Originally Posted by basus

What is AC Econ mode suppose to do. I always keep at Auto mode

Originally Posted by JKWright

First off: There are a lot of smart-assed know-it-all ****** on this board who're quick to offer a condescending shot at first blush. I find it a sign of weakness. It's disappointing. Lots of static on this forum and not much knowledge.

Secondly: Gsedanman, I expect your numbers are pretty close, although I'd peg it on the high end of your range when the compressor is engaged. So Corgi, you bet you'll feel a little tug when the compressor is running. (As you know.) The relative power loss -- what you feel on the SOTP dyno -- depends on the overall power curve and torque of the engine and efficiency of the compressor.

Even though the compressor in my wife's G20 is similar in size and efficiency, it feels like a boat anchor is dropped out the back of the car when it engages. A 15-horsepower drag on a 145-horsepower engine is, relatively speaking, a huge number when compared with a 15-horsepower drag on a 298-horsepower engine. Her car turns into a 130-horsepower (and in reality much less during a Dallas summer, with the 100-degree ambient heat sapping another 10 or 15 horsepower compared with a 70-degree baseline) slug, while my G35 merely drops to a 283-horsepower slightly-less-speedy rabbit.

And finally, Corgi, as a guy who's owned five Nissan cars over the last 15 years or so intermixed with a Dodge, Oldsmobile, Pontiac and countless rentals, I think that Nissans in general seem to run compressors that put a heavier drag on the engine than many other manufacturers. The G35 is no exception. I've noticed it with every single Nissan I've bought.

Originally Posted by snelldogg

Luxx..While the answer seemed pretty obvious there is no need for you to be such an as#@**(. Take that somewhere else! Or stop borrowing daddy's car and get off this site.