Replaced my EGR valve yesterday and man it was coked to unbelievable levels, damn thing was almost gunked over. The truck has the stats in my sig so it was sort of expected to see this degree of muck on it which is why I replaced it.
Anyhow it got me to wondering about what else could have 1/2" of crud on it, what else should I be looking at replacing or cleaning?
2004 CC-SB 4x4 King Ranch 8" Skyjacker 17" MT SideBiters, 37" MT Baja MTZ's, Road Armour front and rear winch bumpers, PIAA lights all around, Thule Racks, SCT Livewire IDP Tuning, EGR and Kitty Delete, Under Armour and Wounded Warrior Project Wrap
You bet you're loosing performance! coking of the intake, deposites on the valves, etc. you should be running the motorcraft cetane booster, and dont be afraid to kick that think in the rear end, um, I mean after you've deleted or upgraded the EGR cooler, and installed head studs, lol