Higher elevation & cool weather

[Vaughn MacKenzie]

Today I drove from my relatively warm & low elevation climate of eastern Washington to western Montana where it's around 4500-6000ish and in the 40s-low 50s.



I followed behind two '03s and my sniffer could tell the exhaust odor was more noticeable than usual, and it smelled like your older rich-flavored scent that many like. Then I noticed the same thing with my truck. This is with a hot engine running for several hours.



I don't recall my '01 being that way when good and warmed up. Just thought this was a curious observation, being these engines with the new injection system are supposed to be low emissions and all.



Another thing I noticed is the engine clatter is louder, but it could be the load of fuel I got at the last station.



This sure is beautiful country by the way! Saw some snowflakes along the way and many snowcapped mountains. Quite a change from the mid 70s I left at home.



Well I'm bored so just wanted to post something



Vaughn

 

[Whitmore]

Good observation Vaughn, the air is thinner as elevation gets higher so that prolly has sompin to do with it. IE; the Cummins is running richer?



cheers, Kevin

 

[EXSTROKER]

I dont know about the smell but i was in the mountains

the other day ...

and it seemed a lot louder ...

any one notice this...

it was 38 out and 7000 ft

 

[Vaughn MacKenzie]

I was up around 7200 feet & mid 30s today and yeah it seems to rattle a bit more. . . not near as much as the 24-valve did! Got snowed on a bit today too



It was sure cool cruising Yellowstone Park today. This time of year there's hardly anyone there and most of the park is open. It was cool & yucky weather but the extra steam cast off by the geysers and hot pools makes it all the more dramatic.



Vaughn

 

[mbaston]

Haven't had my truck over 3200 feet yet but do notice the increased sound when temps go down below 30. At 25 below and colder, it is loud.

 

[EXSTROKER]

U might be right... now that i think about it

it is temp related so in indio,ca this

summer at 125 I wont here it run