Wow, nobody.
Well I ended up getting Liquid Moly cleaning solution.
It comes with a nifty hose with a jet on the end that sprays the
solution out of 8 holes at 90 degrees from each other.
I took the EGR tube out of the manifold and cleaned through it.
Since I didn't have anyone to run the throttle I had to do it at idle.
Since the engine stumbles when the cleaner is sprayed into the manifold. BE CAREFUL!
Mine backfired and could have done damage. So short bursts of cleaner at a time.
Has it helped. Nothing I can tell yet. I was trying to return my fuel mileage to pre AEM
tune standards. So my truck gets it's best fuel mileage around 50mph, maxing out at 24MPG
At highway speeds my mileage drops to 22MPG
...mor to come...