Is OLFA table used for any normal operating conditions ?
Is OLFA table used for any normal operating conditions ? I'm wondering if there are any normal conditions where this is used ? Not talking about during tuning and you have LTFT turned off ? What is this table used for under normal conditions ?
the table is used on a cold start while the car is warming up. it adds fuel to the mixture based on the multiplier...normally on a cold startup it needs more fuel to achieve a proper fuel mixtureand to run properly (or atleast that was my understanding of what happens in a cold engine)...esentially it is an Electronically controlled fuel mixture doing the same purpose as a choke and venturi would on a carbuerater..only instead of mechanical...it just adding fuel cause it needs more fuel on a cold start
Originally Posted by TRex
Ok, that makes sense, is it used for anything once engine is up to operating temp ?
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because in those cold temperatures it may be needed in some vehicles that dont have a PE multiplier based on ECT...
when entering PE your car uses what ever value is the Highest..and if OLFA is commanding 1.17 and PE is onlt 1.13..then it uses the 1.17 value from the OLFA
again this is because not all vehicle OS's have a PE Multiplier based on ECT
when entering PE your car uses what ever value is the Highest..and if OLFA is commanding 1.17 and PE is onlt 1.13..then it uses the 1.17 value from the OLFA
again this is because not all vehicle OS's have a PE Multiplier based on ECT
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Originally Posted by oange ss
so would it be safe to place OLFA cells at WOT to 1.00 to allow PE full time control of WOT fueling
p.s. sorry for the hijack
p.s. sorry for the hijack
not safe...unless your PE multiplier vs ECT is Tuned in properly
and its not based on Fuel Trim cells...its based on MAP...
MAP of 80 does not necessarily mean PE
PE is enabled by MAP and Triggerd By TPS vs RPM
there is a reason for this table..why do you want to defeat this reason?
The table is used -conditionally- during all open loop
operation. PE/WOT is one open loop mode that is
accessible by pedal. If this table is the fattest then
it will be used at WOT. If something else overrides it
with heavier fueling then it will be ignored but this
table is your "bedrock" enrichment and should be
made like you meant to use it.
operation. PE/WOT is one open loop mode that is
accessible by pedal. If this table is the fattest then
it will be used at WOT. If something else overrides it
with heavier fueling then it will be ignored but this
table is your "bedrock" enrichment and should be
made like you meant to use it.
Originally Posted by jimmyblue
The table is used -conditionally- during all open loop
operation. PE/WOT is one open loop mode that is
accessible by pedal. If this table is the fattest then
it will be used at WOT. If something else overrides it
with heavier fueling then it will be ignored but this
table is your "bedrock" enrichment and should be
made like you meant to use it.
operation. PE/WOT is one open loop mode that is
accessible by pedal. If this table is the fattest then
it will be used at WOT. If something else overrides it
with heavier fueling then it will be ignored but this
table is your "bedrock" enrichment and should be
made like you meant to use it.
Originally Posted by soundengineer
henceforth why I am working on a writeup of how to tune the OLFA Table
-Josh
Originally Posted by soundengineer
henceforth why I am working on a writeup of how to tune the OLFA Table
Funny cause i was gonna post a question about this yesterday 
