p.s.i. ?

[98-ls]

i was thinking about turbos the other day and i have a question since the turbo piping is connected directly to the intake manifold is there a minimum amount of psi you need to run to get enough air to the engine?

[quick95civic]

no, before the turbo builds boost your engine runs as if it were naturally aspirated. Good quality setups with a intercooler typically drop less than 1 psi through the piping so even though your engine might be seeing 8 psi your turbo might be pushing around 9 psi, either way there isnt much difference.