Mag's OSE 12P Thread

[VL400]

Thats good news mag. You should be able to calibrate the diy against the genuine 2 bar using the wideband input.

[Jayme]

I wonder what the effect of setting "Baro params - Maximum MAP offset for baro adjustment" to 0 would be. it is 11 by default. to me it sounds like the max that the baro can change from startup.

[VL400]

Its something I have on my to do list for the code. In the mean time i will post a bin that has a temp fix. Just means that baro wont be updated during run if your using a 2/3 bar MAP sensor.

mag - the baro changes under a few conditions. It will always reset to the highest 1 bar map value the sensor reads, it will also try and learn the baro by looking at RPM and TPS - when RPM is less than 3600RPM and TPS is greater than 37.5% it uses the table called "Baro - Baro params - Baro Adjustment offset to MAP A/D reading vs RPM & TPS" to offset it. The offset cannot go beyond the value jayme mentioned "Baro params - Maximum MAP offset for baro adjustment" . So while you have not changed in altitude the learning may have caused it to change. Clear the baro adjustment offset table or the max offset and it wont change to anything lower than the highest the sensor reads.

[mag]

A question for general dissussion, had considered using engine load (MAP) & RPM as the criteria for engaging the clutch on the SC14 via flexible output, however after more thought, it might be better to base it on RPM vs TPS or MAP vs TPS.

also have found that I cannot have MAP value greater than 100 in flexible output axis setup, if I was to use MAP vs RPM, how do I include MAP greater than 100kPa to keep the clutch engaged during boost.

[VL400]

I'd prob make it engage on RPM vs TPS.

I will address the MAP issue in the next flashtool update, it uses the actual MAP A/D so when using a 2/3bar sensor the 100kPa value is actually going to be 200/300kPa. Its just a axis display issue and you can manually scale the axis by editing the XDF if you want.

[mag]

a question regarding VE learn, looking at setup paramter values would expect VE learn to be active during steady highway cruise. is this true & does the ALDL status "Learn Control Disabled /Enabled " refer to the bin setting or the actual ecu mode.

[Holden202T]

ve learn will be active whenever it sees a target AFR of 14.7 assuming the engine is up to temperature and all that stuff.

i think the learn control refers to blms ?

[VL400]

Mag: exactly as holden202 has stated. If learn control is active then it means VE learn also has a chance of working - provided all its specific parameters are set.. Watch out for lean cruise at steady highway speeds as this modifies the target AFR.

dec_head: BLMs work together with the INT value, in simple terms you can refer to the BLM as the long term trim and INT as the short term trim. When the INT value varies by a preset amount the BLM value gets modified accordingly. When entering a mode that will change the fuel pulse width without adjusting the target AFR it would be a good idea to reset the INT value so the BLMs dont get all screwed up. The same goes for when the BLM changes, you want to reset the INT so it can start 'learning' again with the new BLM value.

[mag]

more questions on ve learn & blm. so TP RT logged "learn control" status is dynamic, it indicates whether the learn process is on or off? my logs only have irregular flashes of "learn control enable" & was wondering how best to determine if it is operating correctly, other than uploading the cal & comparing ve values. what are best driving conditions to get staedy ve learn processing & therefore a steady indication in a log.

how does ve learn & blm interact.

[VL400]

Learn control DOES NOT mean VE learn is working. Its for BLM learning. Release of 12P V104 has a flag when VE learn is active and is actually learning. When VE learn option is enabled, all the parameters relating to VE learn are met (check them out in TP) and target AFR is 14.7:1 it will learn - the best driving conditions are those that meet all these conditions.

BLMs and VE learn dont interact, BLMs are disabled when the VE learn option is enabled.