HUGE HP Loss from Air Filter? Procharged LS / Back to back Dyno Test!

This is a back to back test of a 900 RWHP Procharged LS engine. Air filter v/s no air filter! How much power do you think it killed? Results are crazy!

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Видео HUGE HP Loss from Air Filter? Procharged LS / Back to back Dyno Test! канала Turbo John