Headers
Thread Starter
Staging Lane
Joined: Apr 2011
Posts: 78
Likes: 0
From: Grand Blanc, MI
Headers If I wanted to go with some aftermarket headers do I have to change anything else or I can just do the headers? If so what's some good headers? I have an 06 impala ss btw
TECH Enthusiast
Joined: Dec 2012
Posts: 696
Likes: 0
From: WEST PALM BEACH FL
https://ls1tech.com/forums/ls4-perfo...tures-lol.htmlThere is a sticky on the whole install if your car is stock the only mod will be some welding on the downpipe and doug thorly or obx
Thread Starter
Staging Lane
Joined: Apr 2011
Posts: 78
Likes: 0
From: Grand Blanc, MI
So when adding headers you really don't need to do anything else but just headers right. I know sometimes when you add or upgrade things you have to add something else lol and what's the cost of the obx
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Without other basic and more involved key mods..air intake, DP, Ls1/2/6 intake manifold, TB etc.. headers on these small LS engines will lose you a lot of torque down low but deliver good hp in the upper end unless you have a TEP trans with a 3.29 or 3.69 final drive ratio. Headers alone, waste of $$. Unless you are just going for sound and have a huge loud catback as well. 
TECH Enthusiast
Joined: May 2011
Posts: 518
Likes: 0
From: Iowa
the only way I really feel a loss in low end torque is if my cutout is open. Other than that it doesn't seem like I have lost much. I would have liked to get a dyno before install and then do another after install and a new tune.
TECH Enthusiast
Joined: May 2011
Posts: 518
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From: Iowa
Yeah that makes sense. It for sure doesn't hurt they have plenty of torque of the line and it pulls harder up high. Which I actually find more useful. I can't wait to do an intake manifold swap to really liven the car up
TECH Enthusiast
Joined: Dec 2012
Posts: 696
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From: WEST PALM BEACH FL
Yea before headers and ls6 im ls1 tb ls7 maf i was 270whp 274wtq with only magnaflow and no cat zzp dp and k&n hot air After all that 312whp 319wtq so thats 40+ all around the board with everything tuned properly
