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Discussion Starter #1
in my car when you're cruising and you turn on the air conditioning it feels like you hit a brick wall, almost like a down shift. does the si have enough power to run the AC and still carry it's weight?
 

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Discussion Starter #3
my bad, i'm not talking about an si. i don't have mine yet. that was a description of my current car. i'm wondering if the si is as noticable.
 

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yes the si does do this, i used to drive a 96 ford escort and hell if you wanted turbo then you just shut the ac off, i thought when i bought the si it was goin to change but nope, turn the si on and you lose the fun , you always get like this sluggish feel, thats why i always got the windows open, its better then the si. the ac is so you dont die when its 95 degrees out side but its raining
 

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I was at a meet on Saturday and was in a long line of cars going up a very steep hill. The hill was so steep that when I put the clutch in, the car immediately began to roll backwards. There were about 8 cars in front of me at a stop sign at the top of the hill. I had to turn the A/C off so that I could make it up the hill. The A/C at idle was really sapping the power.

I have a G35 too and one that is modded quite a bit. One time, a jerk in a Mazda 6 cut me off and came up to the stoplight. I got in the other lane next to him with my A/C on. When the light changed, I floored it as did he. I barely beat him. I was quite surprised by how much slower the car was with the A/C on from a stop.
 

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On my Si the A/C doesn't seem to affect the car that badly, although it doen't cool down the car that well either.

However, on the s2000, a car with a weaker A/C and more power, the car dies off the line with A/C on unless you really slip the clutch.

any ideas as to why this is? maybe the clutch on the Si A/C that I hear people talking about?
 

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Actually AC decreases performance on all cars not just ours. The AC causes the car to work harder which equals to less power also more moving parts too.
 

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I noticed when I turn the AC on I also get a decent sounding clunk. Like the car trying to tell you to eff off. I cant say how much power the Si loses with it on, but most all cars do, what I will say is the cooling ability of the AC in this car seems to suck. I used to be able to hang meat in my A4.
 

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TonySI said:
I noticed when I turn the AC on I also get a decent sounding clunk. Like the car trying to tell you to eff off.
I get that clunk sometimes too. I start the car without AC and leave it off until I've gone a couple of blocks. Windows open jettisoning that royal hot air then I turn on the AC. My car surges and hesitates with AC active, a different feeling than other four cylinder cars I've driven. My girlfriend's 2001 Camry (2.2 liter four) seems to handle the AC with much more grace.
 

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AC takes some power away from any car. The more torque an engine makes, the less noticeable the loss of power the ac creates. But we drive hondas and torque is something i've only heard stories about.
 
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