So i got some ford/bosch injectors 0 280 158 117 (0280158117) which i'm trying to use with the E78 ECU on the 1.4T engine.
All the data i find on the internet isn't helpful at all, and the car doesn't seem happy with anything i try.
Here's the current values which work, there's no stuttering and the wideband seems to follow commanded pretty okay.
There was also a problem with the short pulse adder, the values in this table are basically random right now.
It used to "misfire" and basically stutter when WOT at about 1500 RPM and up. That showed up as a lean spike on the wideband and sudden vehicle jerk.
But that's fixed now. I think there's a bug with HPTuners here, as this table seems to be offset by 1 compared to older operating systems when comparing the stock data.
The Injector Pulse Width in the log is of no help at all.
a.png
b.png
Except there's a problem with cold starts and idle.
On cold starts it's running leaner, and that's okay. But the car is basically undrivable the first minute until it warms up a bit.
It seems like it runs in two "modes".
Cold starts are okay in the first one where it's basically dumping more fuel than required, but then it suddenly switches to some "lean" mode and AFRs go way above 15-16 and it starts stuttering.
This is what it looks like when the car is warmed up. The "lean" mode (right part of the graph) follows the 14.7 AFR commanded just fine, but the rich mode makes the car idle at 13 AFR.
What's going on here?
c.png
They switch every once in a while, it's either too rich or running at stoic.
Maybe it's catalyst related? But i can't find any place to turn it off.
Tune and log
CorsaE14T2019_Injectors.hpt
injectors_7_300_wb.hpl
My injector calculator helper spreadsheet
FuelInjectorCalculator.xlsx