I can't get pulse width low enough on siemens/mototron 60lb injectors

[BLK02WS6]

Will this help me at all with 96#ers running on a versafueler? Trying to tune one for a friend and having a tough time getting it to lean to a reasonable idle AFR...
Thanks,
Bret

[5.7ute]

Not sure what you mean by a versafueller.
If you have a tune file & log with IBPW1 or 2 post it up.

[BLK02WS6]

Versafueler is an injector driver for low impedence injectors.

Here is a log and tune file. I made some changes trying things after this one, but they are on my tuning laptop. Also, the car doesn't have a speed sensor yet, so you have to look at the TPS to see when I was sitting idling or rolling. I was trying to use SOL (STFTs) to lean it out during this log. At least you can see what I'm working with. Thanks!

[joecar]

If you have an adjustable FPR, you can try reducing rail pressure (to say 3 bar) and rescaling IFR.

If the FPR is manifold referenced, measure the rail pressure with the reference hose temporarily removed (i.e. FPR open to BARO).

[5.7ute]

The ETC's are high in that log. I guess there is no real cooling system present.
Where did you get the injector data from in regards to voltage offsets etc? They look very high to me. (not saying they are wrong just look high).
B9021 is set standard & may be contributing to your issues. I will clean up the .cax & post it shortly.

[BLK02WS6]

If you have an adjustable FPR, you can try reducing rail pressure (to say 3 bar) and rescaling IFR.

If the FPR is manifold referenced, measure the rail pressure with the reference hose temporarily removed (i.e. FPR open to BARO).

Tried lowering pressure, and it didn't really effect AFR much at all... went down to 45 pounds from 60 and it leaned it out about .5 AFR average.

[BLK02WS6]

The ETC's are high in that log. I guess there is no real cooling system present.
Where did you get the injector data from in regards to voltage offsets etc? They look very high to me. (not saying they are wrong just look high).
B9021 is set standard & may be contributing to your issues. I will clean up the .cax & post it shortly.

It was having major cooling issues - they have worked on that, but it still runs hot... I could only run it a few minutes before - made it hard to make any progress.
They are working on a new radiator setup (turbo car without much room) now, but I wanted to do some homework and be ready when they get it running again...

The injector data was some I found from someone on here or tech - as close to the injectors that I could find. Do you have any other sources for that data? I'm having a hard time with this car all around...

[BLK02WS6]

Can you tell me where the instructions are for the .cax file? I have never used them before... Thanks again for all the help!!

[5.7ute]

Just unzip that file into your mycomputer/c:/program files/efilive/v7.5/calibrations folder. Then next time you open the tune file the new parameter {B9021} will be in the injectors/parameters folder. (or you could just search for B9021.)

[BLK02WS6]

Just unzip that file into your mycomputer/c:/program files/efilive/v7.5/calibrations folder. Then next time you open the tune file the new parameter {B9021} will be in the injectors/parameters folder. (or you could just search for B9021.)

Thanks -just found the .cax thread and the instructions - done and I can see it.

Any input on my comments above? I'm in uncharted territory for me... I've gotten 42# and even 60# pretty good, but these are looking to be tough.