What to do...

yellow rose said

With it locked out there is a great probability the ignition retards with RPM. At that DA, I doubt retard is a good thing.

And they ALL retard. How much and at what RPM has to be tested. But they all do it.

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I did rev it up to about 4000 or so and it stayed rock steady with the timing light.. but thats not to say that it doesn't do it higher up, or act differently while the car is loaded. But I did notice with the advance installed it was kinda steady (little bouncy).