Good call Ben830. The shop did some data logging while on the rollers and found that the fuel pressure is falling and then suddenly recovering and then falling again. They are going to test my JMS fuel pump booster to see if it is failing. The thought being that the pressure would not recover if pump was burning out and the spikes in voltage would be more cause by it failing to boost and then recovering suddenly. If this booster is failing, this will be my second JMS fuel pump booster failure. Innocent until proven guilty but my anger is growing.