Title: does your car run better in the rain?
Post by: macanic on June 09, 2009, 06:40:56 PM
does anyone car run better is the rain or when it is humid, because my car runs so much better in the rain, i get better throdle response, it picks up faster. i dont know why it does it.
Title: Re: does your car run better in the rain?
Post by: slipkord on June 09, 2009, 07:50:18 PM
Hot air bad
Cold air good
nuff said
Cold air good
nuff said
Title: Re: does your car run better in the rain?
Post by: macanic on June 09, 2009, 10:01:20 PM
good point. but even when it is humid it runs like that. it not a bad thing just wondering if anyone elses car does this
Title: Re: does your car run better in the rain?
Post by: InFuMoUs on June 09, 2009, 10:12:39 PM
Majority will say yes they notice a difference, but Jeremy pretty much summed it up for ya.
Title: Re: does your car run better in the rain?
Post by: macanic on June 09, 2009, 10:28:28 PM
thnx
Title: Re: does your car run better in the rain?
Post by: Philly Steve on June 11, 2009, 12:04:16 AM
i notice better throttle response in the rain sometimes but i never seem to get anywhere, the tires just spin 
Title: Re: does your car run better in the rain?
Post by: timot_one on June 11, 2009, 10:32:00 AM
While the air more dense when it's cooler, which is good for performance, I'm not quite sure how much the humidity affects the density of the air. I'm sure one of our smarty pants members can expand on this, but I'm sure that increased humity would diminish performance. How much? I don't know.
Title: Re: does your car run better in the rain?
Post by: Mike on June 11, 2009, 10:43:00 AM
The addition of water vapor to air (making the air humid) reduces the density of the air:
This occurs because the molecular mass of water (18) is less than the molecular mass of air (around 29). For any gas, at a given temperature and pressure, the number of molecules present is constant for a particular volume. So when water molecules (vapor) are introduced to the air, the number of air molecules must reduce by the same number in a given volume, without the pressure or temperature increasing. Hence the mass per unit volume of the gas (its density) decreases.
This occurs because the molecular mass of water (18) is less than the molecular mass of air (around 29). For any gas, at a given temperature and pressure, the number of molecules present is constant for a particular volume. So when water molecules (vapor) are introduced to the air, the number of air molecules must reduce by the same number in a given volume, without the pressure or temperature increasing. Hence the mass per unit volume of the gas (its density) decreases.
Title: Re: does your car run better in the rain?
Post by: timot_one on June 11, 2009, 11:35:19 AM
^That's the info I was looking for! Thanks Mike.
Title: Re: does your car run better in the rain?
Post by: Jeff Likes Bagels on June 11, 2009, 12:13:47 PM
100% humidity 24/7 in Florida sucks :(
Title: Re: does your car run better in the rain?
Post by: Mike on June 11, 2009, 12:50:11 PM
Quote from: "timot_one"
^That's the info I was looking for! Thanks Mike.
I wish I could say it came striaght from my head. I new the basics but, thank you wikipedia for the very good write up.
Title: Re: does your car run better in the rain?
Post by: macanic on June 14, 2009, 07:49:22 PM
hahaha.wikipedia FTW. my air filter is metal insted of cloth. so i dont know.. but im not complaining:) thanx for the good info as usual..