Bit the bullet and ordered Double R Diesel full tuning package for my MM3. I originally had emissions compliant tuning from another company and had some issues, was never really happy and if never really even felt all that different from stock.

After dumping all that money out the drain here I am at 6k miles and tearing my truck apart .

- How difficult is it to remove the exhaust after the turbo?
- I ordered a 4” delete pipe that eliminates the cat and DPF. Any special tools or techniques?
- About how long should it take on my back in my garage with hand tools and beer?

I’m very mechanical with a plethora of tools, I just want some advice from you pro’s out there in Cummins land as this is the first diesel mod for me.

Truck is a 2018 2500 crew cab AUTO.

THANK YOU GUYS IN ADVANCE.