3 1/2" diamond eye turbo down

[c3ncal559]

I have a 05 6.0 all stock , except magnaflow muffler and k&n intake, I was looking at the diamond eye 3 1/2" turbo down and eliminate the cat , since it comes with it, would the 3 1/2" be worth doing or not? Or go 4" ? Cause from the turbo down all the way to the muffle would be 3 1/2 " and after the muffler it be stock diameter ,I do have a sct tuner.

 

[drunk on diesel]

stock diameter is 3.5"

 

[c3ncal559]

Even from the turbo down? So it be worthless ?

 

[drunk on diesel]

no, OEM downpipe is 3"

 

[c3ncal559]

I see so how much would it help out replacing the turbo down pipe to 3 1/2"?

 

[MaxdLaw]

I would do the 3 1/2 down pipe and then 4 inch from there all the way back.


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[c3ncal559]

Thanks I'm looking into the diamond eye and seen that 3 pcs kit

 

[Strokin89]

I believe I have a 4" downpipe never measured it but def looks bigger than 3 1/2. I'm going with a 5" exhaust on mine tho I really like the deeper tone


2005 F250 6.0 powerstroke, 6 speed manual, egr delete, arp head studs, new oil cooler, aftermarket coolant filter, custom intake, 4" down pipe into dual 6" stacks, 8" lift, TSD super panty dropper tune.

 

[George03f250]

I'm going diamond eye 5" single with a 6" tip I also like the real deep tone

 

[Twan]

4" down pipe to a 5" is the best way to go. It dropped my egts pulling on the flats by about 50* and takes it a bit longer to heat up the egts!!