The Superchips Cortex 3950 is still a programmer...It works within the ECM and reprograms. As Squid said, Dodge is working hard to eliminate programmers. Some 09's can still be reprogrammed but, the first time your bring it in, Dodge will download the "Bootlegger" software and render you Cortex unless. This applies for 07 and 08 as well. Since the Cortex also works on all other Dodges, gas included, it still has market value. I recommend the Edge which does not change the internal programming...Squid can give you more info

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7.5 3500QC 6.7CTD 68RFE Build date June 2007
Superchips tuner 3808, Boost/EGT Laser Gauge, Airaid cold intake