[Diy_efi] 1227747 AE question

Sat Feb 19 02:58:37 GMT 2005

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The two AE types work together and serve somewhat different purposes.  =
TPS AE is the initial squirt that keeps the mixture from going badly =
lean with the sudden availability of air when you nail the throttle.  =
MAP AE is more to help smooth the transition from low-load to high-load =
and consequently help the engine accelerate more smoothly.

Both types of AE are used any time you open the throttle.  TPS AE is =
very quick, while MAP AE stays around a little longer.  If your datalogs =
show a lean spike when you kick the throttle, you need more TPS AE.  If =
it's less spikey and feels more like a lean bog, give it more MAP AE.  =
Most of the time, if you have to increase one, you'll need to increase =
the other as well.

This is just my experience, which admittedly isn't very extensive.
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<DIV><FONT face=3DArial size=3D2>The two AE types work together and =
serve somewhat=20
different purposes.&nbsp; TPS AE is the initial squirt that keeps the =
mixture=20
from going badly lean with the sudden availability of air when you nail =
the=20
throttle.&nbsp; MAP AE is more to help smooth the transition from =
low-load to=20
high-load and consequently help the engine accelerate more=20
smoothly.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Both types of AE are used any time you =
open the=20
throttle.&nbsp; TPS AE is very quick, while MAP AE stays around a little =

longer.&nbsp; If your datalogs show a lean spike when you kick the =
throttle, you=20
need more TPS AE.&nbsp; If it's less spikey and feels more like a lean =
bog, give=20
it more MAP AE.&nbsp; Most of the time, if you have to increase one, =
you'll need=20
to increase the other as well.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>This is just my experience, which =
admittedly isn't=20
very extensive.</FONT></DIV></BODY></HTML>

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