ECMlink FIC 1680 Scaling Trouble

[91TurboZ]

I recently picked up and installed a set of used FIC 1680 High-Z injectors (as well as a resistor pack delete plug), but I'm having trouble getting the injector scaling to a value that makes sense. These injectors had been cleaned and tested by FIC on 7/1 (see the attached pic).

I started out by setting the InjBatteryAdj to the values specified by FIC, zeroing out global deadtime adjustment, and setting the global fuel adjustment to -73.5%, however the car would not start with these settings. I didn't really have any luck until I started significantly raising the global scaling. I'm currently running a -62.1% global and the car idles and cruises perfectly. The trims are in line and the airflow per rev is around where I would expect for a 2.3. I wondering why the scaling is so high for these injectors. -62.1% would be what I would expect for about 1100 cc/min injectors. I did check my fuel pressure and even set it slightly higher to about 45psi.

I have attached an idle log. Any suggestions would be greatly appreciated.

For reference, I am running V3 full, speed density with the flex fuel sensor. I had been running e85, but filled up with 93 to help set up the injectors. I was running the flex fuel sensor with my old 850's and did not have this issue with them. Other mods are in my profile if needed.

 

[c2ypt1c]

Try setting your loadscale in direct access. Read the desciption in ecmlink for what it should be for a 2.3 motor.

Also, you might want to disable the ethanol sensor (in aux maps). I doubt it will affect anything because a sensor is required...but just to rule it out.

 

[91TurboZ]

Thanks. I didn't realize there were multiple places to scale for the 2.3. I'll do that tomorrow as well as disabling the fuel adjustment and post back.

 

[91TurboZ]

Okay, I was able to adjust the loadscale today and disabled the ethanol sensor adjustment. I set the loadscale to 87% and re-tuned idle. Airflow per rev hoovers around .30 - .31. and my fuel trims are within 5%. I had to bump my global up since the ethanol sensor was no longer compensating for the left over e85. The global is still way too high for 1680s. I had contacted FIC and they verified that the injectors were 1680's so I'm not really sure where to go from here. I have attached an idle log from today.

 

[TalonSpeed]

FIC 1680s had a problem where the would flow a lot less when fuel temps got high. I got my 1680 cleaned by FIC and they came back 1600cc. I am having problems with mine too ( http://www.dsmtuners.com/threads/fuel-trims-jumping-around.483269/ )