I have a set on my 2000 700RMK and would never turn back. The power gain is great and I love the sound. I finally got it tuned properly and have very little concerns about leaning out now. I had some issues when I first bought the sled with the pipes already on it. The prev owner never compinsated for the increase in air flow resulting in a major melt down. But if you jet it properly and keep an eye on your plugs they sure make it nice. I also installed a digitron to check exhuast temps.
Good luck
I definetly recomend them
Whoops..your right, they are PSI............still love 'em
Although there are guys on here that have used the ves twins on NON ves applications, you just have to slightly modify the angle at the connection point to the enging. A quick slice and wee bend, and a quick tiggin'