Good for you! Thank you for posting, this is something I've wanted to try for a long time. I'd also like to put snorkels on my Brutus's but haven't found anything workable. Was wondering what performance gains or any other differences its made. Also would the turbo be able to be submerged in water for short periods of time?
Adding the turbo most definitely adds to the power of the machine, I would do it again! I do have a whole kit from turbo kits.com for the yanmar, available if you want it, we can work something out. I cannot make any comments regarding submerging the turbos.