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Define your "minimum". Really at low boost 5-6 psi, you dont need to upgrade your injectors and even intercool. Use an FMU and check valves to boost and it will work.
Now the question is, would it be efficient? I say no. Would I do it? Hell no....
How much boost are you planning to run and what HP goals? Are you planning on beefing up your internals?
There are two ways to set-up an AFC to control your fuel under boost.
1) With stock 240cc injectors: you will still need an FMU with 10:1 or 12:1 disc and fine tune your AFC on the (+) side on RPM targets.
2) Use injectors with a minimum of a 400cc rating. I use a set of DSM 450cc's. Set the AFC on the (--) side. This will control the voltage input of the stock MAP sensor to the ECU, making the ECU think that the car is not boosted and allow fuel compensation through the stock ECU. This is the notorious AFC "hack".
Goodluck. Please use the search button here. I have made several posts on these types of question. Use this thread if you need clarification. I just really have no time to explain all these crap in detail. My website can also guide you to have a decent boosted D16.
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