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Old 08-11-2012, 08:16 PM   #3
Scooby Specialist
Member#: 238618
Join Date: Feb 2010
Location: 11.82 on vf52 w street tires
2011 WRX
613whp fp black


But then your keeping in tons of heat thus raising intake least with the grill the heat escapes. If removing the grill doesn't effect aerodynamics I think you would only gain hp with cooler temps. After heatsoaking at a light for one minute I have seen my intake temps that are usually 15-20 degrees warmer for example. Its 70 outside. My intake temp is 85-90 crusing. It could go to 120-130 at a light. Even 150 after 3 minutes. It would then take 3-5 mins to cool back down to 85-90 once cruising at 40-55mph. With the grill off, you will increase air flow and release heat 50% faster possibly cutting the time in half. Less knock more timing(hp) I will run a test on this when my engine is back together. I think a hood with several grills or holes would run faster than a hood scoop delete/block off or impreza hood
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