weather outside effect power??

[doom26464]

Well since i got my turbo wich was a big upgrade from my n/a, I have heard that the weather outside can effect your boost thus effecting your power. I hear also when its raining out or shitty wheather it boost lower or had less power or something im not all sure how this all works with a turbo but some info on it might be great, As my car seems to have less pull latly becuases of the moist raining weather. Hear it has something to do with AFM or something like that i dunno... fill me in plz

 

[drunk_medic]

Don't gun it if it's raining out! That's a no-brainer!

As far as weather outside, colder ambient air temperatures can help your car - let's say you have 50 degree air pushing across your intercooler. This further cools the charged air stream going to your intake - cooler air is more dense with oxygen. The more oxygen you can cram into the combustion chamber with more fuel, the more horsepower. Between a Florida summer and winter [from 80-90 degrees down to 40-50], I have felt considerable changes in my seat-of-the-pants dyno.

 

[supraman7mgte]

Yup,the cold weather will definately affect your take -off.BUT,as soon as it warms up...

 

[Poatree]

my ass-dyno also confirms that 2-am racing is faster than midday.

 

[Supra Blues]

my ass-dyno also confirms that 2-am racing is faster than midday.

Yes colder air is more dense, hence more oxygen = more power.

 

[$pecialk91Turbo]

I think its about 1-5hp for every 10 degress cooler for an N/A and even more on a turbo. Elevation, barometric(sp?) pressure, and humidity also have an affect on how efficiently your turbo works.

 

[SupraMario]

I think its about 1-5hp for every 10 degress cooler for an N/A and even more on a turbo. Elevation, barometric(sp?) pressure, and humidity also have an affect on how efficiently your turbo works.

so your saying if i forced like 20 degree air in,i would gain a considerable amount of power?

 

[CSquared]

sure the hell feels like it... we've been having some wierd weather lately... the other day when it was cold the car felt awesome... today she is a dog.

 

[Justin]

so your saying if i forced like 20 degree air in,i would gain a considerable amount of power?

isnt that kinda the point of a big-ass intercooler? Gte the air as cold as possiable before it hits the chamber... so the cooler the wether outside....

 

[bgrieger]

The intercooler only the secondary benefit. The primary benefit is from the lower intake air temperatures at the turbo inlet. Abidiatic heating is roughly the same no matter the air temperature (if it adds 70 degrees at 70, it still adds almost 70 at 40), so it doesn't get the intake charge as hot in the first place, then it all gets the slightly better intercooling effects.

 

[$pecialk91Turbo]

The intercooler only the secondary benefit. The primary benefit is from the lower intake air temperatures at the turbo inlet. Abidiatic heating is roughly the same no matter the air temperature (if it adds 70 degrees at 70, it still adds almost 70 at 40), so it doesn't get the intake charge as hot in the first place, then it all gets the slightly better intercooling effects.

Yep, and cooler air has has more oxygen packed in to the same amount of space (more dense) because the molecules are slower moving than a hot gas. Like how a hot-air balloon works.

 

[sirkus]

My car always runs great in the winter.. (except for the fact that I don't have heat)
It feels like it needs more power in the summer. Mods will soon change that