6speedctrlfreak

I know that engines really like cooler ambient temps but I have noticed that since we've (NYC) had this strecth of 80 degrees...then back down to 40/50's from day to day that the engine feels much stronger in all gears/ranges when it's cooler. A/C not being used yet) is this related to the "winter gas" that is still being sold at the pump???

Nashua_Night_Hawk

no weather can increase or decrease HP by 7-10%!! It is like having 180 WHP at one day and the next is like 220 WHP.

phatpat

colder weather=faster

(heat kills the engine)

Nashua_Night_Hawk

Using this Calc: http://wahiduddin.net/calc/calc_hp_abs.htm

Temp 40F, Absolute Pressure: 30.50, 25% Relative Humidity ==> Correction Factor = 0.914. Engine makes , 109.5% of SAE normal conditions

Temp 90F, Absolute Pressure: 29.00, 100% Relative Humidity ==> Correction Factor = 1.086. Engine makes 92.1% of SAE normal conditions

NOVAwhiteTypeS

nausha hmm I drove my car in 5 degrees weather and also 105 degrees weather LOTS of differeance

gavriil

Colder air = denser air. Denser air = more air molecules in the combustion chambers = more oxygen molecules = more violent explosion = more power.

BlueCLS6

Yeah, temperature is a big deal but not as much as elevation! Take a look at this graph I made to see what the difference would be from sea-level here in L.A. to the South Rim of the Grand Canyon (7100ft.):

Zapata

hmmmm me thinks i need to do this mugen t-stat upgrade for the summer.

darrinb

would this help out w/ the hotter temps??

Zapata

Yes, especially on those HOT HOT days where your car has been running all day.

gregshin

If you guys ever turbo or S/C your car you'll feel even a bigger difference in cold air. During the day my boost gauge hits around .65 bar then when its time i can hit .82 bar. that is pretty sick

.65 x 14.7 =9.55 PSI
.82 x 14.7 =12.05 PSI

darrinb

how much does it cost??

AK_MOBBER

I can tell you for sure that my TL runs like shit when the whether is 115 degrees here in the summer. The 3.2 liter engine is very happy between 32 and 60 degrees. You will notice this expecially in the morning if you stomp the gas within the first 5 minutes of driving. It has mad torque and pulls like crazy!@!

Zapata

*EDIT*
$90 for the unit plus install. They say it can be done at home. See the next page in Scalbert's post.

Nashua_Night_Hawk

Best days for CLS when it is cold (anywhere below 40-50F) AND clear with High Pressure AND low Relative Humidity or Low Dew Point.

SilverKnight

Days with these conditions in Houston come once every 5 years

scalbert

Not the water pump, the T-Stat housing and fan switch are located just below the TB.

In the below pic you can see the coolant hose to the very left with the spring clamp on it. This is attached to the T-Stat housing and you can just about see the lower bolt:

T-Stat Housing

Zapata

Really? Huh....well i guess it makes the install a little easier then?

scalbert

Significantly easier and somethin someone with a 12mm socket and an adjustable wrench can have done in twenty minutes (less the clean up).

Zapata

Well i'll be a monkey's uncle. Thanks

6speedctrlfreak

hey thanks for the feedback ....I knew it wasn't just my imagination!!! Yesterday and Wednesday and thursday here in NYC we've been in the fifties and the car is super strong. Does the CT Icebox help with the warmer weather performance??

allmotor_2000

It's easy to install the T-stat, but you need the fan switch as well!