disable auto a/c

Pauly · 06-05-2012, 08:32 AM

to the OP, i may not be understanding what you are trying to accomplish, but i just turn my fan setting off, and my AC will never come on. as far as the car switching to fresh air with many of the settings, its not just the Z, or even nissan for that matter. i've bought several new vehicles in the past few years, and they all have this feature. seems to be the direction they all are headed in as far as a default setting.

the thing about the AC draw from the power, yea it slows you down. same with every car or truck. how much for measurement's sake? i dont know. dont really care. i dont even turn mine off if someone tries to show me up. most of them are douchers anyway, who cant drive good enough to pass me even with a faster car lol

cossie1600 · 06-05-2012, 10:40 AM

Quote:

Originally Posted by cjr1881

Because you can go buy a 3hp Electric compressor means absolutely nothing. You have to be the most ignorant person I have seen posting on this forum with no tuning experience.

Coming from a guy who claims he lost 25HP with the AC on? Really? How many cars have you tuned?

Quote:

Originally Posted by Ubetit

My 4 ton home Ac unit pulls 14500 watts... roughly 19 horsepower. 3 horsepower won't run a 4 ton AC

14500 watt from a 4 ton? Is that AC from 1900? Thats like a 3 seer system. A 4 ton 16 seer is roughly 3000 Watts pull. Also if your number is correct, you are going to need a 66 amps circuit to run it!! (14500/220)

Quote:

Originally Posted by ChrisSlicks

I've used my A/C on track several times to keep the windshield defogged in misty conditions. There was no difference in car feel, acceleration or lap times. An auto A/C compressor isn't quite as efficient as a home unit but the comparison isn't that far off. Power is power as was stated, the difference is in a direct drive compressor you will feel the drag more than the power loss (flywheel effect) and in the low rpm range where the car isn't making much power. At most it pulls 5hp when active and it does seem to disengage under WOT. You'll notice 5hp in a 100hp car, but not so much in a 300hp car.

Yes it shuts off under wot. I have had to pull the car off the track due to fog. AC wont work anytime I was on the straight. The car does feel very odd, almost a jolt when you get off wot though.

dawudih · 06-06-2012, 12:19 AM

Just leave the fan on & compressor off; when you restart the car, the compressor will not turn on as long as the fan was left on.

Waiz · 06-06-2012, 01:44 AM

Quote:

Originally Posted by dawudih

Just leave the fan on & compressor off; when you restart the car, the compressor will not turn on as long as the fan was left on.

Pelican170 · 06-06-2012, 11:03 AM

Ive tried all the tricks in this thread and I cant get it so that the recirculated air is NOT on A/C. Anytime it is set to recirculate, the AC light comes on and i cant find a way to have it just blow recirculated air without the AC being on... the second i push the AC button to turn it off, it switches to fresh air...

06-05-2012, 08:32 AM	#1 (permalink)
Pauly Track Member Join Date: Feb 2012 Location: Lafayette, La Posts: 645 Drives: and parks Rep Power: 16	to the OP, i may not be understanding what you are trying to accomplish, but i just turn my fan setting off, and my AC will never come on. as far as the car switching to fresh air with many of the settings, its not just the Z, or even nissan for that matter. i've bought several new vehicles in the past few years, and they all have this feature. seems to be the direction they all are headed in as far as a default setting. the thing about the AC draw from the power, yea it slows you down. same with every car or truck. how much for measurement's sake? i dont know. dont really care. i dont even turn mine off if someone tries to show me up. most of them are douchers anyway, who cant drive good enough to pass me even with a faster car lol __________________ Gun Metallic 2012 370 Z 7AT

06-06-2012, 11:03 AM	#5 (permalink)
Pelican170 Track Member Join Date: Jul 2010 Location: Sandy Hook, CT Posts: 972 Drives: Nissan 370z Nismo Rep Power: 18	Ive tried all the tricks in this thread and I cant get it so that the recirculated air is NOT on A/C. Anytime it is set to recirculate, the AC light comes on and i cant find a way to have it just blow recirculated air without the AC being on... the second i push the AC button to turn it off, it switches to fresh air... __________________ Fast Intentions CF Exhaust - Fast Intentions HFC's - HPS Tubes w/ AFE Dry Flow Filter's

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06-06-2012, 12:19 AM	#3 (permalink)
dawudih Base Member Join Date: Mar 2011 Location: Katy, TX Age: 52 Posts: 93 Drives: 2011 370z auto Rep Power: 16	Just leave the fan on & compressor off; when you restart the car, the compressor will not turn on as long as the fan was left on.