I posted this on preludeonline.com and they said to bring it here cuz there were more turbo guys. My question is, would the stock injectors on an h22a1 be able to handle 7 or 8 psi of boost using an inline fuel pump (not sure of the fuel characteristics, although I was told it can support upwards of 300+ hp) and a rising rate fuel pressure regulator with a rate of 12:1? I will be retaining a lot of stock parts and I was told that with a rising rate like this it may be too high. If it is in fact too high, would an 8:1 be a better bet?

 

You can run a 12:1 on the stock lude injectors. You can even go 10:1 if you use an inline fuel pump. But the injectors are good for 7-8 psi with no problems.