HP gains from Cold?

FLUJOKE · 11-24-2014, 02:24 PM

On Avg for NA how much RWHP Gains do you get in the winter let's say going from 75dg to 55 dg? Thank you

totopo · 11-24-2014, 02:30 PM

Relative Horsepower Calculator

like 2.2% (7hp)

Hotrodz · 11-24-2014, 09:55 PM

Altitude and humidity can have big impact on performance.....

jpkirk · 11-24-2014, 10:39 PM

So you have a cold?

You have to sneeze backwards for additional thrust. Hard to see that way though.

90 ST · 11-25-2014, 12:52 AM

Quote:

Originally Posted by jpkirk

So you have a cold?

You have to sneeze backwards for additional thrust. Hard to see that way though.

I find with my subs pointing back and the hatch open, I get 4 tenths...LOL

JC-Nismo · 11-25-2014, 01:24 AM

I love driving my cars in cold weather, it's a total different power than that of a heat soaked engine.

G37Sam · 11-25-2014, 01:33 AM

Turbo'd cars especially feel a lot more alive in winter.

Jordo! · 11-25-2014, 07:21 AM

Realistically, you will see gains around 10% on a dyno -- even with stingy correction -- if we're talking a 20* F drop in temps, all else being equal. Cold temps mean a denser charge of oxygen. Of course it will consume a bit more fuel to maintain target AFR's, but who's complaining?

Also, make sure your oil is at least around 175 - 180* F before flogging it... colder temps also means the oil will be slower to get up to optimal temps.

0101 · 11-25-2014, 08:53 AM

Another way to look at it, if you never notice the difference between summer and winter, you probably won't notice that $2,000 part either.

kenchan · 11-25-2014, 02:15 PM

Quote:

Originally Posted by 0101

Another way to look at it, if you never notice the difference between summer and winter, you probably won't notice that $2,000 part either.

kinda like spending $5K on wheelsets. cant see it while driving either.. useless..

kenchan · 11-25-2014, 02:16 PM

Quote:

Originally Posted by FLUJOKE

On Avg for NA how much RWHP Gains do you get in the winter let's say going from 75dg to 55 dg? Thank you

i dont have scientific data, but 70F is where i start noticing major changes on my 4 banger as far as loss in power. on the Z, i cant tell too much of a difference in heatsoak unless into 80F range or sitting in slow traffic.

Mitco39 · 11-25-2014, 02:40 PM

My car gets slower when it gets colder. It just spins through gears 1 through 3. haha. The trick is to go out in the evenings when the air is cool but the pavement is warm.

11-24-2014, 02:24 PM	#1 (permalink)
FLUJOKE Track Member Join Date: Apr 2012 Location: earth Posts: 770 Drives: car Rep Power: 2067	HP gains from Cold? On Avg for NA how much RWHP Gains do you get in the winter let's say going from 75dg to 55 dg? Thank you

11-24-2014, 02:30 PM	#2 (permalink)
totopo Base Member Join Date: Oct 2013 Location: California Posts: 32 Drives: '14 370z 6mt Rep Power: 12	Relative Horsepower Calculator like 2.2% (7hp) Jordo!, SouthArk370Z and ZeroZeta like this.

11-24-2014, 09:55 PM	#3 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	Altitude and humidity can have big impact on performance..... kenchan and Jordo! like this. __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

11-24-2014, 10:39 PM	#4 (permalink)
jpkirk A True Z Fanatic Join Date: Jun 2012 Location: Merry Land Posts: 5,515 Drives: '14 MidBlu ST MT Rep Power: 3376	So you have a cold? You have to sneeze backwards for additional thrust. Hard to see that way though. DEpointfive0, Mitco39, prat7728 and 1 others like this. __________________ intake \| exhaust \| wheels \| tires \| suspension ... um ... stock, do speed stickers count? intake \| exhaust \| TE37 SL \| RE-11 \| suspension ... um ... do speed stickers count? Signature under construction

11-25-2014, 01:33 AM	#7 (permalink)
G37Sam A True Z Fanatic Join Date: Dec 2008 Location: Dubai, UAE Posts: 1,507 Drives: RB'd G37 Rep Power: 20	Turbo'd cars especially feel a lot more alive in winter. __________________ '14 Viper GTS '08 RB'd G37S - Sold

11-25-2014, 01:24 AM	#6 (permalink)
JC-Nismo A True Z Fanatic Join Date: Sep 2014 Location: Atlanta Posts: 1,244 Drives: 2011 Nismo 370z Rep Power: 13	I love driving my cars in cold weather, it's a total different power than that of a heat soaked engine.

11-25-2014, 07:21 AM	#8 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	Realistically, you will see gains around 10% on a dyno -- even with stingy correction -- if we're talking a 20* F drop in temps, all else being equal. Cold temps mean a denser charge of oxygen. Of course it will consume a bit more fuel to maintain target AFR's, but who's complaining? Also, make sure your oil is at least around 175 - 180* F before flogging it... colder temps also means the oil will be slower to get up to optimal temps. Hotrodz likes this. __________________ Enjoy it. Destroy it.

11-25-2014, 08:53 AM	#9 (permalink)
0101 Base Member Join Date: Dec 2013 Location: Stockholm, Germany Posts: 95 Drives: N/A Rep Power: 11	Another way to look at it, if you never notice the difference between summer and winter, you probably won't notice that $2,000 part either.

11-25-2014, 02:40 PM	#12 (permalink)
Mitco39 A True Z Fanatic Join Date: Aug 2012 Location: Edmonton Alberta Canada Posts: 2,089 Drives: 40th 370z Rep Power: 132	My car gets slower when it gets colder. It just spins through gears 1 through 3. haha. The trick is to go out in the evenings when the air is cool but the pavement is warm. JWillis72 likes this. __________________ 2007 Chevy Duramax - EFILive Tuned By Me 2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her My Build --> http://www.the370z.com/members-370z-...39s-build.html

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