Been a while thought I'd update.

The harmonic balancer ended up exploding on the car (car sat for 2 or 3 years outside, I guess it rotted). Got it back together, still ran the same, got the replacement EHA from ebay, which was bad.

Got a replacement EHA from the ebay seller, and put it on the car, ran the same, took it to the store, when the car went into closed loop, it died.

Went home, took the original EHA and removed the set screw, and the insides were all F'ed up.

Took the Ebay EHA that I had on the car that almost killed me the night before, removed the set screw and gave the adjustment 1/4 turn.

Guess what? Car runs like a bat out of hell now.

So to sum it up, my old EHA was totally f'ed. The ebay one I bought was good, just needed some adjustment. All is well now!

Plenty of power and smooth throughout the power band.

Thanks to ps2cho and tinypanzer. You guys were correct!

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91 350SD
14 F150 Eco
19 Fusion Hybrid
11 GT500