ATS Exhaust Manifold for 2005

[JCushman]

I have heard from many people that the stock exhaust manifold is very restricitve, especially in the 5 and 6 cylinders. Many of these same people have recommended the ATS exhaust manifold. Does anyone have any remarks about the ATS exhaust manifold, and is it necessary or beneficial to replace the stock exhaust manifold? (I hear it is quite time conssuming to switch)

 

[CRiggan]

When I purchased my turbo from Brady at Industrial Injection, He advised me to install the ATS exhaust manifold along with my turbo to improve exhaust flow to the turbo. From what you stated in your post, that is the same reason I decided to go ahead with the ats manifold. Plus it looks really cool with that ATS badge on it.

 

[Bob4x4]

I have heard from many people that the stock exhaust manifold is very restricitve, especially in the 5 and 6 cylinders. Many of these same people have recommended the ATS exhaust manifold. Does anyone have any remarks about the ATS exhaust manifold, and is it necessary or beneficial to replace the stock exhaust manifold? (I hear it is quite time conssuming to switch)

The 3rd gen manifold is probably the easiest to replace of all models,the turbo does not have to be moved at all. I have noticed improvement on bone stock trucks, albeit slight.



Bob

 

[JBee]

I replaced mine on my '06 3500 w/6000 miles on it, for the simple fact it had a pre-tapped pyro port as well as the benefits of better flow and heat absorbtion since I heavy tow. Now it was time consuming to install for the fact the two bolts on the flange to the turbo exhaust flange requires a thin walled open/closed end wrench and some serious torque. I actually removed the exhaust port to the turbo and removed the entire unit to better access these bolts (one topside/other bottom). Another annoying discovery is the very back stud had a oil or coolant line that has a welded bracket that attaches to this stud so it would require you to remove this portion of line which branches off in two directions further disturbing fluid seals. I opt'd to cut the bracket and then join it back together with a piece of metal joining them back together. Maybe I did it the hard way...

 

[Bob4x4]

Once you have done a few they get very easy



Bob

 

[Diesel Nut]

Its not too bad at all. If you are going to do the turbo then definently do the manifold.

 

[JBee]

Once you have done a few they get very easy



Bob

How'd you deal with the antifreeze or oil line that they mount to the last rear manifold bolt?