| 13 psi will not give you 378 rwhp. Especially without an exhaust. Do a little research, altitude correction will "normalize" the HP output of a NA car that dynos at high altitude, but it gives falsely high readings on a turbocharged car. This topic has been beaten to death before. But if you look at the dyno of all the guys who dyno at high altitude, their rating are all out of whack compared to cars with similar mods elsewhere in the country.
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