i havent tried any of the new new pipes, but between the 2652 and 2630 and 2601, the 2601 is a good balance with a short manifold. the 2630 has more power , but struggle with run time with it. the 2652 is comparable with power with the 2601, but has the thirstyness of the 2630. but depends on gearing, track and tuning . the new pipes may be better than the 2652, but im not sure.