I bought this because my car was a bit difficult to start. I replaced my 6AL box with this for a time delay during startup and additional rev limiting features. I just removed the old box and put in the new Pertronix box. I was surprised at how easy the car starts now and how smooth it idles. I didn't realize this would change the quality of downtime, but it's nice that it does. After noticing the improvement, I looked at other reviews and saw that other people had experienced the same thing. Obviously, a fast multiple spark makes a big difference.
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