Suzuki 9.9hp to 20hp conversion - DF9.9B to DF20A

[bobhughes]

Thank you for this clear, easy to understand video. I converted mine today. My 14 foot Jon boat went from 6 Kts max (no plane) to 18 Kts. All for $400! Very much appreciated!

[Testikels]

I did the upgrade from 9.9 to 20 hp. And it worked. Unbelievable what a difference that makes. Never knew the 9.9 was capable of doing the things I experienced yesterday. Boat comes easily in plane now. And speed is Unbelievable! Thanks

[stevenkramer]

I love that you did this video! The part of AZ I live in has a hp limit of 10 hp. So I ordered the 9.9 and when I go to bigger lakes and rivers ill do the 20 hp thing and be much happier! Thank you!

[srileo]

This is a great public service! Really helpful video. Thanks for doing this.

[paulsongy]

Thanks for both this and the Speed test video. Don't know Why anyone would give these a thumbs down?? You provide a Great Service. The 9.9 Allows access to limited H.P. Lakes as well. Love that your Son is there with you!

[rmtackle]

Thank you for this video! I think you just sold me on the 9.9 and the upgrade for sure! 👍🎣🎣

[locker]

What an awesome idea. Very simple. My guess is that the ACU difference is only programming. Nothing physical. If you could have a dealer flash it. You could save 400 dollars. Still. What a great conversion. And a huge money saver

[SavageBrain]

Thank you! Thank you! I ordered the parts in the video from the same place you got yours. Install was easy. Also changed to 11 pitch prop as you suggested in your other video. My 10’ Caribe flies. Got 24mph. You Da

[mikedee]

Thanks for this excellent video ! I just bought a 27' 7000 pound sailboat that came with this 9.9 HP engine in an extra long shaft (25") model. You may be interested to know the 20 hp model is not available with the extra long shaft. Doubling the HP will make motoring into strong head winds and currents WAY more doable. This is a game changer for those of us with heavy displacement sailboats, thanks again !

[Peterson]

Ok, I recently did this conversion, and did so after speaking to a Suzuki tech who said the ECU from a 20hp is not needed, the stock ECU will adjust to the added airflow just fine and it did. Runs great, I even checked the spark plugs and they look good not running rich or lean.

[patonbike]

one thing that is interesting, suzuki doesn't make a 20hp console steer model, but they do make a 9.9hp console steer model. DF9.9BT EFI
- so this could be a way to get a 20 hp console steerer.

[Wyttyd]

This explains a lot for me. I had noticed that a lot of these 9.9 and 20 hp motors had the same displacement. I thought it was just a typo. Basically either just charging you an extra few hundred dollars for a better ECU which cost the same as the lower horsepower to manufacture.

[PhilTParker]

This is amazing. I just bought a new Mercury 2021 9.9 and will be in hour #2 of breaking it in this morning. I am blown away that horsepower can be doubled with such little effort!

[rakeshviswambharan]

LaingEJ, Awesome video buddy.. Keep up the good work to educate rookies like me who is about to get his new outboard for the first time..
Found it very useful. I was leaning towards Merc 9.9 but I am now thinking of Mercury 9.9 due to it longevity and easy maintenance

[roblebeau]

Really appreciate your videos!!!! I’m ready to buy the 9.9 Suzuki for a newly purchased 13’ Saturn Azzurro Mare. Wanted to follow up and see how the 20hp conversion is doing.
Thank you, Rob

[joetousignant]

Great information and well done. Thank you for sharing! You are helping folks out who are stuck with 10 hp limits and have a fat friend to fish with! LOL

[joetousignant]

This is totally legit! Suzuki made a 20 hp motor and detuned it to sell 9.9 models. You don't need to buy the seal, ONLY the flame arrestor and the ECU. You can put the flame arrestor into the existing rubber gasket. But no doubt, this turns your 9.9 into a 20 hp. The ONLY part numbers that are exclusive to the 9.9 are the restrictor plate and the ECM. After doing the change, the ONLY part numbers different between the 9.9 and the 20 are the decals!

[sfbayarea-fish-n-missio]

Very well edited and generally good video. Thanks for the content 👍

[jesseashmore]

Dude, this is going to save me so much money. I was about to buy a 20 for my Jon boat!

[BJPr]

That’s awesome! I wish I could do something similar with my Yamaha F9.9