With just an exhaust, I find that hard to believe. Maybe he wasn't trying or something. A WRX excels at 0-100 but once you get to 80 and above, that is in a tl type s's sweet spot. It pulls hard in that range. Not saying that your story is BS, just that it is hard to believe a WRX will pull on a type S at that speed. If that is how it happened, than congrats.