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Back on topic, Pulstar Plugs incorporates a Peaking Cap into their plugs for a much more intense spark from the same coil. Brisk offers Multi-Spark plugs in a different package than Hyundai.

MegaSquirt started out as a college thesis project in 1996. By 2001 Bowling & Grippo worked out the majority of the bugs -- MS2. It has evolved over the past 20 years, so it is a mature technology. Reliability falls in your court. The MS2 can be purchased pre-assembled, or as a kit. If you...

You could probably use the MegaSquirt MS2 or MS3. Inexpensive, just don't need the fuel control. In addition, you could use the spare I/O's to run an electric cooling fan or something else cool.

I'd replace every single fusible link with an appropriately sized fuse. Fusible links are slow-blow. Just be sure to use fuses that are also slow-blow.

The only thing that comes to mind as common to both turn signal sides is the turn signal switch in the steering column. Remove both front LED bulbs. Install only 1 normal bulb. Check for voltage at the other socket with a digital VOM. I'm thinking the voltage is there with normal bulbs, but...

A few posts requested more technical information on what this thread is all about. Here is my attempt at shedding some light. The concept stems from Ohm's Law where V=I/R; V=Volts, I=Current, and R=Resistance. Shunts are highly accurate small value resistors, often <1 Ohm in resistance...

I discovered that analog VOMs are almost always low impedance. Tried reading an O2 sensor on my '73 RR and it kept reading 0 volts. Tried using a digital VOM and got the correct output voltage. I have an old analog sweep VOM I haven't used in years. Kept it around for testing TPS sensors.

About a decade ago a buddy turned me on to Pulstar Plugs. They're a bit pricey, but that's all I've run ever since. They keep the #1 cylinder on my 4.0 Jeep GC from oil fouling (no other plug survives cylinder #1).

Those leads are too close to the metallic heat sink for comfort. It seems too easy to bump the dang thing & short out the MOSFET. [Edit] Just noticed plastic protectors on the leads. Oops!

Just read through the post. Transistors were as good as it got back in the 1970's. I designed a small engine ignition controller about a year and a half ago using an IGBT instead of transistor. In fact, it (GB14C40L) is specifically designed to drive ignition coils. The ballast resistor...