Yamaha VF200
I have a Bennington Tritoon with a SHO 200, before tuning it went 37mph at 5700 with a 15p prop. After installing the Outboard EFI tune I was very impressed it now runs 48-49mph with a 19p SS prop.

Yamaha VF115
My flat bottom hunting boat has a lot more punch since I tuned it. Feels stronger than my friends 150.

Suzuki DF250AP
WOW is all I can say. I gained almost 10mph and still accelerated quicker with a more aggressive prop.

Suzuki DF25A
My inflatable dinghy with a 25 felt under powered but now it is faster with a full load than I used to be running empty.

Yamaha F75 Tiller
The programming along with the small modification worked great. I did have to go up 2 on my pitch though. 

The team at Outboard EFI is great. Extremely quick replies and professional, helpful and friendly service! Dropped my boat off and picked up the next day. The work he did added instant power which increased the performance of my motor. Definitely recommend! Thanks again Joey and team!

Yamaha F50
My RIB gained 8mph with the tuning from Outboard EFI and restrictor removal. Dinghy races here we come.

Yamaha F50
I have a 20 Pontoon with an Yamaha F50 and it was not very quick. After tuning it now we can haul the kids one the tube and get them outside the wake. The engine picked up 800rpm and went from 5200 to 6000

F50 I am very pleased. I actually went fishing this morning. It runs like a champ. Fantastic throttle response. Plenty of torque as well. Gained 5mph and already had the restrictor out.

Outbard EFI flashed my DF200 and I gained some acceleration and MPH but near as much as my friend that had a VF200 done by them

Amazing Customer Service, Joey took the time to help troubleshoot my problem over the phone and do everything he could to get me back out on the water, will always use them for anything they do!

I have a DF40A on a 550 Havoc DBST and it completely changed the motor! I am thrilled with what EFI did for me highly recommend!

EFI outboards service is amazing. I called them up to get my Yamaha 200 SHO flashed he was at my house within an hour and got it done. Before the flash top speed was 47 its now hitting 57 with the wrong pitch. This motor is a beast can't wait to get a 21pitch on it and see what it really does. Thank you EFI outboards for unleashing my SHO.