The test was done back to back on the same day with all variables staying consistent through both tests.
Ls6 intake vs sheet metal intake.
The engine was run both naturally aspirated and under boost with both intake manifolds.
In this video it is an intake manifold shootout between the factory ls6 long runner intake and an aftermarket short runner sheetmetal intake.
Tpis modified ls 6 intake the intakes were tested on a mild built streetable 412 cid ls2 with our tpis 1 3 4 headers and tpis calibration.
Compared to the ls1 the ls6 offered an additional 22.