I've been slowly building my MegaSquirt DIYPNP ECU, just wanted to take my time so I don't screw anything up. I have configured to be run on a standard engine with MAF removed, just so I can learn how to tune the basemap. This means standard narrow-band O2 sensor, stock TPS, etc...
All instructions can be found in the links below:
Build photos after the break =)
For photos of the unboxing, check my previous post here.
I found this to be the hardest part of the build. Heaps of wires that need to be cut to length, stripped and tinned. This pinout will be different for each model of car, pinout can be found on the DIYAutoTune website.