Boost # down??

[CAROLINA CUMMINS]

Maybe I'm just a worrywart, but in the last week my boost has been down, not much but maybe 1-2#. That might be too little to worry about. But, it has been alot warmer this week, I've only had my guages this winter never had them in very warm weather(70deg today), could that make any difference?? I also lowered my tire pressure about 15# so they can wear on the edges more. Is any of this affecting my boost??





Thanks, Steve

 

[nascar mark]

Hi,

With warmer weather it is normal to have a slight loss of power as the air is less dense.

Droping your air pressure would cause somemore rolling resistance, which would make the engine work slightly harder, so boost would raise a small amount. Probly not enough to see a difference.

 

[CAROLINA CUMMINS]

So, if I was used to seeing boost in colder weather (20-40) since I just got my guages 2 months ago, it goes down some in warm weather: 70 deg right now. When I think about it, I hit my highest boost awhile back when it was cold in the mornings. I can still hit 23-24# but have to work harder at it, Thanks







Steve

 

[paccool]

Is the winter fuel causing a loss of power and boost? Has been real cold on the east coast, they may have modified the fuel more than usual due to the cold.



Stan

 

[JLEONARD]

I see a boost change of 2 to 3 psi due to temp changes also.

When we had 0 and minus days I could easily hit 28 psi.....

26/27 now. Will be 25 once summer gets here... . if it ever does!

Jay

 

[bmoeller]

I drive a big truck(Mack CH 613) about half the year. Have aftermarket gauges, Boost/Pyro. I get 20-23 psi in winter and 18 in summer. This truck only makes (EM6) 300 hp. . With a 5spd. you need all you can get. This thing seems to have more power in the winter vs. summer. Probably do to the cold air.