Need Rb25det Help, Limp Mode Maybe.

[RB30 Ceffy]

Hey guys. Ive been out of the shop for a bit and never got the chance to finish this project. I got the S2 RB25DET running in my ceffy and she starts up fine and everything is high and dry but when I take it for a drive she feels laggy and gutless. About a year or 2 back I built a NEO6 Silvia with GT2535 and mani and TB ect and never wired in the Q45 TPS at first and it drove the exact same as this RB25, once I wired in the throttle body she haulled ass!! My engine in the ceffy feels exactly like that Silvia did with the TPS not hooked up. Is like the computor wont let it do what it should. Since the engine is in my ceffy I dont have a port to do a diagnostic check so I was wondering if you guys have any tips before I saulder a port in to help me save some time. I figured the car is in a limp mode so to speak and couldnt be too many problems as you give the ecu 12V and VROOM, pretty much. Anyways. Any help would be great.

P.S. Vaccume lines, I/C pipes maf are all hooked up correctly and not leaking so its not justone of those simple noobe things to quick fix

Thanks in advance!

[RB30 Ceffy]

ohhh forgot to mention. Ive been a bit busy and didnt have time to run the trans harness. So there is no speed sensor. Would this make it not run right for the 25?? Ive ran sr's with only nutral and reverse switches on the trans with no problems ever. I also only have my tacho and fuel pump hooked up. I havnt got the chance to do the rest of the gauges. But didnt think that would have ANYTHING to do with nothing. Just figured id mention this incase thats a no go.