Dave,
My setup should use Load=BAP/MAP XOver, its a turbo motor at 28psi.
The problem im running into is that at altitude its not compensating (the baro does show the correct pressure compared to my weather station). Im currently using Load=MAP but the motors idle quality is poor and selecting "Map" or "MGP" as the 'y' axis results in very poor idle fueling. Plus making manual trims to the fuel table is not the best and your always chasing the weather.
What I've done in the past using Motec ecu's was TPS on the Main fuel table as the 'y' axis. and used a baro comp and a map comp to make altitude and boost pressure fuel changes. This has worked very well for me.
I also run an alcohol sensor in the fuel system and measure my alcohol content in the fuel. This allows me to run race gas or alcohol or a mixture of either and not have to re-trim the fuel table or send a new config to the ecu.
Since the 4d & 5d tables do not allow a value greater than 60 (I belive, been a while), I cant do a Map comp using those tables. For example for the Map:
MAP KPA | 0 100 200 300 400 500
Fuel Trim % | -100 0 100 200 300 400
These values are not allowed.
How have you used the Load=BAP/MAP XOver fueling equation?
Has anyone else ran into the 4d and 5d table values as being an issue?
Would it be possible to add two tables to the software for dedicated Baro and Map trim tables or allow the 4d and 5d tables to accept values greater than 60?
The help file says:
The best way to use this mode is to span the main fuel table using TPS. Enable the 4D fuel table and span its Y axis using MGP. Set the Y Axis to start at 100 and ensure that all numbers in the first row are 0. This gives BAP correction over the entire operating range and allows fuel trimming under boost.
But you cant enter a value that high ( cell value must be between -60 and +60 ). So does that mean this table is scaled? I would love to see someones config that was successfully using this method. Or even a startup config used for new setups using Load=BAP/MAP.
Thanks,
Rob