Quote:
Originally Posted by steve99
OK if trims gone positive then its adding fuel to compensate when we switched in heaps more port , so we assume the port injectors were not adding as much fuel as the directs did.
So I think we need to make ports add more fuel.
In a petrol tune Inj scale BRZ (port) is 228
In a E85 tune its 171
So looks like lower number means more fuel.
Shiv added roughly 30% more fuel in E85 tunes so it looks like if we moved the injector scalar 2 it would equate to roughly 1% change in port fueling.
So if we want to add more fuel as the trims have gone up say +4% we need to move scalar down roughly 8. Its not going to be exact as we did not go from 0 port to 100% port but should be in the ballpark.
I would not go wildly adjusting the scalar though.
To do it correctly you would have to go 100% direct (whole map) make sure trims are good, then switch to 100% port and adjust scalar to get it as close as possible to what you got trim wise with 100% direct.
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Why do they not react appropriately when we change ratios. With more pfi the ecu should have added the right amount of pulse width I would assume
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