so Im heading to the city last night really late and I thought I was the only one on the freeway so I was cruising at 80/85, all of a sudden I see what looked like a mid to late 90s mustang GT coming up behind me. I add gas as we even out to get the boost going just in case and than its on! all the way up to 115 I kept up with him! we did this a few times and he didnt gain on me either time. Not bad for a old sports car with only a K&N Filter.