06-05-2012, 09:40 AM
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#29 (permalink)
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A True Z Fanatic
Join Date: Jun 2009
Location: californee way
Posts: 5,380
Drives: 370, Leaf
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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.
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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
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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.
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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.
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