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Discussion Starter #1
I dont know what is going on.. I have and 03 is 300 with 5,000 miles on it and it seems to be running slow as hell..i guess since summer started its been acting like this...i filled up mobile gas one time but chev 91 the rest? is this happening to anyone else?help!!!!!!it doesnt have its normal kick
 

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i was in vegas at 115 degrees and my is300 felt just fine actually.. although, it did feel better once i got back to los angeles and it was around 90 outside..
 

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Discussion Starter #9
No..actually it was the heat.. today around night when it was around 75 my car ran great
 

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yup its the heat...115 today...then it started gettin cloudy and windy now its 75-80 and the car actually felt good
 

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The humidity really hurts the performance of our cars...especially turbo cars.
 

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Wino_II said:
The humidity really hurts the performance of our cars...especially turbo cars.
Actually you make more horsepower in humid air. Humid air is more dense, and therefore creates better combustion.
 

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HoustonLex said:
Wino_II said:
The humidity really hurts the performance of our cars...especially turbo cars.
Actually you make more horsepower in humid air. Humid air is more dense, and therefore creates better combustion.
Have proof of this?
 

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heheh

coming from a turbo car to a NA, you'll see lots of people that are still newbie...humid air = more power? hahahah I just thought that was pretty funny!
 

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As it gets hotter, the ECU will retard timing to prevent pinging, so your car will be less responsive. The effect would be similar to running lower octane gas. Sometimes a car will run better with a lower temperature thermostat, hence funning a little "cooler".
 

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well i have the problem of being way up high in elevation and in 100+ degrees of heat everyday. i go to the track rarely but more or less for practice. my 1/4 mile numbers are shitty right now but i will soon be getting them lower hopefully with the temperature getting lower and plus i am going in for retuning of my SAFC. the shop i did it at didn't tune it right. running too rich i believe.
 
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