old mate of mine had this problem when we put a 25 into his s14, would just rev up then bog down/ pop/ lose power.. definitely was NOT LIMITER..
We tried another r33 ecu which we knew worked properly, and in the s14 the problem was still there.
he had the loom checked and was all ok, so only thing that never got checked was sensors on the engine
still has the problem now, keen to know if u find out the cause..