Stage One Suggestions

[Tdubb]

I have a stock '08 Mastiff EFI. Any recommendations for a stage I set up?

 

[KaptinAmerika]

Put An S&S Non-epa 124 With EFI and Programmable Ignition In it
That 08 117 isn't Designed For Engine Mods Its Designed To Meet Epa Regulations

 

[Diesel Dan]

A nice mod for sure but expensive.........124 has massive power...hold on brother: