The Summertime AC blues

shortseller · 05-09-2011, 05:15 PM

Sure do love my AC in the summer season but I see a lot of my fellow brethren running around with windows down on really hot humid days. What gives, am I missing something other than a good sweat to the supermarket?

Does running the AC make our car's performance numbers go down?

Mileage drops a little but that is to be expected.

Syndicategt · 05-09-2011, 05:19 PM

Maybe what you consider hot and humid isn't to them and they are enjoying the fresh air? Yes, AC will cut your performance and mileage as well as produce a lot of heat. This is the reason you see people run with the AC off at the track, some even put the heat on full blast to lower oil temps.

enrita · 05-09-2011, 05:20 PM

The AC turns off automatically when you go WOT to give full power

Syndicategt · 05-09-2011, 05:23 PM

Forgot to mention, it's about 5-10 hp to use it. It's not all that much.

shortseller · 05-09-2011, 06:33 PM

Quote:

Originally Posted by Syndicategt

Forgot to mention, it's about 5-10 hp to use it. It's not all that much.

Probably equals out if you consider the extra drag from non AC users having their windows being open.

shortseller · 05-09-2011, 06:45 PM

Quote:

Originally Posted by enrita

The AC turns off automatically when you go WOT to give full power

Cool, didn't see that in the manual!

mycoupe · 05-09-2011, 06:50 PM

Quote:

Originally Posted by shortseller

Probably equals out if you consider the extra drag from non AC users having their windows being open.

Actually, most modern AC compressors are so efficient that you will actually lose more mpg's due to drag with the windows down than with the AC on!

blacknbean · 05-09-2011, 07:36 PM

this is probably the first car ive owned where the a/c doesnt affect it that much. my previous cars were hondas, so maybe with the lack of torque its a bigger hit on those cars...i drive a manual and dont even notice its on

WilliamE92 · 05-09-2011, 07:49 PM

my fragile delicate white skin cant handle the heat past 80 degrees

max snow flake all day err day, just like my ancestors intended

05-09-2011, 05:15 PM	#1
shortseller Brigadier General 1008 Rep 3,396 Posts Drives: ‘18 ABM F80ZCP/dct Join Date: Aug 2010 Location: NOVA iTrader: (0)	The Summertime AC blues Sure do love my AC in the summer season but I see a lot of my fellow brethren running around with windows down on really hot humid days. What gives, am I missing something other than a good sweat to the supermarket? Does running the AC make our car's performance numbers go down? Mileage drops a little but that is to be expected.
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05-09-2011, 05:19 PM	#2
Syndicategt Brigadier General 164 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Maybe what you consider hot and humid isn't to them and they are enjoying the fresh air? Yes, AC will cut your performance and mileage as well as produce a lot of heat. This is the reason you see people run with the AC off at the track, some even put the heat on full blast to lower oil temps. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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05-09-2011, 05:20 PM	#3
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	The AC turns off automatically when you go WOT to give full power __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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05-09-2011, 05:23 PM	#4
Syndicategt Brigadier General 164 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Forgot to mention, it's about 5-10 hp to use it. It's not all that much. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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05-09-2011, 07:36 PM	#8
blacknbean Major 14 Rep 1,044 Posts Drives: e92 335i 6MT Join Date: Jul 2007 Location: LA iTrader: (2)	this is probably the first car ive owned where the a/c doesnt affect it that much. my previous cars were hondas, so maybe with the lack of torque its a bigger hit on those cars...i drive a manual and dont even notice its on
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05-09-2011, 07:49 PM	#9
WilliamE92 First Lieutenant 23 Rep 318 Posts Drives: 2013 EB F30 335 MT Join Date: Aug 2009 Location: CA iTrader: (1)	my fragile delicate white skin cant handle the heat past 80 degrees max snow flake all day err day, just like my ancestors intended
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