Functionally, the MSPnP is very similar to a regular DIY 3.0 MS1.
Both use the MS1 CPU. The PnP ships with the same MSnS-Extra code that most of us use, and is capable of running Hi-Rez code. The PnP, as Matt points out, is based on the rev 3.57 PCA, which is functionally similar to the rev 3.0 board; the differences between the two are principally to reduce parts count and accommodate automated surface-mount assembly.
In the PnP, the functions that we typically build up in the proto area pr
with wires on the backside (second trigger input, spark output drivers, EBC, A/C, etc) are contained on the daughterboard which houses the stock ECU connector.
The big difference, frankly, is exactly what it appears to be. With the PnP, you don't have to build it, do any mods, or do any wiring.
Originally Posted by JustinHoMi
the DIYPnP has more potential than the standard MS-I or MSPnP.
Yep. The big difference here is that the new unit is based upon the MicroSquirt Module, which is basically an MS2 CPU on a fancy daughterboard. So it has all the advantages of a regular MS2, such as enhanced injector resolution, and the ability to run fully sequential. With the DIYPnP, some mods are still required, of course, though it has the advantage of being plug-n-play from the car's standpoint once it's all built.