03 195,000 just installed 8 inj, oil cooler, blue spring, cleaned turbo. fired her off last night and went for a spin, ran ok till shifted in high gear and started running rough, no power. checked codes and was showing p-282 and p-284, 282 is inj. circuit low #8 and 284 is cylinder 8 contribution/balance fault. I checked connection on 8 and it was loose, plugged it in good and test drove, prob cured, ran smooth. It's still showing p-284, what does that mean? The engine is running strong and smooth.