Armchair theory - extreme cold air intake.

[cfeng]

if someone tells me the mass flow rate of the air, or mass flow rate of the fuel, that passes through the engine, i can tell you how much more air can be consumed by an air conditioner operating 1.5-2 kw, cooling about 4-5 kw. i can approximate what power gains may be achieved.

correction to previous post, this would not be considered a forced induction at all, since pressure does not change due to cooling.

[Yarisduder]

Originally Posted by cali yaris

LOL, good one.

People DO ice down the intakes when trying to get an "extra special" dyno pull.

Speaking of which, has anyone done back to back dyno pulls with the AC off and on?
Do we actually know in measurable terms what effect it has on the motor's power/efficiency?

This whole thread is based on a premise that the AC's single pulley makes a really big difference. I'd like to know what hard data supports that. (And yes, I can feel it with my butt just like everyone else).

+1, I too would love to see the quantified data instead of the "hear say" and "I feels"

I had thought of sticking a halogen light bulb in the intake to increase inlet temperatures for better fuel efficiency, but I like the ice box idea better

[djct_watt]

Just do a MPG check, one with AC always on and one without. Last time I did it, I saw almost a 5% reduction in MPG, so it should be close to the same in power draw. Don't forget that small numbers are usually within margin of error for dyno pulls.

Here's a link to a discussion about HP draw of an AC unit.
http://www.bobistheoilguy.com/forums...Number=1944982

[cali yaris]

I saw almost a 5% reduction in MPG, so it should be close to the same in power draw.

You're saying it's a 1:1 proportion of MPG to power? That doesn't sound right at all.

[djct_watt]

Originally Posted by cali yaris

You're saying it's a 1:1 proportion of MPG to power? That doesn't sound right at all.

I mis-phrased, lol. Definitely not 1:1.