Old 08-24-2020, 05:01 AM
  #8  
floffshore
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Join Date: Apr 2009
Location: Fort Lauderdale, FL
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My Cummins truck peaks at about 37psi ... i think ~40psi is normal peak boost for a cummins, imho (at least a little above stock/normal, i do have a mild tune on my truck, nothing crazy)