I noticed that my coupe seems to be performing better .. a few mpg more and the acceleration seems better.

Is it the hot weather or is it that the MB 2.3 gets better with age and/or mileage ?

Also, when the A/C is on , it seems that the car has more power ; I guess that's be cause it stays in gear longer
( than without A/C on ).

Please comment with your experience.

 

Can not agree more. My car has 9K miles and is getting better mpg, feels quicker, and is still solid. Not a single issue or complaint. So far this C230 Coupe has been a great ride. I probably just jinxed myself.

 

Does the reason it feels quicker have anything to do with a certain alloy pulley?

 

hot weather can be part of the reason for better mileage, since hot air is less dense, meaning it provides less resistance. but yeah, most cars tend to do better once they are truly broken in. not the 1000 or 1500 mile break in, but after 5K miles or so, everything just seems to work better. but once you hit 60k miles, it goes downhill. but you've got plenty of time til you get there.

 

No, Unfortunately no pulley installed yet. I think the quicker feel has more to do with the C7 shifter finally loosening up and me driving it a lot harder now that it’s broken in. Thus the discovery that I needed more power and better handling.

I still haven't installed any of my Kleemann components as I am still traveling on business. And for some reason while I’m home the wife wants me to spend time with her and the kids instead of my car, go figure. So if I find a spare hour or two I have your instructions, Thanks by the way, printed and Kleemann recommended easy Alt. Pulley tools ready to go.

 

I wonder if c230k will last till 200k+ miles without MAJOR problems?

 

The opposite is true, the car runs better in cool weather because cool air is dense and because it keeps your intercooler cool.

 

the car will have more power when the air is cooler yes, but in terms of mpg, hotter air means less air resistance which means you need less power. i dont know what the two graphs would look like (mpg vs. temp and power vs. temp) so i cant say when you would get the best of both.

 

But then you run the A/C more or keep your windows open so there goes the MPG.

 

Wait until you hit 40k miles, then things are getting better on these cars, my 99 E55 has 48k miles and it is running very strong, the MB shop foreman mention to me that these engines to really well with time, it seems to be like life "the older you get the better you get". Right women? haha.

 

LOL

 

Cool air is more combustable than hot air, because the air is more dense, the oxygen concentration is generally greater, providin better combustion in the cylinder. I strongly believe that this would overcome any aerodynamic advantage.

Reason:

I live at 6700 ft. When I take my car to lower elevation, it drives even more like a rocket than usual. At lower elevation, there is greater air resistance, but the added Hp is awesome.

I'm not an engineer, but I play one on T.V.