I was pulling onto the 400 South ramp when my eye catches a modded 335i in the adjacent lane. He had at least an exhaust and he was lowered from what I can see.The light changes and we begin to merge on the highway and he quickly dodges through some slow commuters to get on the freeway so I give chase. As soon as we clear the traffic, I line up beside him and downshift to 3rd. I wait till I see him jump and I give the gas pedal some pressure. Surprisingly he pretty much holds his position and by the end of 3rd I have maybe a half car, but as I shift into fourth and continue my lead quickly grew to about 2-3 cars towards the end of fourth. I slowed down and gave him a thumbs up and he flashed his high-beams and we parted ways.