Question to the self-mapper among us: Knock detection?

[MartinS]

Doesn't matter. But was bit focused on the DIY PNP Megasquirt.

Actually I'm not convinced about the ECU or about the ECUs on the market. Wiring isn't a problem, acutally. I've done wiring from scratch and i've got experience with electrical shit. BUT the big thing is, if you compare to the 200SX comunity you can ditch the original ecu with a nistune board, and still have the abilities you have with the original ecu, like check engine light, and a lot of fail safe things! Fact is car manufacturers invest millions in reliability and with nistune or ECUTEK you can retune a factory ecu, wheras a standalone doesn't incorporate these things as they are made for "race purpose only".

What can you recommend?