The truck is at 280,000mi and has had multiple IPs and injectors over its life time, according to the PO. When I got it it had a bad misfire and smoked like crazy. I replaced the bad injector (Napa) and although better, its still not right. Do I need to invest in Injectors/IP from type4 or am I missing something? Both of these videos were taken after a 15-20min warm-up drive. It blows white/blue smoke like crazy above 1500rpm.