Ever wonder which catch can/breather system is better between a vented style system and a sealed style system? If so what to find out!

Using my 9 second (best ET at the time 9.98@147mph) 2003 EVO 8 running 45 PSI on a Forced Performance Zero Turbo I decided to test a Saikou Michi vent to atmosphere dual catch can system, as well as a Saikou Michi sealed dual catch can system to see which was most efficient on my configuration.

Disclaimer: This is not a one-size-fits-all answer. I realize that with different HP levels, variables, components, configurations the results could be different, but wanted to share my results for my particular configuration at this given time. Use the information as you see fit, and enjoy!

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