Raced a dodge cummins, 3 different times on the highway and walked him bad! He had twin turbos and a lot of stickers on the back window. Nice guys, I talked to them for a minute as we were cruising down the highway. They asked does that truck have a turbo? I said yes, how much boost are you running, I said 12 psi, they said that is a bad a$$ truck, I said thanks!