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Factory flash

grasshopper645

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2006 VZ SS Ute 6.0
Got a VZ SS ute (6L) and appears a previous owner has flashed some custom tune on it. From what I can tell its got no mods other than a cat back so I'm wanting to put it back to stock to hopefully improve the fuel consumption slightly.

Can I flash a factory calibration onto it using and MDI2 and TIS2WEB? Have heard some comments about TIS2web not allowing a flash if the ECU tables have been modified? is there any truth to this?

I guess i should take a backup of the tune incase there are other mods that I'm unaware of.
 

Skylarking

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You sure there are no internal mods, maybe a different cam and rocker ratio while externals were all kept stock?

Can’t you contact the previous owner and ask what was done to it?
 

harrop.senator

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Custom tunes are usually more economical then factory. How bad is the economy? Are the plugs fouled? Cleaned the mad? 02 sensors original?
 
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