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Old Today, 05:39 PM   #29
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Originally Posted by NoHaveMSG View Post
Hood ducts make a big difference in under hood, coolant and oil temps. Even with a non catted header. I am running uncatted with a ceramic coated header and noticed about 10F difference in oil temp in a 20min track session.

This is the interior of GRMN boot: do you think the vents are still so effective?
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Old Today, 05:44 PM   #30
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Originally Posted by gpvecchi View Post

This is the interior of GRMN boot: do you think the vents are still so effective?
Those don't look that effective, but my experience is not with the GRMN car. My hood duct, along with many other aftermarket solutions work pretty well.
"Experience is the hardest kind of teacher. It gives you the test first and the lesson afterward." -Oscar Wilde.
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