You can not interchange chips from diffrent ECU'S there isn't actually alot between the L1 and L6 series, the electronics are different hence why different chips won't work, I presume you brought it second hand as if you brought it new you would have instructions.
Gunship uses standard components, injectors etc but allows you to run 22PSI between 2500 to 5000RPM, tailing off to 17PSi at 6000RPM and then finally 14PSI at the 7000RPM limiter.
You will require a -31 actuator and some decent plugs and gapped correctly, I am not sure if the fuel pressure should be adjusted etc.
It is also reccomended a 360 degree thrust bearing to be fitted.
L6 should go straight into 3DR but personally I would just get the correct chip for the ECU if it isn't, it's easier and will save you money!
Martin