if you are going to have a manifold made replace the lower intake manifold... 1slow370's saw great power gains partly due to removing the square runners in the lower intake manifolds. This cleaned up the airflow greatly! It allowed him to have long oversized runners. He picked up double digits in the midrange and up top I believe.
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Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054
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