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I've got an 07 f250 and looking to swap injectors to either 155/30 or 175/30. My question is what difference does it make having the stock output or 30% at either size injector. Im also getting a kc stage 2 turbo (hence the reason for injector upgrade). Which upgrade will benefit me more for all around power. I understand the bigger numbers means more fuel but how much of that is wasted out the exhaust when you accelerate?
 

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I've got an 07 f250 and looking to swap injectors to either 155/30 or 175/30. My question is what difference does it make having the stock output or 30% at either size injector. Im also getting a kc stage 2 turbo (hence the reason for injector upgrade). Which upgrade will benefit me more for all around power. I understand the bigger numbers means more fuel but how much of that is wasted out the exhaust when you accelerate?
If you go with the 175 which you should. Why spend the money if you aren't going to gain much. The bigger the nozzle the more bottom end you will lose. I am going to build my tow rig and I am going with 175/30 but I am going to use the KC 1.5 turbo. I need the bottom end torque.
 

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In short, the nozzle changes how fast you can "empty" the injector.


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