the calculator is in the thread before my last one scroll up and click the link...nevermind here.
http://robrobinette.com/et.htmruss, its all a numbers game.. i havent dynoed the car with the 14b turbo on it yet.. but this motor with the vj11-14 hybrid made 185hp on 18psi (or 4.72 hp per psi..) thats with a turbo with a flowrate of 280cfm the 14b makes 405cfm @15psi and is efficient to 22psi..
also you need to look at how much air you can in turn get rid of..
the 14 exhaust housing is 2 inches. meaning all of you exhaust must pass through a 2in hole no matter how big your downpipe is, your only going to flow what the 2 inch hole will allow..
now the 14bs tdo5 exhaust wheel is 2.5 inch. same as my downpipe and exhaust.. so the exhaust housing restriction is gone, the throttle body will not allow the flow to truely use a 2.5 in turbine housing.. also by dumping my wastegate to atmosphere is 10-15 hp alone (hence why you run an externally gated setup to make big power)
you can tune your flow when the wastegate opens by using say a 38mm WG vs a 34mm WG...
on the 2.0 4g63 mitsu the 14b is good for 300hp
@21psi (the engines head flows more air)
our engine is a 1.6 id say 220 @18psi is conservative..
ok lets do it this way, the na makes 100hp..
each psi of boost is about 7hp...
18x7=126 so at 7hp per psi of boost (rather conservative for a 400cfm turbo) thats 226hp
not to mention im venting to atmosphere and gaining that flow up top when the WG opens..
ok the na makes 100 hp and the turbo makes 132
take the 32 divide by 8psi (stock boost) thats 4hp per psi with a stock vj14 turbo and a 7.9-1 compression ratio..
now add an efficient fmic, hardpipes, 125 more cfm and bump the compression to 9-1....yea id say 7hp per lb of boost is a safe # to go with.
226 conservatively...
now if you really want to get nasty ive been known to pull my wastegate hose from my actuator and run it at 23psi on the throttle.. not good for it. but i have plenty of fuel so its not going to go lean on me...
oh and 23x7=161 thats 261hp at 23psi by using that conservative 7hp per psi #...