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Would I really notice a difference?
I have a cold air intake and cat delete, stock turbo/housing and injectors.
Now I'm preparing to purchase a dp but in lieu of buying a complete 4" exhaust do I really need to buy a 3" to 4" dp to maximize my moderate mods or will I be ok with 3"?
I will be upgrading to a TW prog in the future but I don't see much beyond that.
97 F250 PSD ext cab 4x4
75 F250 Camper Special nicely massaged 390/Auto