Note it says ALTITUDE, not attitude.

Just wondering, I'm at about 2200 ft. Will my Turbo make proportionately more power than a normally aspirated car vs the same two cars at sea level.

ie - I've got 444 hp, car x has 450 hp. These are sea level measurments right? You lose power at alititude, but I've got turbos, so I lose less. So at altitude, do I now have MORE power than car x does?? Is there some way to calculate relative horsepower losses for altitude and the differences therein with Normally aspirated vs turbocharged cars? If it's a big difference, does that mean the Denver guys are getting a really cheap power boost (wouldn't be a bad reason to move there )

Thanks

 

you will lose power in altitutde but much less then an quivalently HP rated NA car would lose...

 

I've noticed the difference in the car when I was in Vegas as compared to So Cal, but there was more of a difference in my M3 than the TT.

 

Do you mean you felt a greater loss of power in your M3 or in your TT?

 

There are a lot of variables that come into play here. Yes, for 'average' conditions, you will lose some power at altitude due to the thin air (air density). However, if you are at altitude and on a cool day, you will be able to compress the available air more, so the HP loss will be less.

TO calculate the the 'amount' of horsepower compared to normal, you can use this tool (which is provided AS IS, not written nor created by me):

http://wahiduddin.net/calc/calc_hp_dp.htm

 

KoalaCowboy.

Thanks, that's what I was looking for. Now if there is something that calculates the same for Turbocharged engines, I'll be starting to figure this out!!

Cheers

 

Superfly, I will keep digging (being the Techno-geek that I am) and see if I can either find one specific to Turbos OR reverse-engineer the logic in the code and see if I can include the BOOST (x.x BAR) into the algorithm.

Ciao!

 

As mentioned earlier, many variables in power loss at altitude and a turbo does do better than normally aspirated but there is still loss. A VERY general guideline is that with similar air conditions a normally aspirated motor will lose 3% per 1000' and a turbo will lose 1.5-2%.

A stock C6Z06 will be roughly 1 second slower through the quarter in Denver vs. good dry dense air at sea level.

 

Yes, the noticable loss of power was greater in the M3 than it was in the TT going from sea level to 2,500+ feet above sea level.