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Heat index bout 100+ what effects on my FC?

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Old 06-07-08, 02:00 PM
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Heat index bout 100+ what effects on my FC?

Like the title says its about 99+ outside and my car feels likes it's towing a boat. A 36' at that. Just changed the transmission fluids and engine oil. Just don't know if thats normal.
Old 06-07-08, 02:09 PM
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well in the hot humid air you are going to make less power.
Old 06-07-08, 02:10 PM
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ugh im with ya on that one
Old 06-07-08, 02:34 PM
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I understand but my wifes old 89 cabrio didn't do it as bad as the FC.
Old 06-07-08, 02:34 PM
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And I mean VW cabrio
Old 06-07-08, 02:40 PM
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Originally Posted by RotaryPicha
Like the title says its about 99+ outside and my car feels likes it's towing a boat.
The heat index is based on air temperature and relative humidity. The engine will lose about 1% hp for each 10degF increase in air temperature. The engine will also lose a very small amount of hp due to the increased humidity. On the good side, high humidity helps protect against detonation.

Originally Posted by RotaryPicha
Just changed the transmission fluids and engine oil. Just don't know if thats normal.
If your old fluids were broken down and highly thinned out, the car may be a little slower with the new fluids because they are thicker. However, this should only make a slight difference. If you notice severe engine straining, then there may be something else wrong with the car.
Old 06-07-08, 07:00 PM
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everything will be okay

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Originally Posted by Evil Aviator
The heat index is based on air temperature and relative humidity. The engine will lose about 1% hp for each 10degF increase in air temperature. The engine will also lose a very small amount of hp due to the increased humidity. On the good side, high humidity helps protect against detonation.


If your old fluids were broken down and highly thinned out, the car may be a little slower with the new fluids because they are thicker. However, this should only make a slight difference. If you notice severe engine straining, then there may be something else wrong with the car.
ah, very good sir. beat me to it!

same reason that old carburetored cars made WAY more power when it was cold outside
Old 06-13-08, 04:23 PM
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Found out from Zak it was the cat converter causing to much back flow, replacing them with new exhaust from headers back, thanks guys.
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