Sputtering engine

[C.Fuller305]

i have a 1994 ford ranger 4.0 5 speed. When I idle and go at low speeds the truck runs perfectly fine however when I get up to 60 or more the truck starts sputtering like it’s misfiring.
I recently rewired the MAF sensor because of issues. My fuel filter is about 6 months old my spark plugs are about 6 months old and my wires are about three weeks old ( I accidentally broke a wire and had to replace them) it has one injector replaced fuel pressure regulator, IAC, TPS, air filter. If anyone has any idea please let me know

 

[Uncle Gump]

Sounds like it may be running lean at cruise speeds.

Have you checked your fuel pressure?

 

[osujason]

Is the PCV valve functioning properly?