Geek it Up
Now that I've failed emissions twice, there are less than 6 weeks to go, and I'm only boosting to 6 PSI, it's time to make some additional power with little pieces of silicon, carbon, fiberglass, etc.
This week, the MegaSquirt install has begun. Features that are included are knock sense with dynamic ignition retard, launch control, map switching, and boost control. The MS is assembled and the wire harnesses are ready. I've been prepping a few odds and ends on the car to allow a complete installation without modifying the stock harness at all.
Below are a few pics of the components that will be installed into the car. I want to dial in about 10 PSI for auto-x and about 14-15 PSI for drag. According to the compressor maps, I'll be within efficiency limits (yay).
Moving on to a few progress images, the following is the knock sensor controller and harness that I've constructed. It simply filters the "noise" from the knock sensor and outputs a usable signal to the MS. The knock sensor will mount to an existing boss near the oil pressure sender.
This would be the boost control solenoid and harness

.
The third harness bypasses the VAM to allow interconnection of a GM IAT sensor as well as allowing the fuel pump to continue to operate normally [with priming pulse]. The sensor will be mounted just before the throttle body on the charge pipe.
Here you will find the completed MegaSquirt I with Ver 3.0 board. Included is the adaptor harness that connects directly to the OE harness. No cutting, splicing, or tapping of the original harness is required. I used the same set up within the CSP Miata. The connector was lifted from a junkyard ECU.
This is a closeup of the front of the MS board with Miata and application specific modifications.
...and the rear of the board, also with Miata and application specific modifications.
I hope to have this installation completed this week and a bit of tuning completed within the next few weeks. The current timeline also allows for dial-in of the suspension and a bit of paint work. Stay tuned

.