After stupidly using so call DPF safe intake cleaner, this had less than ideal results, for those with a DPF - DO NOT USE as this will essentially just block your DPF as I have found out the hard way,
So now I Have just finished a complete Intake clean, this is the full EGR & intake off the head, this was quoted at around $1700 to do & after doing I can see why, none of it is easy to get to, it is not for the feint hearted or non-mechanical folk, its a total %&$#@ of a job....
I will say though now it is done I am glad I done this as
1, know a lot more about the 1GD-FTV & where things are & go
2, There was only a little carbon build up in the EGR system, a lot less than i expected, but the intake manifold was caked with the horrible black sludgy Sh#t, this stuff is terrible and hard to clean, but there was a lot of it the flapper valves on the intake manifold were all blocked up and the head had a lot in the ports, this was all removed.
All gaskets were replaced and the critical fasteners torqued to spec.
now the engine does seem peppier, I have had the EGR tuned off in the ECU when it was tuned & run a Catch can so this should never happen again.
Now need to do a Regen on the DPF (DPF full on dash) & hopefully all sorted and get some improved fuel economy.....
I will post some Info , Pics & details on the clean soon for those wanting to do.