hey boys just seeing if anyone noes but im buying a xr6t 2004 manual still fresh with 100ks its got a bigger cooler and cat back exhaust but I took it for a drive today and I didnt thrash it to much but when I steped on it in 2nd got to about 4500-5000 and it so of lagged/missed it was weird the bloke said its always done it but if u ease into it, it wont do it he thinks its because its got a bigger cooler and not tuned and its always been ran on 98 and it mite be to high octane for it just wondering if anyones got any ideas or had this problem thanks
