DP= downpipe, it's the primary exahust tubing right off the turbo. The exahust leaves the engine through the manifold, passes through the turbo, then onto the exahust piping, which starts off with the downpipe. From there it goes to a TP, testpipe. Basically just a straight pipe replacing my cat. From there a catbackk takes it all the way back to the muffler
SFP (South Florida Performance) is the name of a local shop here in Miami which is highly regarded for building/tuning turbo Honda's.
The "P28" is the Honda ECU code for the ECU i'm going to be usuing. The P28 ECU was used in the 1992-1995 D16Z6 SOHC VTEC Civic's. This ECU uses an OBD-I based system, OBD-I systems use a ROM-chip which is rewritable, as opposed to newer OBD-II ECU's which can only use the original ROM whch cannot be rewritten. Hondata is a company which basically took stanard Honda OBD-I ECU's and added lots and lots of parameters and features to them, making them interactive with proper tuning equipment allowing you to make changes to the car's ECU settings. Hence these are tunable ECU's, also known as standalone systems.
Hope I got it all