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07-24-2006, 01:23 AM | #51 | |
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07-24-2006, 11:25 AM | #52 | |
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07-24-2006, 11:52 AM | #53 | |
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+1....... .......I can't stand driving with my AC on. Tust me, with temps hitting tripple digits on a daily basis, and humidity levels way over eleventy billion %, I would be using it if there was no difference. Last edited by licwyd7755; 07-24-2006 at 11:58 AM. |
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07-24-2006, 12:10 PM | #54 |
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Vehicle:2015 STI Grey Metallic |
It does shut off at WOT, but evertime I change gears it clicks back on and the revs drop too quickly and it makes the revs too low for the next gear unless I really force the shifter into the gate. What about if you are at part throttle in a race, it definitely makes the throttle more dull and not as responsive? I guuess you've just gotten used to it, or it doesn't make as big a difference on the dirt.
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07-24-2006, 01:30 PM | #55 | |
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07-24-2006, 01:44 PM | #56 | |
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07-24-2006, 04:09 PM | #57 |
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Vehicle:2002 2JC blue |
The second radiator fan goes on with the AC switch. Hence, the mod to keep the AC from going on, yet turn on the second fan, can increase performance under some circumstances. This was described on Nasioc a long time ago.
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07-24-2006, 04:13 PM | #58 |
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Location: Now with 100% more mods!
Vehicle:2004 WRX Sedan Pockmarked/dented silver. |
On a positive note, once I installed my stealthback and picked up 15 or so hp, the power suck from a/c isn't noticable. I still hardly ever use it, but it helps.
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07-24-2006, 04:20 PM | #59 | |
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yah man, i pump ac into my intercool4r and through my vents, real fast if you ask me..especially at wot cuz it teh shuts down my interior vents and just blows cold air at my intercoolr, god i love this ^ mount setup |
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07-24-2006, 04:36 PM | #60 |
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It's a very noticeable difference between AC on and off at part throttle in a 2.0L WRX. I turn mine off momentarily when getting ready to start from lights and stop signs because it bogs the motor down so much that it's hard to start smoothly. And trying to get the revs up off idle for hill starting with the A/C on takes a ton more throttle than with the AC off.
It may switch off at full throttle, but it's definitely like dragging around a boat anchor in normal driving with small throttle openings. Last edited by Chuck H; 07-24-2006 at 04:42 PM. |
07-24-2006, 04:50 PM | #61 |
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Any small displacement engine without a lot of low end torque is going to be affected by the presence of an A/C compressor turbo or not. I find that double clutching helps a bit to get rid of some of the drivetrain slack induced by the laggy engine, but it's rare that I use A/C as the heat doesn't bother me.
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07-24-2006, 05:31 PM | #62 | |
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Out of curiosity, when did they start this? I thought I noticed it in my '91 LT, but that may just be something else. It didn't seem to shut off in my '94 wagon, but it was so slow that I probably just didn't notice. I knew WRXes did, but I just didn't know what all else they did it in..... |
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07-24-2006, 05:40 PM | #63 |
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It is harder to notice the difference when driving an auto with the air on. With the air on, driving stick, it is more easily noticed, you have to work the clutch/gas a bit differently.
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07-24-2006, 05:44 PM | #64 |
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I try to go w/o using AC whenver possible. It is more strain on everything from the engine to the cooling system. Although it is not too bad on our cars, it can use up to a third of a vehicle's gas just to run the AC. Regrding auto-shutoff and WOT, it is a cool feature, but it still sucks when trying to just get on it a little. If I am getting on the freeway I just turn it to 'vent' temporarily or push the AC button to turn it off during the WOTness. It's not the fans that are teh suck, it is running the AC compressor.
It is a good idea; however, to run it for a few minutes at least once a month to maintiain the seals/lubricate stuff. So ya'll know, I've found that at speeds above 55ish, I get the best best balance of circulation and tolerable noise from rolling down just the 2 passenger side windows about 3-4 inches. |
07-24-2006, 05:48 PM | #65 | |
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So, if yur just puttin' around, go windows. But if you were cruising on the freeway and basically keeping a constant speed, use AC. |
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07-24-2006, 05:54 PM | #66 | |
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07-24-2006, 06:17 PM | #67 | |
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Okay...
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EVERY FEATURE, from hazards to headlights, requires POWER to use. Period. You can't make freezing cold air without P O W E R. I am not denying the car cuts ac load at WOT. It does. WHY do you think that's so? BECAUSE THERE IS A POWER LOSS. (Duh.) If there were NO LOSS, there would be NO NEED to cut the AC at WOT. Ponder that for a second. ALSO: You are not running at WOT every time you hit the gas (well, maybe you are, but not most folks). Off the line, do you run at WOT? I have yet to meet someone who launches at WOT very well. Here's another test: Go to the drag strip and do four runs: Two w/ ac, and two without. Guess what? You'll run much faster without AC. IN ANY CAR. FINALLY: Datalog a stock REX in 90+ degree weather with A) AC off and B) AC on under heavy load. Guess which exhibits more detonation? AC on. It's funny to see someone as knowledgeable as yourself talk down to others when you have no apparent knowledge of the physics of how a vehicle's AC works either. Just because a car cuts AC at WOT does NOT mean you should push its limits with the AC on. As I said before, IT CUTS AC FOR A REASON: To prevent the H U G E current demand of your AC system. Every action has an equal and opposite reaction. Compressing and cooling warm air requires POWER. Period. Try to run your ac with no alternator. It won't work too well. It's why they run those red and black wires to all of the gizmos in your Subie...they require power. Saab-on-the-Cobb |
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07-24-2006, 11:16 PM | #68 |
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I don't know. In my 94 4runner turning off the AC is like turning on a turbo. I hardly ever use it.
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07-25-2006, 12:04 AM | #69 |
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All you people need to get a life. 3 pages on power loss w/ the AC on.
Jesus Christ you should all be driving 20 year old Hyundais. |
07-25-2006, 08:49 AM | #70 | |
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07-25-2006, 09:01 AM | #71 | |
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07-25-2006, 09:08 AM | #72 |
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i dont see any lose of power in my car.
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07-25-2006, 10:07 AM | #73 |
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Its not a signifigant loss in power, but enough to make honda drivers notice
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07-25-2006, 10:16 AM | #74 | |
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Of course the AC reduces power; that's basic thermodynamics and there is no way around it.
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07-25-2006, 10:32 AM | #75 |
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Another good way to think about it for the doubters. We all realize that A/C probably only drains 10 or so hp. That doesn't sound like much on a 227 hp car. But look at any dyno of a stock, or even modified WRX. Down around 2000 RPM, they're only making 50 hp or less. Losing 10 of those to the A/C compressor is pretty significant.
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