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Old 08-12-2012, 07:40 PM   #7
wrxdrvr
Scooby Specialist
 
Member#: 79222
Join Date: Jan 2005
Chapter/Region: W. Canada
Location: Canada BC
Vehicle:
'09 STi 297.5 WHP
Blue

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Quote:
Originally Posted by djc1827 View Post
But then your keeping in tons of heat thus raising intake temps...at 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
He has a FMIC...

Quote:
Originally Posted by djc1827 View Post
So it would only help me by taking off the hood scoop grill then? Exactly what I thought, heat would leave the engine bay easier. I was even thinking about manually wiring up the fan to run on a toggle switch like I did on my talon or seeing if someone would make me a custom carbon fiber hood with many holes and grills so I would never heat soak while stopped in traffic. I am using a turbo blanket and I am also have my fmic and pipes coated this time. I am still running cobb short ram intake tho
You have a FMIC... Thus no real heat-soak like a TMIC... As for the scoop you would be better off without a scoop or a blocked off scoop (with the grill) like you have now.. As for the holes in the hood (vents) you need them in the front part of the hood, like mine for the best results in "sucking" out the hot under hood air and allowing in more cold air through the FMIC and radiator... http://s18.photobucket.com/albums/b1...t=IMG_0595.jpg
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