Looking for MS1 v2.2 modding diagrams - Miata Turbo Forum - Turbo Kitten is watching you test compression.

sicklyscott · **Looking for MS1 v2.2 modding diagrams**

Hi Everyone,

I've been looking for a diagram on how to mod the typical MS1 v2.2 board for use in the Miata, however I keep coming up with v3 boards. Can anyone point me in the right direction?

THanks
Scott

**Joe Perez** · 07-02-2009, 09:56 AM

How to MegaSquirt your Mazda Miata

sicklyscott · 07-02-2009, 10:14 AM

Thanks, can anyone explain to me a bit more about the 420a neon setup?

**Joe Perez** · 07-02-2009, 10:22 AM

This would be the outputs for a 2.2: MSnS Extra Ignition Hardware Manual

***Braineack*** · 07-02-2009, 10:37 AM

excuse my shitty diagram.

Use 100-300ohm resistors for the spark pull up.

For the tach input:470ohm resistor between the front of D9 to the back of D5.
second trigger: 470phm resistor from the spot between r13 and d9 to wherever the tach input is coming in from, then a 1K resistor to pin 11 on the CPU.

I belive that's all you need, make sure you position the transistors correctly on q3-5-9-10-11.

sicklyscott · 07-02-2009, 03:01 PM

Thank you sir, exactly what I was looking for!!!