the question is not weather you have had problems with the engine, its what the act temperatures are.
Excessive act temperatures can help detonation.

The Pace may have been reasonable a few years back, but tuning has moved on but the pace has not. The amount of power being obtained from the CVH was unimaginable 10 years ago.
The fact of the matter is that if you run over 20 psi like myself the pace is not up to the job and you will get high ACT temperatures.

There are now better performing products available imho.