I have 08 CRD. I am running a yeti tune. Yeti tune Costs $150 Euro. You have to by KSSS tool from ebay at $120. I asked yeti to make two tunes for me
(1) Factory tune with EGR off
(2) Tune with extra power with EGR off
I always run factory tune with EGR off makes a huge difference to up and go. The tune with extra power makes the jk go faster but fuel consumption is not great, so I only run it when required. Basically, the extra power reduces the need for regearing if you are running larger tires.
You can reach Marco here
https://www.facebook.com/YetiChiptuning/