My EGR appears to have charring on the bottom side of the diaphragm. Is this normal on this engine? (97XXX miles)
The car on the highway, at full 15psi feels like it falls flat. It initially accelerates then feels like you back out of it half throttle (boost gauge goes to 15 and does not fluctuate). No codes other than AC command.
No detonation detected while this happens. All other gears feel fine. I know there is a huge load in 5th gear at 55mph when at WOT, so this behavior may me normal.
Thanks,
Dan