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I am piecing together bits for my setup and want some opinions on injector size. I have a na6 with MSPNP, will be using a fairly small t25 from a R34 GTR, and am hoping to make in the low 200rwhp bracket with around 12psi.

I already have a set of rx7 440s(199500-2010) which I have had cleaned and tested but not yet installed. I origionally went the 440s as I wanted to retain better resolution down low.

I have done the calcs and it looks like they should be around the right size for my expectations but I wanted to hear from some of you about it, as I don't know how accurately the figures apply in real life.

I do also have cams and am seeing over 90% dc out of the stock 230s N/A so this has me thinking maybe I should go for some 550s from the beginning to leave some headroom? Opinions?

Cheers, Tim

turbobluemiata

iTrader: (8)

headroom never hurts but cheaper to use what you got if you already have 440's cleaned throw em in I think

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Anyone else using the rx7 440s? Any more opinions to share?

Joe Perez

iTrader: (8)

I'm using a set of Bosch 465s, virtually the same as your 440s. I don't have a HP number, but on my intercooled, Greddy-based system (TD04H-15G turbo) running typically 12-13 PSI, the highest I've ever seen them go is ~80%. IOW, they seem to be ideally suited for this particular application.