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After taking the car on a trip and hearing a LOT of pinging on acceleration, I decided to check the timing. It was WAY too far advanced (like near 30 degrees). I dialed it back to 15 and took it for a drive. The pinging was gone. I still need to do some data logging, but the car drives very nice now.

So I took a little time tonight and installed the idle air control valve. It's getting crowded on top of the intake manifold now. On the bright side, I don't have to pull up on the choke handle to let extra air through at cold idle.

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