32kts probably isn't far away, my pals 8.4mredbay tops out at the same but it doesnt suffer noticeably from turbo lag a few things can cause it, but would need more info to help, what is the max rpm at wot? Should be propped to make 3900 rpm with a light boat, they dont like being overpropped. Is this a new issue or has it always been the same?
