225 Yamaha sho flashed

[TRIGGER]

Spoke before about flashing my new Yamaha sho 225 to a 330 and said I would let you know what happened.
The 225 would only turn my 25 pitch prop at 5400 rpm so I backed off to a 23 pitch to get it broke in. The boat would run 65mph. Flashed it to a 330 and now it's turning a cupped 26 pitch at 61-6200 rpm at 74 mph. This is on a z20 ranger tournament loaded with around 36 gallons of fuel and my wife with me. I'm sure if I drop some weight I will pick up some top end. Should also pick up some top end when it's not hot and humid. A tad bit sluggish coming out of the hole compared to the 23 pitch but still gets out fast enough.

 

[rsimms]

OK, showing my mechanical ignorance. What is "flashing?"

 

[Spurhunter]

That's awesome for a heavy boat loaded heavy. What is the limiter setting on that motor? 6250?

 

[Deer Assassin]

OK, showing my mechanical ignorance. What is "flashing?"

The ecu
Running a new program that controls the computer

Advancing timing and adding fuel to get more power via computer

 

[Spurhunter]

OK, showing my mechanical ignorance. What is "flashing?"

Reprogramming the ECU.

 

[Spurhunter]

The ecu
Running a new program that controls the computer

Advancing timing and adding fuel to get more power via computer

We were typing at the same time.

 

[TRIGGER]

That's awesome for a heavy boat loaded heavy. What is the limiter setting on that motor? 6250?

6300 I believe. I could have moved it to 7000 but no way I want to run it that hot. Some say it really gets in the power around 6500

 

[TN Larry]

Dang, that's honking for a heavier boat.

 

[redblood]

OK, showing my mechanical ignorance. What is "flashing?"

Different type than i was accustomed to in college id say lol

 

[TRIGGER]

Another thing to note is I ran a 25 pitch prop also and it ran 71 but at 71 I could feel the boat getting light, not chime walking but just felt super light in the water but with the worked 26 at 74 the boat was stable and didn't feel light at all.

 

[Smo]

Maybe I've been trolling too slow……

 

[ZachMarkus]

74mph is impressive for a ranger boat especially the summertime, you might pick up a little more speed in the cold weather months.

 

[scn]

Sounds like an improvement?

Just curious out of ignorance-what does doing that do to your warranty?

 

[Snowwolfe]

Sounds like an improvement?

Just curious out of ignorance-what does doing that do to your warranty?

What warranty? Lol

 

[TRIGGER]

What warranty? Lol

^^ what he said

 

[TRIGGER]

Made a few runs with different jackplate and trim settings. Just realized when it was running it's best I was only turning 6k

 

[mike52]

May want to try a 25 pitch -4 blade It made lot of difference on my boat

 

[TRIGGER]

May want to try a 25 pitch -4 blade It made lot of difference on my boat

Don't you lose a lot of top end with a 4 blade? My buddy ran a 4 blade on his Allison and it would fly but you can't compare an Allison to anything else lol

 

[FLTENNHUNTER1]

Pickin em up and layin em down!

 

[double browtine]

Don't you lose a lot of top end with a 4 blade? My buddy ran a 4 blade on his Allison and it would fly but you can't compare an Allison to anything else lol

The 4 blade will give you a better hole shot and they are usually a bit more stable than a 3 blade in a higher speed turn. If you could borrow one from a friend who has one, you could test it out and see.