Wouldn't 100psi indicate that? Even if you don't see the actual max pressure, you would see it peg 100 for a period of time then you would see it drop below 100.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |