More power with A/C on?

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More power with A/C on?

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Audi >> Audi Models >> Audi TT >> More power with A/C on?

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More power with A/C on? - 5/11/2008 2:44:21 PM

exTTreme

Posts: 220
Joined: 2/29/2008
Status: offline

So when I got my car driving with the a/c on felt like I was losing power but recently when the a/c is off car feels kinda sluggish and when I turn it on it feels like I have more power also I hold 2 psi of boost higher after the initial spike with a/c on. Anyone know why this might occur?

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2001 Aviator Gray 225Q
soon to be GT3076R Powered

Post #: 1

RE: More power with A/C on? - 5/11/2008 3:16:47 PM

achTTung

Posts: 3272
Joined: 9/26/2005
From: Burlington, VT
Status: offline

These cars are smart, I wouldn't be surprised if it adds a little boost to compensate for the draw of the AC. With my old A4 2.8L V6, you could hear the relay turn the AC off when you went WOT. Whether it was to keep the compressor from spinning so fast, or to conserve power, I can't say, although I'd lean toward option 1 if I had to choose. Point is, they're always doing things...

Now, the car feeling sluggish with AC off, but ok with it on... I have no clue how to explain that one.

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Rennline |Axis Motorsport

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RE: More power with A/C on? - 5/11/2008 3:21:24 PM

MeanAudiA6

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Joined: 11/1/2005
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thats odd completely different here...thats why i hate the AC lol

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RE: More power with A/C on? - 5/11/2008 3:27:42 PM

achTTung

Posts: 3272
Joined: 9/26/2005
From: Burlington, VT
Status: offline

low power with AC on is normal. The compressor is parasitic power loss.

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Rennline |Axis Motorsport

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RE: More power with A/C on? - 5/11/2008 5:12:42 PM

exTTreme

Posts: 220
Joined: 2/29/2008
Status: offline

Yeah 2 years ago when I bought it I always cruised with windows down so I wouldnt have to use a/c because I could feel the power loss now its the opposite

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2001 Aviator Gray 225Q
soon to be GT3076R Powered

(in reply to achTTung)

Post #: 5

RE: More power with A/C on? - 5/12/2008 4:47:16 AM

beachchair

Posts: 524
Joined: 12/21/2007
From: South Florida
Status: offline

If you find out what's causing your power gain with the a/c on, let us know as I would be interested in that modification.

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RE: More power with A/C on? - 5/12/2008 5:24:54 AM

exTTreme

Posts: 220
Joined: 2/29/2008
Status: offline

I figured something was getting ready to break as cars dont normally do good things on there own lol

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2001 Aviator Gray 225Q
soon to be GT3076R Powered

(in reply to beachchair)

Post #: 7

RE: More power with A/C on? - 5/12/2008 6:25:30 AM

diehlryan

Posts: 2254
Joined: 11/22/2006
Status: offline

the AC on is putting load on the engine and therefore spooling the turbo. It may just feel like its more power because you're spooling the turbo sooner.

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- Ryan

2001 TTR FWD