f 250 down in power got multiple codes

[msmechanical]

hi there guys
got a f250 .4 model 6L turbo diesel in today down in power,,
i only have dcx so using my snap on scanner i extracted the following codes
po 261 cyl 1 inj circuit low
po611 FIC module performance
p2138 thr pdl position sensor/switch d/e correlation
p2140 tp/app sensor switch E/F voltage correlation

now here is the twist he had a predator that he returned to someone in melbourne who APPARENTLY took out 100hp (LOL) because it would CUT out when u drove it hard,,, maybe this story rings a bell it is possible i suppose..
basically are there any common issues u guys know of that would lead to this scenario are these issues related or can i treat them as individaual and start changing parts????
cheers all!!!!!

[mikel]

Thats new, what is the revision on the Predatorand the calid of your truck?

[msmechanical]

no mikel i have no predator for this truck ,,, its just a customer who wants his truck to rev ,,, i posted this as i know nothing of these trucks they are very rare here ,,, just incase there wer common issues with these trucks ,, im assuming the truck had a tune,, the trucks gone wrong and now hes trying to fix it ,, as i said ,,, i only hadve dodge software and he has given a predator back to someone in melbourne who i assume sent it to him to do diagnostics and possibly upload a tune to try ,,,,
actually i have u900 predator units can i only use them on chrysler dodge?? sorry to burden you mikel but although owning cmr for a long time i have done nothing except the blown srt8 .... i have yet to open the boxes
cheers !!!

[msmechanical]

bump