HI,
Before I install this thing, I need to know if it goes over the factory cover or do I remove it first.
The instructions that cane with it are less then helpfull.

 

I have the same exact thing (except mine is single pod...) anyhow I just slipped it right over the factory cover and it fits fine. I diddnt even drill I just used the double sided tape provided.

How you like the cummins 600? I havent gotten a chance to put my boost guage in yet because im trying to decide if I want to send my boost guage back. I got the one that reads vaccum and boost by mistake. I think I want the Boost only guage though. How much boost you make?