I ran a set on my Raptor when I had it. Made more power with the recommended ring set for the piston than the total seal. A lot of guys use to run them on there Cannondales but no hp increase either. I think on a V-8 engine you can see more of a gain but even then on my race 406 smblk was burning a quart of oil a week running these rings. Now this is just my experience with them and I will never use them again.
To me if they are so great everyone under the sun would be using them.....JMO