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  1. S

    Tacho signal - what does it expect?

    Morning, I'm wrapping up a Speeduino conversion on my 86.5 turbo manual, and the only thing left to get working on the factory dashboard (that I care about) is the tacho. I stupidly forgot to scope the tacho input signal when I had it on the factory EMS, and so here we are. I've been doing my...
  2. S

    Cylinder head valley plug question

    Afternoon, I'm in the process of swapping the ignition system over to 2NZ coil-on-plugs, however figuring out a way to attach said plate to the head is proving a challenge. I don't want to use the valve cover bolts ideally, and I have found that out of the four hex threaded plugs in the valley...