Will there be any problems adding a 5" Diamond Eye exhaust to the '94 7.3L Power Stroke? We have researched to find that the engine is too old for the new emissions requirements such as EGR and DPF. Is there anything else that we are overlooking before changing to a bigger exhaust?

 

5" is going to be VERY tight and a waste.

You only have a 3" outlet out of the turbo and the down pipe is a 3"(all you can fit without cutting and dog housing the firewall.

SO anything bigger than 4"(not to restrict at the bends) is complete waste

I recommend Flo-Pro 4" stainless system

And stay away from MBRP

 

Thank you for your help.

 

Any reason to stay away from mbrp? is it just to stay away for the obs 7.3 or the superduty aswell?

 

It fit like complete crap. I did the typical firewall mod for the DP, bit is LAID on the floor. I also had to remove the passenger crossmember brace and NOT reuse it.. Next was EVERY hanger had to be modified to work. Then the tailpipe hit the rear spring.

I took it off, threw it is the scrap pile and bought the Flow pro stainless kit for LESS money then the MBRP aluminized kit.

I have no clue on SD fitment

 

sounds like we will stay away from them for the 550s then! thanks!

sorry for the highjack OP

 

What do you mean when you say that the 5" will be a very tight fit? The pipe I was looking at has a 3" downpipe to a 5" exhaust . Where would it become a tight fit?

 

Have to agree.Installed MBRP on my 03 6.0 last week and it fits like crap.Mid-pipe is not bent right.Hits on spring shackle and the hangers are a joke.

 

Near the trans crossmember, The driveshaft, axle, bed, fuel tank and spare tire

You have to remember, the truck was designed to have 3" exhaust. And there were clearances made for such. You do away with all the clearance with a 5" exhaust

 

I put the Stainless Steel "Diamond Eye Exhaust" Turbo back 4" on mine. It fit very well and I got it for $320 bucks shipped to my door. Every hanger worked just fine with no mods needed to them. I had to cut to make room for the downpipe and You need to remove the catalytic converter mount( mine was a delete kit) and the rear fuel tank strap needs the excess hang over on it trimmed off. I still need to do this I can hear it rubbing. If I knew I could of cut the muffler unit just a bit to move it forward an inch or so I would of done it also.

Definitely should of done this 5 years ago.