Hondata

Hi there, never had this problem before , tuned plenty cars with s300, never understood how exactly works when you tune it in open loop and when switch to closed loop i have to retune almost everything at low range mainly but well this is not main problem, i cant see anything wrong unless basemap p30jdm isnt going working good, dont know why, when turn headligh, or fan is on,etc afr goes crazy lean..18-20s dead times are correct, used hondata pre-settings and even used dead times from another website injector specialist , never worked, car is almost tuned, just want to works in low range mainly but i need to get close loop working for MOT. of course wideband is set it up right, readings are almost same ,etc. eveerything should works but for some reason this car goes crazy, i thought maybe it could be fuel pump problem or fuel press regulator but tried another plug and play obd1 ecu, and there is not problem. Any input please will be appreciate it a lot.

i have to add too, worked a lot for rate of change, fuel compensation in open and close loop,etc. i tuned a lot of this cars, never had this problem before with electrical load, about close loop, as said, still dont understand method how it works exactly in hondata but it can be tuned and works good. thanks!

switch to close loop, compensation are zero. shoulnt short trim just will compensate difference from open loop to close loop ? https://www.youtube.com/watch?v=Uq_38ew0mYI

https://www.youtube.com/watch?v=cDIeUxOEGOw
you can see at the end, afr ok ,around 4-5 % short trim/ zero long trim

https://www.youtube.com/watch?v=RbFJ5FoSr7U
still same fuel values, nothing changed and looks now short and long trims.

It's not a fuel pump or whatever, as said, yesterday tried another different ecu, just did a basemap for starting , using same deadtimes, for 1 hour almost, everything worked good, whats why i tried another ecu, for to know if maybe the problem is something fuel related of the car but it doesnt.