[peanutpope]

In Europe:

SR20Di 116ps - (1990-1993) TBI, intake cam set for more torque at lower RPM
SR20DE - MultiPoint fuel injection, comes in two versions:
High-port 143 ps (1990-1995)
Low-port 150ps (1996-)
the difference being that the high-port has a stronger lower end of the engine and the throttle body is beneath the injectors, whereas the low-port version has its throttle body above the injectors.

SR20De 125 ps (1993-1996)/130 ps (1996-) - different from SR20DE at the cams, ECU and exhaust manifold. (all slightly less aggressive)

I hope this explains it...