We really are not sure but we have gotten feed back from the folks from the west coast that have used a dyno and they claimj that we are putting out 2 more HP than anything they have tested.
Not real sure we have never had them on a Dyno. But have gotten feed back that they are about 2 HP better than Bayer or Obrian exhaust
Do you still have your 4 blade(19pitch) right hand ssm prop?
Hi fellow Dutchman owner! I just made the commitment to buy a 1978 Merc 115 to go on my Dutchman. I was wondering what engine and prop combo you had on your rig, and what other mods you've made..You've had your boat about 1.5 years, if I recall..how's it been going? I appreciate all of your help in identifying my boat for what it really was, and look forward to staying in touch.