Expected speeds for a 2020 SX 190

[mwalker4]

How high does the 190 rev, is 7300 rpm the max?

I have 2019 190 and 7500 -7600 is max. The boat seems affected by water temp.

 

[obrien19]

How high does the 190 rev, is 7300 rpm the max?

I think 7500-7600. I haven't done any WOT pulls this year

 

[2kwik4u]

How high does the 190 rev, is 7300 rpm the max?

Should be able to get to 7,800. I think that's the rev limiter in the ECU. I regularly see 7,650-7,700.

 

[JohnOntario]

Good to know, thanks. So based

Should be able to get to 7,800. I think that's the rev limiter in the ECU. I regularly see 7,650-7,700.

Wow...ok so there might be some truth to that break in period on the ECU. I do not get close to 7650 now. Thanks for that info...

 

[2kwik4u]

Good to know, thanks. So based

Wow...ok so there might be some truth to that break in period on the ECU. I do not get close to 7650 now. Thanks for that info...

I don't think the Yamaha ECU limits revs at any point. If you're not getting full revs now, you most likely never will.

First thing to check is the air filter, ensure you have good grease in both drive bearings, and make sure you don't have interference between the impeller and the wear ring.

Also, what elevation are you at? I'm typically around 500ft or so. If you're above 1k ft or so, then you can lose some power and associated revs.

 

[JohnOntario]

OK....not what the dealer stated, but also sounded like the dealer was guessing. Elevation is 351. Air filter is fine, checked it 2 days ago. 18 hours on this boat. Pretty much brand new. Thanks for the additional info....going up this Thur and will take it back to the dealer to get them to further check it out. First going to verify with GPS on speed and check speedo on boat.... I sent a note to Yamaha and asked a bunch of questions. If they respond will post that response.

 

[CaTiRo]

Wasn't there a throttle cable adjustment needed on some boats to get the full rpm range.

 

[JohnOntario]

Correct. Dealer adjusted throttle cable end of last season. I guess why I now can go 35mph and at one point got to 36....the mystery continues. Keep you posted.

 

[CaTiRo]

Odd how some 190s rev to low 7k whereas others can hit high 7k RPMs. The lack of RPMs would result in lower speed. I understand this issue at higher altitude.

 

[Gunner]

I have 2018 190. Usually around 38 to 39 on GPS, but varies based on several factors. 42ish in perfect conditions. I did the ribbon delete which helped a bit and seemed to give the engine a throated, less whiney sound. Boat cruises great in the 25 to 33 range. My is older hull design than yours.

 

[jeffrt]

Just ran my 2012 the other night and got 40.8 on GPS. Almost out of fuel and 2 people on board. Just passed 200 hours on it now.

 

[JohnOntario]

Great. Thanks for sharing.

 

[Bjames21]

2021 AR190 and my best so far was 39mph, calm water, 0 elevation, with 4 people all weighing under 155lbs and 90% full tank. No mods yet either!

Update:
I was able to get up to 42.8 according to my Conntext. I was solo with around 1/2 tank. Calm brackish water 0 elevation.

 

[bigsapper]

As noted above my best (41mph) was at about the 11-15 hour mark. Last year, with 2 adults and about 3/4 tank, I was typically getting 38mph noted by GPS, as the boat's speedo was off.

This year I'm not able to push over 34mph. I'm thinking it might be due to the Cobra Jet fins I had installed toward the end of the season last year.

Also, I don't recall seeing RPMs over 7,200. I've not seen any comfirmation as to redline on the latest models.

 

[2kwik4u]

How high does the 190 rev, is 7300 rpm the max?

I think rev limiter is up closer to 7,800. I regularly hit 7,600-7,650 on mine. Takes cool weather, and light load to get there. Had 3 adults and 2 kids and a dog aboard yesterday, was 7,550 at WOT. I'm boating at 580-ish ft asl

 

[mwalker4]

I think rev limiter is up closer to 7,800. I regularly hit 7,600-7,650 on mine. Takes cool weather, and light load to get there. Had 3 adults and 2 kids and a dog aboard yesterday, was 7,550 at WOT. I'm boating at 580-ish ft asl

The 2018 hull is smaller and faster. My 2019 got to 40 a couple of times in the cool spring (7550 rpm). I've done the ribbon mod and got another 100 rpm. But also added Cobra fins, Bimini up (sheathed not extended), and hotter weather. I get 37 if I'm lucky, lightly loaded, 900 ft AMSL.

 

[Postie]

Highest logged speed on mine, 39.6 mph. WOT with 2-4 aboard and full gas, smooth water/little wind - about 36.
This at sea level on the E. FL intracoastal. Dealer said to expect mid-30s, so he was spot on. I admit I showed a skeptical look when he said that.

Once the engine warranty expires I plan to do at least the ribbon delete. A couple more mph would be welcome. My previous boat, an '04 Sea-Doo Sportster 4-TEC once did 51 mph GPS on a smooth lake. Other than the "aw it's slower!" at first, I really don't miss the difference.

Sure, it'd be nice if it was faster - but where I boat 90+% of the time, the speed limit is max 25-30 mph. It cruises nicely at 5900-6300 rpm depending on load/wind. I also appreciate the (newer) hull design and spaciousness. Last - gas: on several long days, at most I've used about a half of the 40 gal tank. Any faster options - twins, supercharged... all use more gas and/or premium.

I have just purchased a 2024 SX190 Yamaha jet boat. Has only nine hours, and extended warranty. This will be an experience: the dealer took me out for almost an hour, and, after having a chance to see how quick that this boat was, my decision was made; the SX190 instead of the supercharged SX195. More money and premium fuel; uses more fuel, although, if you have to worry about the cost of fuel, then you probably cannot afford a boat.
I wondered out loud: how often am I going to go over fifty? The answer was simple: my average cruising speed is twenty-eight (28), and the SX190 accelerated to that, in a hurry. A simple boat to maintain, and with Yamaha's quality reputation, what more can anyone want.
I am looking forward to an interesting summer, next year. I will probably be spending a lot of time with my adult children, trying to figure out the handling, and how to dock the boat.
SHOULD BE LOTS OF FUN!

 

[Thermobrett]

I found the best cruising speed when we had our 2022 SX195 was 26-32 mph, that gave me the best fuel economy and comfort. It was nice being able to blow past a few pontoon boats leaving the river at 47+mph, but I rarely ran it WOT for extended periods of time. IMO, running anything at such high RPMs for extended periods of time is never a good thing, unless its a rental car . As for the handling, I had the Cobra Jet Super Ultimate AK-19 Deluxe steering fins by @Cobra Jet Steering LLC, definitely helped at slow speed maneuverability.