I need some input on a tbi swap my dad and I have done. 1983 c3500 originally had a diesel engine. we bought it with a carburetor 454 already in place. Decided to go fuel injection, bought everything from a 1993 c3500 454 tbi. Installed this combo, and truck ran just fine. Fast forward a year, Dad decides that the turbo 400 needs to be replaced with 4l80e. I found a new 95 ecu and prom for 1995 454 4l80e combo. Re-pin ecm connectors to 1995 schematic. Now truck will idle, but when you increase rpm, it falls on it's face. Injector pattern goes from nice open cone to a tight cone, looks like it is dumping fuel. Not sure, but am thinking that the 95 ecm is supposed to control bigger psi injectors, not the 9-13 psi it has now. So....need to know if I should swap the 93 fuel delivery(injectors, regulator, pump) to a 95 30 psi set up. If so, are the 93 injectors physically the same as 95 injectors, or do I need to find a 95 injector pod?? any advice appreciated.