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Old 01-20-2017, 03:03 PM   #744
Dan in Pasadena
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Join Date: Nov 2008
Location: Glendora, CA
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Re: My long term 57 project

Quote:
Originally Posted by 47 Fasttoys View Post
"Displacement on demand is what GM calls "VATS" i think. Yes, it gets removed" Actually DOD is a system in which GM cuts off 2 or 4 cylinders by lowering oil pressure to the lifters for those cylinders. VATS is Vehicle Anti Theft System. Vats must be removed in a computer re-flash for a stand alone set up. DOD on the other hand requires changing lifters and a reprogram. Some other things may also be involved in removing DOD.
Rob
Yes you're right of course. I got my acronyms confused.

PS: Why would you hve to replace the lifters if you're NOT going to use DOD? Seems the engine would just run like it ordinarily does when DOD is not in use?
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