Bank to bank fuel trim variance

[Tuppidsay]

Having this annoying issue of split fuel trims. Most notably while in boost. Almost a perfect split of about 10%. Equal at idle and cruise.

This is after engine replacement. Before engine replacement at 26 psi and on meth they would split too but 2-3%, no biggie. But 10% at low boost and no meth I'm not willing to turn back up untill sorted.

New upstream oxygen. Sensors, new intake gaskets, ~1 year old #12 injectors, new seals on The injectors when transfered to the new engine, new plugs, pr coil kit, meth is turned off currently and jb4 map1 with bms back end.

Any help will be much appreciated!

 

[silverstreak18]

Swap Bank 1 injectors with Bank 2, recode and check to see if the trims stay on the same bank or move with the injectors.

 

[Tuppidsay]

Weirdest thing. Swapped them bank to bank and the problem went away. Max varience is now around 3%. i checked injector coding before touching them to verify they were coded right to begin with. coding was correct. and correct now after swapping. truely weird.