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Injector size??

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Old 11-19-2014, 09:46 AM
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Default Injector size??

I have been back and forth on what size injectors to get for my setup I have a stock Lq9 with a 222/224 .566 .568 112LSA cam with 74mm front mount turbo with stock intake with 91 gas, my normal boost will be 8psi -12psi max?
Old 11-19-2014, 10:52 AM
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60s should be just fine and are simple to tune, but might be a little close depending on fuel pump and pressure. 72s if you don't mind spending a little more. I wouldn't go much higher than that unless you have an excellent live tune. The 80+ Injectors have a tendency to need a little more fine tuning.
Old 11-19-2014, 12:31 PM
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Originally Posted by gamble686
60s should be just fine and are simple to tune, but might be a little close depending on fuel pump and pressure. 72s if you don't mind spending a little more. I wouldn't go much higher than that unless you have an excellent live tune. The 80+ Injectors have a tendency to need a little more fine tuning.
I will be running a single walbro 255 or 400 with factory fuel regulator return style
Old 11-20-2014, 08:38 AM
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400 will overpower your stock regulator.
Old 11-20-2014, 02:51 PM
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I have a walbro 450 stock lines with 60lb injectors. On about 15lb with meth and my injectors are maxed out at 1/4 throttle. I would go bigger.
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