Induction 201 problem
Just to stir up some fun! Let's see how much we understand turbocharging and airflow.
Johnny is given a choice of modifications to make to his induction system. Each involves an improvement that reduces in pressure (head) loss. The vehicle in question is a MAP sensor governed variable geometry turbocharged LLY Duramax. In each case, intake plenum pressure is governed to the same 34 psia of MAP. Assume sea level.
Option A involves reducing the losses upstream of the compressor. The improvement is a 2 psi reduction in losses. It involves a redesigned intake box and plumbing. The cost is $400
Option B involves reducing the losses downstream of the compressor discharge. The improvement is also a 2 psi reduction. It involves an optimized CAC, new boost tubes, and improved intake riser, at a cost of $1600
1. Which option should Johnny go with, and why?
2. Which option has the best performance improvement, and why?
Vehicle Systems Engineer/Professional Tuner
04.5 GMC 2500HD SRW LLY
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