i figured id post this because i read the forum and never reall found any good comparo back to back info.

i have a 29' kryptonite with an xr dwp drive. the boat runs 93.6mph best and usually gets 92 any day. a friend of mine has an imco standard length lower so i gave that a try. i was all excited hoping i was gonna get 94-95.. i had a hard time getting just over 90. i got 90.5 out of it when i should have gone at least 92. i put the bravo dwp back on.. and right back to where i was.

the extended point must only benefit when its closer to the surface. im approx 3" below the bottom of the boat and have a stepped transom.

hope this helps someone who was wondering forever like me

Ray

The Imco's are know to use speed that is why some people just get the Imco upper and run bravo lower.

The Imcos are stronger than the bravos not faster.

I had same experience with a imco -2 shorty vs stock length lower with well blended hydromotive nose cone, boat lost 2-3 mph in same exact speed range you mention, added a 1 inch spacer and it lost even more, put full length bravo lower back on and speeds were right back in mid ninetys at the time, Smitty