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Estimating Power Increase Due To Boost and Needed Water

Old 04-04-13, 03:03 PM
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Estimating Power Increase Due To Boost and Needed Water

A few years ago Howard recommended 325 cc/m WI for 400 whp but gave no % of water to fuel. My calculation for my stock port GT35R at 16 psi based fuel mass came to 322 cc/m WI at 20% of fuel.

I am in the process of bumping my pressure to 18 psi. My estimate is that this will give about 425 whp. Thus is 345 cc/m WI good?
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Old 04-04-13, 04:09 PM
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When i was going Single last year Howard recommended me 400/500cc water for 450-500whp.

I think for 425whp you should at least up it to 400cc/m to be on the safe side.
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Old 04-04-13, 08:28 PM
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Old 04-04-13, 11:19 PM
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Originally Posted by rxspeed7 View Post
Their calculation is not valid for my setup.
(1) Their calculation determines the maximum water flow you need if you max out the fuel injectors based on a fixed % of water vs. fuel flow.
(2) Then you would need a system that flows water at that % based on injector duty cycle change as you boost.
(3) I have a AEM system, not Aquamist.

But it might help someone.
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Old 04-06-13, 07:39 PM
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I just estimated what the new fuel would be and calculated from there.
I just wanted another educated reply.

Someone put this thread to bed.
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