Maf Fueling
PE is the commanded airfuel ratio, the MAF is the airflow value, from 4K up it is used 100%, below that, it can blend based on transient factors.
(or you can set the threshold lower, and be all maf based from a lower rpm
)
Ryan
(or you can set the threshold lower, and be all maf based from a lower rpm
)Ryan
no, PE is just the commanded airfuel ratio at high power demands (power enrichment) and at WOT regardless of RPM (assuming all rpm/time limiters have been meet)
There are 3 variables, or systems your working with
Airflow, Desired AFR, and Fuel Flow.
Your airflow is VE/MAF below 4000 and above 4000 it is all maf
The desired airfuel can be one of several things, OLFA (open loop fuel air table) table, Closed loop (stoich based on O2 sensor data, then altered by fuel trims) and then PE for WOT operations.
Your airflow data combined with the desired AFR will determine what you want out of the motor, and then the fueling calculation will change this airflow and desired lambda to a injection event time to put the fuel into the engine.
I hope this helps
Ryan
There are 3 variables, or systems your working with
Airflow, Desired AFR, and Fuel Flow.
Your airflow is VE/MAF below 4000 and above 4000 it is all maf
The desired airfuel can be one of several things, OLFA (open loop fuel air table) table, Closed loop (stoich based on O2 sensor data, then altered by fuel trims) and then PE for WOT operations.
Your airflow data combined with the desired AFR will determine what you want out of the motor, and then the fueling calculation will change this airflow and desired lambda to a injection event time to put the fuel into the engine.
I hope this helps
Ryan
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Verdad Gallardo no, PE is just the commanded airfuel ratio at high power demands (power enrichment) and at WOT regardless of RPM (assuming all rpm/time limiters have been meet)
There are 3 variables, or systems your working with
Airflow, Desired AFR, and Fuel Flow.
Your airflow is VE/MAF below 4000 and above 4000 it is all maf
The desired airfuel can be one of several things, OLFA (open loop fuel air table) table, Closed loop (stoich based on O2 sensor data, then altered by fuel trims) and then PE for WOT operations.
Your airflow data combined with the desired AFR will determine what you want out of the motor, and then the fueling calculation will change this airflow and desired lambda to a injection event time to put the fuel into the engine.
I hope this helps
Ryan
There are 3 variables, or systems your working with
Airflow, Desired AFR, and Fuel Flow.
Your airflow is VE/MAF below 4000 and above 4000 it is all maf
The desired airfuel can be one of several things, OLFA (open loop fuel air table) table, Closed loop (stoich based on O2 sensor data, then altered by fuel trims) and then PE for WOT operations.
Your airflow data combined with the desired AFR will determine what you want out of the motor, and then the fueling calculation will change this airflow and desired lambda to a injection event time to put the fuel into the engine.
I hope this helps
Ryan
do your VE then your MAF.
DO NOT set your PE to 14.63AFR for VE tuning.
when you are done with your VE table
re-enable your MAF in open loop and set {B0120} to 400RPM
and depending on how many mods you have,
you will possibly need to raise the whole MAF table by X%
watch your WBO2 at first idle to get an idea of how much.
DO NOT set your PE to 14.63AFR for VE tuning.
when you are done with your VE table
re-enable your MAF in open loop and set {B0120} to 400RPM
and depending on how many mods you have,
you will possibly need to raise the whole MAF table by X%
watch your WBO2 at first idle to get an idea of how much.
Last edited by shoemike; Jan 22, 2008 at 09:08 PM.
Eurospec2-I believe hptuners
Here's a good read jpr about fueling on LS1's that everyone could benefit from reading http://www.hptuners.com/forum/showthread.php?t=2359 its an oldie but has all of the info you desire.
Thankfully since you already own tuning software most of the boundries(as explained by slow) can also be altered.
Here's a good read jpr about fueling on LS1's that everyone could benefit from reading http://www.hptuners.com/forum/showthread.php?t=2359 its an oldie but has all of the info you desire.
Thankfully since you already own tuning software most of the boundries(as explained by slow) can also be altered.
