I lost :-( Not by much, but I lost...

I was up in northern cali this weekend and I was driving home late last night when I saw this Civic hatchback fly by me real quick. It was late and there was no traffic on this highway so I said why not...I raced up to him and we both gave each other a look and then we punched it. I started out very strong and I thought that the race was over...that I won, but then he started to gain. I was in 5th already and flooring it and he kept gaining...inch by inch until he was ahead. about 1 car length ahead. We kept at it for about a mile with no change in his distance in front of me. We both slowed down, I rolled my window down and I asked him what he had...it was pretty loud outside (being on the highway and all) but I heard him say B16...maybe something else...He had an exhaust (pretty loud), and that is all I was beknown to. He may have said something else but all I HEARD was B16. WTF? I thought my car would have beat his...I am thinking it was like a 1997 or 1998. 1995 GSR vs. 97 or 98 Civic hatch...He won. Ohh well, I took it all in good fun. My exit came up and I gave him the thumbs up and proceeded home...What do you guys think...I should have won, no?