[ADiCarlo]

Hey All:

I'm starting to piece together my intake manifold for my motor. I have LS3 heads so I'm running the factory LS3 manifold.

When doing some research I found 3 options, factory LS3 injectors, the Fast series (which appear to be the same lbs as the factory ones), and a set of Siemens injectors that will work but are 85 lbs.

Has anyone maxed out there factory injectors on a NA motor or found limitations during tuning due to the factory set up.

I would think that the 85lbs injectors would be beneficial when running boost which I might down the line but would this be overkill on a factory set up.

Just trying to wrap my head around the needs of a performance LS.