I recently changed out my injection control sensor at it was throwing the code. Now, my truck runs fine, idles @ 560ish. I hear the injectors cycle properly and fast which is expected. The truck runs smooth, however, it does seem to be a tiny bit low on power and the idle seems to be a bit lower than before I changed out the injection control pressure sensor. I have an EGR delete, Atlas tune from Ed @ FICM repair, Sinister coolant filter, and cat deleted.

Some interesting things here.
My FICM volts during start up via Tuner Pro RT = 48v
ICP is over 500 upon starting so it starts fine, however idle seems a bit low
In Tuner Pro RT, I get only the P0263 code.
I connect my Blue Driver OBD scanner (supposed to be very good for pulling all codes) and I get P0263 and 0281. Cylinder 1 and 7.
I also get both codes with Car Gauge Pro.

I connect the Car Gauge Pro app and I am supposed to be able to do an injector Buzz test, but my buzz test is incomplete.
The program will buzz the injectors for the initial buzz, however, that's all that happens. The buzz test normally will get all the injectors to buzz through a cycle, then go through a single buzz for each of the 8 injectors. Mine is not going thorough the individual injectors. The Car Gauge Pro app buzzes all injectors and then says "unknown code, please wait" and nothing happens.

I went out, cleared the codes and tried to run the buzz test again on Car Gauge Pro with no changes. Idle is between 620-730 rpms, HPOP is around 700psi. It does sound like there is a slight miss @ idle.


What should I do from here?