i keep it around 18psi on pump (91 here in vegas) however, my boost controller sometimes doesnt work and i see 20-22psi....
this is w/out water injection..
p.s. when i spoke with hahn, they told me not to run more than 19-20psi on pump.....
i do see some serious timing retard 5-6 degrees between 3800 and 4500rpms..
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