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I have 2004 DC and I am trying to get some more power out of it. I think my factory exhaust manifolds have a leak so I am either going to replace or replace with headers. Anyone share their experience in adding the headers whether or not it was worth it? Or better off maybe getting new factory and or just gaskets?

I asked 4 exhaust shops all said don't go headers they aren't worth the headache. Thoughts? Looking at JBA Ceramic Coated....
 

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Leave it as stock as Our Old Trucks are.
How many miles on it?
If you were rebuilding entire Engine/Drivetrain, HELL YES to tuned headers!
There are great replacement pipe/Cat Conv systems available and guarantee a tight exhaust system.
But of course it's always your choice.
152406
 

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It has 95K currently very well taken care of. I here slight ticking and I think its in the exhaust up front and I have heard these manifolds are notorious for leaking. I need to get out there with a spray bottle and soap and pin it down.

Also looking to just add more power to it.

So far just added exhaust and K&N and sprint booster. But seams like there's not many other options to get power out of these rigs unfortunately. Was going to do a CAI but heard its not much better and in some cases worse so i just went with the filter.

Thanks for the input!
 

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That is the same I have on my 2006 DC Limited. I tried the K&N Oiler but saw no appreciable uptick.
Replacing my VC Gaskets/S.P. Tube seals, removing/cleaning my Throttle Body, new pcv, and fixing any/all vacuum leaks did more! I will be cleaning fuel injectors & repacing O2 sensors sooner than later too.
Radiator/Block flush as well.It is only fluid left still fully Original.
And runs GREAT!

At nearly 100K they deserve lots of loving attention!
 

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It has 95K currently very well taken care of. I here slight ticking and I think its in the exhaust up front and I have heard these manifolds are notorious for leaking. I need to get out there with a spray bottle and soap and pin it down.

Also looking to just add more power to it.

So far just added exhaust and K&N and sprint booster. But seams like there's not many other options to get power out of these rigs unfortunately. Was going to do a CAI but heard its not much better and in some cases worse so i just went with the filter.

Thanks for the input!
Get a piece of fuel hose about 2 - 3 feet long and put one end near your ear and use the other end as a "stethoscope". Move it around the X manifolds and heads. You'll be surprised at how easy to hear the X leaks are.
Have fun!
 
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I, too, had my manifolds crack about 16 or 17 years ago. I put JBA headers on it then, and they have been fantastic and totally trouble free ever since. They are, as you know, not long tube headers, so their performance addition is limited. Probably just sound better as I like the sound of headers. They certainly don't hurt performance in any way.

My cracked manifolds were covered under warranty as my truck is 2001 and Toyota got replacement stock manifolds and let me bring my own JBA headers to them and they installed them for free! They also gave me the new, replacement manifolds to take with me in a box!
 

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My 2001 Lemon Tundra Ltd had the exhaust mains weld to the heads and were replaced free on the Down Lo by Toyota but so any other things fell apart on it they let me trade up to shut up for my Brand New 2006 Ltd 4X4 Everything Loaded.
Instead of $46K drove of for $23K plus trading Lemon in.
Sept 05, 2005 right off Delivery Carrier from Indiana.
Glad your 01 still rocks!
The headers do sound great I bet.
 

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Do not waste money on headers. To pinpoint leak you could use a shop vac and blow air through the tailpipe while the engine is cold, then decide what to do. Some on this forum who had cracked headers took and got them welded.
 

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WHATEVER......I had headers on my 2000 and could take my 07 anyday, it was a bat out of hell. I took on a 5.7 tundra up a hill with my 4.7......(2 wheel drive and light) goodbye. Plus, screw those original manifold leaks. I never , ever had a problem.
 
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