hi i have installed today 04.5 downpipe with elbow.

 

Looks good. Nice truck and pictures.
Thanks for sharing.

 

Nice looking.I put a Banks 4 incher on mine when it was new.I like that exhaust manifold!

 

I have been considering this. How are the results? I read some others that did it and didn't sound as if it was worth it. What did you gain? Where did you get the parts and how much?

 

The steep drop in back pressure should give you quite a performance boost going from 3.5 to 4" at the elbow. What's it like now?
Mike
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I put a 05 or 06 elbow on mine and ordered a 5'' downpipe from Grand Rock.I learned that if you go with a 4'' down pipe stick with that 4'' pipe all they way back or up in some cases. I used a 4'' down pipe and a 5'' exhaust the noise was nerve rackin. The 5'' down pipe and 5'' exhaust sounds sweet I think

 

Who sells 4" elbows/downpipes?

If I were to go w/ an aftermarket exhaust it would still come w/ a 3.5" setup out of the box?

 

It would if you ordered it for your 03. If you get an elbow off an 04.5 or newer then you just order an exhaust for a newer truck too. Then you will have a true 4" exhaust.
I had a Banks 4" downpipe into a 4" exhaust on my 03. I didn't notice any power gains but my egts dropped a full 100 degrees on a hard pull. I'd say it's worth it. I did get a little drone after the DP install.....

 

hi

the sound if little quiter.
i have buy by my dealer in switzerland.

the elbow was used i have change to exhaust brake and my dealer have sell my this elbow.

the pyro temp going down

chris

 

Thanks for the info.

So a 4" DP has the same size diameter as my 3.5" that connects to the turbo flange?

Mine is just a .5" thinner.

 

Im doing the same thing you are, and let me see if I have this correct. If you get a 4" elbow, the 4" pipe will bolt right to it. Our '03-'04 elbow is 4" at the turbo, and necks down to 3.5" at the downpipe. A 4" DP wont bolt to the 3.5" elbow. The turbo outlets should both be 4".

Does this make ANY sense??

 

Ya it does. The only thing that will Not match at lest it didn't on mine was the dow pins are diff I just pulled the bttom one out and let the new clamp line everything up.O ya Dodge will have a hard time gitting the right clamp manly cuz the clamp doesnt show up in there system 4''

 

i have done the same mod made my own down pipe its worth it but the heat difference really isnt that much