Just installed a new set of lightnings on my boat about three weeks ago. (actually I bought them used with about one hour on them, already made up for a boat nearly identical to mine, a rare find!) Anyway, I have had the boat out once since then, and in the little time I got on the lake, I noticed a huge difference in throttle response! I didn't get to really open it up, but the blower is now making more boost and making boost faster with only the exhaust change. (previously had logs) Install was a piece of cake with the exception of shortening two bolts. I could have even avoided that but was in to big of a hurry to fire them up!