What upgrades next
#1
What upgrades next
I have A 2004 duramax. I bought the truck with an efi tune. Not sure how hot of a tune. Cold air intake. Shift kit in trans. Not sure on what kit. I got rid of cat and put a straights pipe in for muffler. Not sure where to go for upgrades. New to the diesels and I am trying to do my research. Any direction would be apprecisted