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  #21  
Old 07-18-2016, 05:09 PM
gillysmi gillysmi is offline
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I know first hand one that has. yammy 225 bumped to a 250 and it was amazing how much more power through all rpm's that it gained. for $800 the performance was well worth it.

going from a 150 to a 200 may be different... main thing is to be sure the final gear drive and other internals are the same as the 200.
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  #22  
Old 07-19-2016, 08:36 AM
hunterjoe hunterjoe is offline
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I contacted them to see how much I'd gain with my F200 and they said they could get it to 215 is all. In my case that wouldn't be even close to worth it unless the motor ins't putting out close to 200. Which now is a bit surprising if they can get 200 from the 150 why can't the get the 200 closer to maybe 240?
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  #23  
Old 07-19-2016, 02:25 PM
Franco Cialone Franco Cialone is offline
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I know that they also work on Merc 75 hp Optimax, with a air restrictor removal and a ECU "reflash" , you can turn your 75 into a 115 !
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  #24  
Old 07-19-2016, 04:12 PM
Topwater Topwater is offline
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Quote:
Originally Posted by Franco Cialone View Post
I know that they also work on Merc 75 hp Optimax, with a air restrictor removal and a ECU "reflash" , you can turn your 75 into a 115 !
125 hp actually
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  #25  
Old 07-19-2016, 06:38 PM
Beegle Beegle is offline
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Quote:
Originally Posted by hunterjoe View Post
I contacted them to see how much I'd gain with my F200 and they said they could get it to 215 is all. In my case that wouldn't be even close to worth it unless the motor ins't putting out close to 200. Which now is a bit surprising if they can get 200 from the 150 why can't the get the 200 closer to maybe 240?
Law of diminishing returns. Google it.
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  #26  
Old 07-19-2016, 07:19 PM
hunterjoe hunterjoe is offline
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Quote:
Originally Posted by Beegle View Post
Quote:
Originally Posted by hunterjoe View Post
I contacted them to see how much I'd gain with my F200 and they said they could get it to 215 is all. In my case that wouldn't be even close to worth it unless the motor ins't putting out close to 200. Which now is a bit surprising if they can get 200 from the 150 why can't the get the 200 closer to maybe 240?
Law of diminishing returns. Google it.
Awesome! Thanks for the lesson. The 200 and 150 aren't the same motor not do they have the same tech. But I guess that "law" applies here. SMH
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  #27  
Old 07-19-2016, 08:14 PM
Kevin23 Kevin23 is offline
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I wonder how fast they could get my 90 4s to go? WOT at 47mph on a 17' boat this morning... Nah thats fast enough for me.


Sent from my iPhone using Tapatalk
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  #28  
Old 07-20-2016, 02:45 PM
CKM CKM is offline
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anybody familiar with what tuners are doing to diesel pickups now days would understand doing this to outboards is nothing different. the amount of hp increase in diesels is staggering.
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  #29  
Old 07-20-2016, 03:09 PM
Scott C Scott C is offline
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Quote:
Originally Posted by CKM View Post
anybody familiar with what tuners are doing to diesel pickups now days would understand doing this to outboards is nothing different. the amount of hp increase in diesels is staggering.
Correct but these yamahas are not forced induction its a bit different.
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  #30  
Old 07-20-2016, 04:24 PM
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Not logged in... Sorry.

I have the exact same boat/motor - different year.

Stock is a 3 blade, 21 pitch prop.
It will run 52-53, trimmed out and full of fuel, 4 tackle boxes of musky gear. I use this prop early / late when the boat is 100% fishing boat. My complaints about this prop are - poor(ish) hole shot, high planing speed (~18 mph), not great when it's really rough out (think Mille Lacs on a windy day when I say rough)

Ricky (Propman) set me up with a 4 blade Powertech - 19 pitch.
It will run 47-48. Hole shot is fantastic - boat jumps out of the hole. I use this prop when I pull my kids on a tube. It stays on from about June through early September. I've noticed that my planing speed dropped into the ~16mph range too - so it planes off earlier - which is great for tubing. My biggest complaint about this prop is that it tends to blow out (cavitate / lose grip) in sharp turns pulling a tube, and sometimes (with a lighter load) it will lose grip around 3500rpm if I drop the hammer hard. I'm sure both of these issues could be fixed if I dropped the motor a hole, but since I swap props - that isn't happening.

Bottom line, they are both great props. They will both run ~5800-5900 rpm (I don't run it that hard much, but I did do some prop testing before I pulled the trigger on the 19P Powertech). A four blade prop has more bite and a better hole shot at the expense of top end. The F150 is a great motor - it's got a lot of displacement (more torque) and good top end power (HP).

Ricky is a super good guy - buy from him. Make sure you test it in ways that you think you will be using the boat to ensure it doesn't over or under rev, and it gives you what you are looking for. If it doesn't, go back and try something else.
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