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Is there any advantage in upgrading the bov. If all I wanted was noise I would vent the original to Atmospere. Is there any power gains??
 

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There will be no power gain. In fact, another other BOV beside the OEM one will get rough idling and/or stalling.
 

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400whp club here I come!!
HT MR2 Turbo
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Even blowing your stock BOV into the atmosphere will screw up your performance. Your car will inject extra fuel and not have any returning air to match it. Your A/F ratios will get all screwed up. It's best to just stay stock. Plus... you get better gas mileage.
 
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