Fuel Economy

[blit182]

I have the Predator installed in my 2005 GMC Sierra HD, I was told that I'd save on Gas milage but I notice I'm getting 2-3 MPG less now??????? What is the possible problem?

[mikel]

Are you reading this on the DIC or measuring this yourself. The info in the DIC is incorrect once the tune is installed.

Thanks

[blit182]

I used both.