Disable DOD

[dporter]

Has anyone disabled the DOD on their 5.3 engine. I have 130k on my 07 Denali and it runs great and gets 21.5 -22 on trips. 18 -19 around town but I can tell its in 4 cyl mode at about 30mph under slight load. I hate that 4 cyl feel. I would like to run all 8 for awhile to see the mileage difference. I just replaced the plugs at 130k and I can tell the plugs that were shut off when DOD is activated.
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[jimmyjam]

HP Tuners can disable as well as modify entry conditions
If you can find a buddy with HPT it'll cost you $100 for the credits. or you can do it mail order through someone like PCM of NC for a little more