The ROUSH CAI does “not” require a tune. PBD said that the 2018+ has a good factory CAI already & the only 2 aftermarket CAI’s that they’ve seen gains with are the JLT & the PMAS & it’s only 5-8 hp. Not worth $350.
Hello, my name is Kevin CoopDAWg Cooper and I just recently purchased my 1st Mustang at the ripe old age of 51. She's a 2019 GT and she's Orange Fury Pearl Tripple Clear. Here's a few pic's.