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16-18psi? I found Mike K. at 19 psi with 495 rwhp, 490 rwtq, and Bernie at 17 psi with 414 rwhp, ~410 rwtq. A customer just emailed me his PE1820 results at 16 psi, 455 rwhp, 400 rwtq. His boost controller was not working correctly, hence the 16 psi. JDM downpipes and stock manifolds. Boost psi make a big difference for these big turbos, so Bernie's is all that I can really compare to. So anything between 16 and 18 psi.
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