Hello, hoping someone can help. I have a 94.5 that I have owned for many years. It has a TS6 chip and stage 1 absolute diesel injectors. Both have been flawless for years. Recently the check engine light will come on, it starts running rough, and it will just barely rev when pushing the accelerator. This happens randomly. Usually it will start back, but not always. I replaced the cps but that didn’t help. Can’t pull any codes either. I’m at a loss on where to start.