Thanks for all the replies, not really looking for HP gains, but don't want to lose power, or cause running issues.anything, Would like to lose 8 or so cheap pounds. There are so many cans out there with so many claims it's hard to pick which will be best bang for the buck. I've had really good results with SLP in the past, but wanted to see what else people were have good results with. There isn't a store near me where you can even hold one in your hands to see how it's made, so really appreciate the feed back from those who have tried them, thanks again.