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Old June 2nd, 2015, 11:16 AM   #1
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Cold vs Hot temp performance

So, I live out here in southern AZ (go wildcats).

Let me start out by saying this place, for anyone who doesn't know, is hot as ****. I have a black accord, if I touch it I get a burn. I know that higher temperatures cause a loss of performance, but what I don't know is how much performance. I can feel a huge difference in the car as far as output, in the winter it's much quicker. If anyone has some insight that'd be amazing! What would the difference in power be between 30F & 100F? Also, you can assume the humidity is near zero.
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Old June 2nd, 2015, 01:36 PM   #2
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I live in FL, so we have more humidity. You have more of a dry heat. I feel the same thing. For my car, maybe 10-20whp
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Old June 2nd, 2015, 06:25 PM   #3
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So i see you felt the first 100 week this year too. I clocked a 140 iat with the iat sensor sitting in the engine bay the other day.(no intake attached)

It takes quite a bit off. Even our nights are hotter than most winter days. Cai doesnt give a **** when the asphalt is 120
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Old June 3rd, 2015, 12:09 PM   #4
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I've also been experiencing weird shifts. I have the 5at, when I go WOT and it downshifts, it lags a bit before it puts the power down. No scratching or any sign of a problem, it's just a second or two maybe while it's already at the downshifted RPMS before it puts down the power. It's kinda like... I downshift and I have two seconds of turbo lag. Can this somehow be related to the heat? Would a ATF flush help any? (overdue anyway).
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Old June 3rd, 2015, 07:16 PM   #5
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Do the flush. I doubt the heat would cause anything that significant.
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Old June 3rd, 2015, 09:24 PM   #6
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I've noticed in hotter weather my shift are more "notchy" then when cooler. I do have a 6mt though
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Old June 3rd, 2015, 09:51 PM   #7
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I noticed the opposite. Below freezing temps adds the notchy feeling. Haven't felt it since I moved to Charlotte.
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