HFS-4 Q&A, application for your engine...

[makro86]

Not any more power then what I will have after the install of the HFS-4 and subsequent dyno tune + 25psi. Unlikely anyway.

Before WMI, I was tuned on 21.5psi producing roughly 480hp.

I am assuming that after the addition of WMI and 25psi, I will be at the limits of my setup and don't plan on pushing it any further.

So based on all this, 1.2mm should be sufficient with a 0.7 restrictor based on the above?

Cheers