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01-13-2018, 12:46 PM
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#29 |
 Drives: Acura RSX-S, 1966 Chevelle SS Join Date: Apr 2014
Location: Boulder, CO
Posts: 2
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Don't confuse boost pressure with airflow. You can have 20 PSI of "boost" blowing into a closed pipe and have zero airflow. What makes more HP is more airflow and the additional fuel to match. A bigger cam usually reduces measured boost because it reduces airflow *restrictions* through the engine. Log the MAF readings before and after changing pulleys. It's possible to put on a smaller s/c pulley, see more boost, but very little increase in airflow because the E-Force port runners/heads/cam/exhaust/ may already be maxed out.
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