Altitude ?

[Bobb Todd]

On my older carburated bikes and cars, the effect of altitude was obvious. Heading into the Rockies you could feel the lack of power and had to downshift and keep up the RPMs to maintain any speed when you hit 10,000 feet. The general rule of thumb we applied was a 5% loss of power for each 1,000 feet.The effect is less obvious in a fuel injected gas engine but it's still there. Rather than running rich as a carburator would do, the injection leans out the mix so you don't notice stumbling but you still loose power at the top end.Are the same effects evident with diesel ? I'd assume so since it's going to run lean but don't know enough about diesels to know how that applies.

[Huronlad]

Yes, you will find conditions where you have to run down a gear or two to keep RPM high enough to maintain speed. I had this problem in the Great Smoky Mountains.

[MikeT]

You should also be aware that the cdi is not recommended for use over 2600 metres elevation due to the possibility of fuel boiling. It's in the owner's manual. The best way to gt around that is to have a FULL tank when venturing above 2600, if you have to go.

[Bobb Todd]

You should also be aware that the cdi is not recommended for use over 2600 metres elevation due to the possibility of fuel boiling. It's in the owner's manual. The best way to gt around that is to have a FULL tank when venturing above 2600, if you have to go.

........................That's under 8,000 feet. Would be pretty hard to travel in Colorado or surrounding states. At least the good parts.

[Fred J]

Drop a gear, drive with a light foot and produce less net heat into the fuel, engine oil and coolant.

[bilgladstone]

And my 2 cents' worth: install a new air filter before you hit the hills.

[smart142]

I noticed that the turbo was not able to deliver as much boost in the mountains. Normally mine will get up to 210. In the mountains it was only 180.Slow and staedy is the key to get up the mountains, or draft a truck and let them do the majority of the work

[xakinedmonton]

with the Turbo boost i have never seen my scan gague show any more than 170-180 is that normal? what is the Normal boost pressures

[smart142]

What's the elevation in Edmonton?When I saw only 180 I thought my turbo was failing. Back in Ontario it shows 210- all is good.

[Ravk]

Edmonton is at 2100 ft. I had 200+ on a borrowed scangauge last month.Robert

[xakinedmonton]

Soo odd.. so back to question, whats the normal running range, and what is the 200 anyway, PSI? or what?

[Huronlad]

BAR or Atmosphere, the metric equivalent of PSI.Max boost pressure for the smart is around 18 PSI, is it not?That would equate to a BAR/Atmosphere reading of around 122 -124.Is there a way to get the SGII to read the correct amount? My SGII is always reading 13.8 PSI high, max PSI of 32.

[xakinedmonton]

Oic, well mine is always reading from low 80s to high of 170-180 ish

[MikeT]

200 would be kPa, kilopascals. Mine blows up to 221 kPa at sea level, in 4th gear at higher RPM.

[Huronlad]

Mike,221 kPa would equate to 32 PSI, that is not correct though is it?

[MikeT]

Mike,221 kPa would equate to 32 PSI, that is not correct though is it?

Sure it is, for manifold absolute pressure! Boost pressure is 221 - 100.....

[bilgladstone]

Mike,

221 kPa would equate to 32 PSI, that is not correct though is it?

Mike speaks in tongues. That's because the ScanGauge displays Manifold Absolute, which is the sum of ambient plus boost.

Subtract your region's Ambient air Pressure (like what the weather report says, e.g. 101.2kPa right now in Kelowna) from Manifold Absolute Pressure to get Boost Pressure.

The X-Gauge does it for you and displays Boost instead of MAP (once you have input Ambient)

HTH

Bil

[xakinedmonton]

Oic.. I have the Maxitrip and it shows MAP, I have not seen anywhere to input the Ambient Air Pressure.. but i shall look around. .