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I had one on my 04 Cummins. It did do a lot. Tore up fuel rails.BC I didn't listen about turning it all the way up while towing.
Other then that few upgrades plus the chip I got over 20mpg. And the power was enhanced when I put it on
Lol you have got to listen to what they say!
They dont lie when they say that you will tear something up.
Has anyone paid for the HOT unlock Code??
And when you repaced the fuel rails did you go bigger???