#Yamaha 250 sho ecu flash upgrade#

Not many modern outboards have the aftermarket support Yamaha does so you are in good company with the big 4.2 V6. With the Yamaha, you can find a good used or rebuilt one and make upgrades from there building your own as you need. But, if your budget doesn’t allow for an engine as new as this, I would go Yamaha. With the Mercury you get slightly newer technology, digital controls in the ProXS version and you get the option of different gearcases, both being really solid. How does the big Yamaha compare to the Merc? These engines are very competitive. You could cone it and with those mounts you’d have a really hot engine and have quite a few bucks in your jeans over a 300R, a few ponies short but these 250 Mercs are most likely pushing 270+ HP on a dyno. If you’re running a ProXS, you get the advantage of DTS, really competitive pricing and a stock torquemaster is a great gearcase. Bother are great and a huge improvement over stock. Hydro-Tec offers Delrin mounts, which is an incredibly durable plastic, whereas Bob’s uses a solid aluminum.

And they just last longer, soft mounts wear out quickly, solid ones last. Right off the bat, you’re going to sharpen the handling and input of the steering by having solid mounts.

#Yamaha 250 sho ecu flash upgrade#

Hydro-Tec and Bob’s Machine offer solid mounts for the 4.2 and solid mounts are possibly the simplest and most beneficial upgrade you can make to your outboard. For the Yamaha V6, 200 to 250 SHO, there are aftermarket options available to really transform this big outboard. When we are talking about taking a semi performance engine and setting it up to perform a little better we always want to look at the critical things first and to me that is the mounts and the steering. Let’s look at the 250 HPs from Merc and Yamaha and how best to set them up with the latest performance parts and options. The great thing about the 4.2 V6 platform from Yamaha is its proven mechanics and aftermarket parts availability. In the other corner, the Yamaha Vmax SHO 250 is a big seller and a really popular engine for all types of boats. Mercury Racing owns the market on high performance engines and although the 300R is such an amazing package out of the box, the 250R is often overlooked, as well as it’s sibling the 250 ProXS.

Right now, there are a few really good options in the 250 HP class. Whether you have a fast single engine V hull, a bass boat or even a performance bay boat, a 250 HP covers a lot of ground while being priced very well and the ability to upgrade with aftermarket parts.