Building my own system ?'s

[a73formula]

I was looking at making my own system for my pontiac and am going with my intake I already have. I found a 105mm plenum that will bolt up to the 4500 flange and then run a lsx style throttle body. So my main question is about what operating system I should be looking for to run the setup. I need something for around 750 hp.

thanks

[Ollie8974]

Have You looked at MegaSquirt?

http://www.msefi.com/index.php

http://www.megamanual.com/index.html