So I put all my mods on truck was running awesome lots of power. Blew my oil cooler and head gasket. Took it in got arp head studs installed. They lifted my cab. Got truck back was running great. Drive it 1200k (Canadian). Start Loseing fuel presure. Then it hits 15. Psi and starts and studders when the chip turn on. Check inline pump harnes find blown fuse replace it. Runs good. Now. I've got companion module codes. Injection death code. Had set inline pump presure to 19psi. It's now dropping down like it was before the fuse went. Shut it down. And here I am. Could my chip be . From taking cab off. I'm going to check fuel filter. Any suggestions or ideas. All the mods only have 5000k on them max.

 

Check for ant fuel leaks, and filter. Cheap could be causing your problems.

 

You could try removing the Chip, and running it like that. That will tell you if it is the chip or not.

Finding out why that fuse blew would be good. They don't blow unless something is drawing too much current. Bad motor would be my guess at this point.

I'm confused why the lifted the cab, it isn't necessary.