Scanning a tbss with a 408 and 2.3 ltr supercharger. Idles around 60 kpa. I notice it was getting lean starting around 3000 rpm if I held it steady and kpa was down in the 40s even dipped into the 30s. Never messed with a supercharger and not sure what's going on that could be causing it. Somebody educate me please.
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