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are my injectors big enough?

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are my injectors big enough?

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Mar 18, 2009 | 06:33 AM

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are my injectors big enough?

car is 2001 z06 with the following mods: livernois stg2 heads, vrx5 cam 236/238 .601/.605 113 LSA, LT headers, ported fast 92mm.

car has stock fuel pump with 30# svo injectors right now. do i need to upgrade before my tune?

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Mar 18, 2009 | 06:53 AM

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Should be okay. The tuner can tell you what the duty cycle is on the injectors

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Mar 18, 2009 | 07:08 AM

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According to the "calculations" the 30# SVO's @ 43.5 psi would be 34.6# @ 58 psi, and 34.6 psi is enough to support 440-450 flywheel horsepower at an 80% duty cycle. Maybe that helps a little bit.

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Mar 18, 2009 | 07:58 AM

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If it were me I would go one step bigger and get the SVO 42# green tops.

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Mar 18, 2009 | 09:06 AM

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If that was my car, i would get the ford green top 42# injectors.

Just to give you an idea. My car CAM ONLY with stock H/I made 415/378 and my injectors are at 98% duty cycle

So in April/May i am putting in my 42's and getting the car retuned

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