yes you could...
about the haltech, i unloaded it a while back because i couldnt get it to run right in the cold. Also, the stock msp ecu seemed to be fine, and it was up until 11 psi where the afrs were right at 12.0 .
i have since installed an extra injector setup, and have tuned the fuel for 13 psi-14 psi about. The maf sensor is maxxing out even with the fcd, so i think it is time for emanage and z32 maf..
-B