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Posted

Apps are the same no matter what, Injectors for SO engines are the same and are in rigs with autos and 5 speeds, Injectors in HO engines are different and are in 6 speed rigs only.

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Posted

They require a lot higher pop pressure which the HO pump produces versus the SO pump. The SO pump is lower pressure but can pump a higher volume of fuel. The HO pump produces higher pressure and has less volume and also has more timing advance than an SO pump.

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