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I can neither confirm nor deny that the JB4 is in the garage waiting for break in oil change and inspection to be completed this later this week before install.
I will say this about the JB4. They are very octane dependent. Even on 93 they will tend to pull timing when upping the boost without some sort of octane booster or E85 blend. Definitely wouldn't go above map 1 (+3 psi) without adding some juice.
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