A friends of mine brought me his truck with an issue of occasional loss of accelaration/power. Truck is in tip top shape and has had all filters and fluids chaged. Injectors serviced and some other preventative maintenance taken. Occasionally while driving power is restricted feeling like the intake is being choked somehow. After a while alittle white smoke and it'll clear up. Problem does seem to be getting worse. Not looking to delete the egr if not necessary so the

This is a brief video of the issue.
vehicle can remain smog legal.