I am trying to scale my FIC 1450 injectors but am having a little trouble. When I get my mid fuel trim dialed in my low trims goes out of the 5% range. When I fix my low then my mid goes out of range. I have done dozens of changes to both the injector scaling and the latencies. I have also searched and tried different things from the searches but still no solution. Any help would be greatly appreciated.

 

bump

 

anybody??

 

Forum member "Jhon Bradley" has some good threads on how to manage bigger low impedance injectors, from what I've heard it can be a bit of a PIA.

Another solution is the high impedance Bosch injectors sold as ID or FIC 1100 or 2000 cc injectors. They tend to idle and drive nicely while still providing plenty of fuel. I would avoid the ID 1000's as they can have starting problems.

They also respond well (flow more fuel) if fuel pressure is raised.

 

Match up your WOT fuel table with your wideband by setting the injector size, then adjust latency to get your partial throttle right. It's not going to be perfect everywhere.

 

If you are having a problem getting both fuel trims to match using the latencies and scaling using the proper method, then you can also use your maf smoothing for fine tweaking.

 

alright thanks guys, will work on it some more.