How do they look after being run? I've seen some nice looking headers turn to an eyesore after running. Should they be sent to be coated?
Anyone have pics?
Thanks!
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
I'm interested in these headers but have a few questions....
#1-Are these made in the USA? I have seen some people say it is and it has an American flag on the header... or are these made overseas? Some other people have also said they are not made in the USA... which is the truth?
Made in USA, been assured of this from day 1. Issue has been beaten to death
#2-Are gaskets & extensions included?
Gasket are, extensions are not needed
#3-What is the warranty on these items?
No questions asked if you has a problem during shipment or fitment during install.
#1-Are these made in the USA? I have seen some people say it is and it has an American flag on the header... or are these made overseas? Some other people have also said they are not made in the USA... which is the truth?
Made in USA, been assured of this from day 1. Issue has been beaten to death
#2-Are gaskets & extensions included?
Gasket are, extensions are not needed
#3-What is the warranty on these items?
No questions asked if you has a problem during shipment or fitment during install.
Thread Starter
Former Vendor
Joined: Oct 2006
Posts: 7,331
Likes: 61
From: Port Huron MI
Race Director
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
Put me on the list or pm me a price I think I want the catted version just because of smell and add to more plugs please. rears o2's have been tuned out. . I have to ask is it worth the wait for the 1 7/8th vs these? I plan on supercharging next year