Aftermarket Exhaust Manifold ??
Who has changed the exhaust manifold on a 2006 5.9 cummins ? what changed and did you like it? I am leaning to the BD Pulse Manifold. I am looking for lower EGT's and mileage.
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No one ????
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Kinda like to know myself. I went on the cheap and ported it myself, then I heat wrapped it as well as the hot side of the turbo. Turbo spools up much faster and also lowered EGTs a bit.
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Originally Posted by Bigg Redd
(Post 1059995)
Kinda like to know myself. I went on the cheap and ported it myself, then I heat wrapped it as well as the hot side of the turbo. Turbo spools up much faster and also lowered EGTs a bit.
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I hear ya. I took my time at this. A buddy of mine ported his with good success. He lent me his tools and gave me pointers as I did mine. I just didnt jump into it blindly. I likely would have f#*ked it up for sure. Im a cheap bastard. I hear good things about those aftermarket manifolds. If mine ends up cracking, then i'll likely get one myself, but its been a few years now and so far no cracks. I will usually pull the manifold blanket, after towing my travel trailer, and inspect for cracks. None so far tho.
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If you are going to port your stock manifold, put gasket
over hole, color with marker. take gasket away and grind away marker area. Just blend it in. |
Yep, thats the way its done......:tu:
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Thats what I did with My IDI's Exhaust man. , Now I'm doing HG's ( not related ) .. just waiting on gasket set ...
I put a 3 pc on my Cummins 12V, Made a world of difference in spool and reaction time... Turbo gets lit fast now .. |
I should probably look into an aftermarket again. Im quite sure an aftermarket still outflows a ported stock by a substantial margin. Im sure I can recoup some of the cost if I put my ported stocker on ebay or craigslist. Time to so some research.........
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The exhaust manifold will help some, but you will not see huge drops in EGT's by just replacing the manifold (maybe 50 to 75deg) The chip tends to run a little hot so you would see better drops in EGT's by doing a turbo or the intercooler.
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