effects of altitude on acceleration?
01-31-2007, 06:34 PM
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effects of altitude on acceleration?
1995 Accord EX: 2.2L(2156cc), F22B1, MPFI, SOHC 16-valve (Canadian:EX-R)
question: i just moved from a low altitude region to denver, colorado. what adjustments can be made so that my car isn't so sluggish when accelerating?
thanks!
question: i just moved from a low altitude region to denver, colorado. what adjustments can be made so that my car isn't so sluggish when accelerating?
thanks!
01-31-2007, 07:56 PM
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Re: effects of altitude on acceleration? (dakers01)
There shouldn't be any need for adjustments because the barometric pressure sensor is supposed to know the difference, and tell the ECU to wise up to the higher altitude.
01-31-2007, 08:12 PM
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Re: effects of altitude on acceleration? (hondadude)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondadude »</TD></TR><TR><TD CLASS="quote">There shouldn't be any need for adjustments because the barometric pressure sensor is supposed to know the difference, and tell the ECU to wise up to the higher altitude.</TD></TR></TABLE>
Hondadude is right. Smart.
Hondadude is right. Smart.
02-01-2007, 08:28 AM
#4
Re: effects of altitude on acceleration? (hondadude)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondadude »</TD></TR><TR><TD CLASS="quote">There shouldn't be any need for adjustments because the barometric pressure sensor is supposed to know the difference, and tell the ECU to wise up to the higher altitude.</TD></TR></TABLE>True, there's no adjustment. Air/fuel ratio & engine controls are all good.
But the lack of power is just life. Can't do anything about it (install a turbo?).
But the lack of power is just life. Can't do anything about it (install a turbo?).
02-01-2007, 02:48 PM
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Re: effects of altitude on acceleration? (Honda4lyf)
The MAP sensor will adjust the air/fuel mixture according to barrometric pressure, however, there is less oxygen at higher altitudes. The size of the throttle body is fixed, so less oxygen per gulp of air will mean less fuel mixed with it and, consequently, a little less power.
02-01-2007, 04:33 PM
#7
Re: effects of altitude on acceleration? (amckee)
The percentage of oxygen in the air doesn't change much, but the overall amount of air is less. So the engine can't suck in as much air. Just like you can't suck in as much air when you breath.
So it's not just less oxygen, its also less nitrogen & everything else.
So it's not just less oxygen, its also less nitrogen & everything else.
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02-01-2007, 05:50 PM
#8
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Re: effects of altitude on acceleration? (Honda4lyf)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Honda4lyf »</TD></TR><TR><TD CLASS="quote">Doesn't the ecu adjust itself for this?</TD></TR></TABLE>
when you got less air, you got less air, the ecu can do slight adjustment but ultimately it can't change the fact that it got less air
n20
when you got less air, you got less air, the ecu can do slight adjustment but ultimately it can't change the fact that it got less air
n20
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