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4.6L Vortech injector size?

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Old 08-31-2014, 03:06 PM   #1
Join Date: Mar 2014
Vehicle: 2010 Ford Mustang GT 'vert
Location: SC
Posts: 12
Default 4.6L Vortech injector size?

I recently bought a 2010 GT that already has a Vortech V3Si and hot rod cams (Comp Camps ***** Thumpr). I know this is an "odd" combination, but it sounds great and has good power, so I'm reluctant to give up either one right now.

I want to get a new tune, and am wondering if the 39#/s injectors are enough for this setup. It seems to have a custom tune already, but the rev limit was set pretty low (5800 RPM). Most calculators show max horsepower from these injectors should be about 500, which might be close to what it's now running. So the low rev limit might have been set because of fuel limits.

Anyone have any experience with a similar setup, especially with 47#/s injectors? Thinking about getting a set of those for the new tune.
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