So I went back to the Squirrel Performance Turbo Calculator and retried their program, I typed in my desired specs, (my specs). (change liters to CID and back to liters if lower data doesn't show) And the best map I saw was the GT2860R-2 or GT2860RS. I know the world will say there is no way I can get 215hp out an Iron Duke. But that's what the program says at 10psi. And 187hp at 7psi. I'm happy with that.
My plans include a real ecm not the OEM calculator the Fiero came with, so I'll have full timing control using one or even two knock sensors, the OEM ecm uses none. The OEM timing curve does not vary, it's set and does not change based on load, if it was programed for 20 degrees it will set the timing at 20 degrees. Where I might only need 15 degrees at the same time with a turbo.
Using the Desktop Dyno 2000 program and entering specs from Amotion Cams, I get a max HP of 144hp at 4500 rpm. Using the old school "turbos ad 45% hp" that gives me 208hp. 144hp will still be fun, but if the stars and planets align 200hp will be even better.
