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Yea I used toluene/xylene over the years too but its crazy expensive here at $25 a gallon. Sherman Williams wouldn't' sell me 5 gallons either without a contractors license. I guess I look too much like Walter White. Cheapest I've found 5 gallon pails is $180ish. Cheaper to buy it by the gallon. Makes no sense.
If this Boostane stuff will really take me to 95 octane for about $4-5 per 16 gallons then it sure seems like a deal.
Are you able to monitor knock and whatnot like on an LS car?
Try the Boostane stuff and see if you notice difference, you're already using 91 without any real issue so it would probably give you the cushion you're looking for.
It’s likely marketing spin. “5 points” usually means 91 to 91.5, not 96. It uses MMT, which helps a bit but won’t give full octane numbers. If you need real gains (like 93–95), look at Torco, Boostane, or Race Gas—they actually work but cost more.
I use e85 on my cars and love it. But ethanol and watercraft generally don't mix well and I didn't want to redo the entire fuel system on the waverunner.
If you are on pump gas, why not just fill them up with Premium? A modern PWC that would require high octane fuel is built for the levels of ethanol in regular pump gas.
Converting a watercraft to E85 is not typically done because ethanol loves water. This isn't an issue on land but on the water... there's lots of it (often some in each gas tank) and that can lead to fouled fuel.
If you are on pump gas, why not just fill them up with Premium? A modern PWC that would require high octane fuel is built for the levels of ethanol in regular pump gas.
Converting a watercraft to E85 is not typically done because ethanol loves water. This isn't an issue on land but on the water... there's lots of it (often some in each gas tank) and that can lead to fouled fuel.
It really is like nobody actually reads the first post before commenting on a thread nowadays. I would not have expected that from a mod.
This is a pretty modified ski that has a much bigger blower and wheel running much higher RPM and boost than factory. It has a knock sensor, but no way of logging knock without spending $700 on the logging package.
My concern is this tune is for 93 octane which isn't available here in KS. I was thinking a the price of $4 per 16 gal fill up Boostane claims it would raise octane above 93. So what the heck... might as well try.
The 4gph of 100% meth injection I installed is probably enough to crutch any octane concerns, but it still scares me a bit. This thing makes 16lbs and will buzz to 9200 rpm. factory is 8100 and 8ish lbs. Does 75mph and gets there really quick.
Wish I had some decent video. It's hard to tuck a phone into a life vest and hold on, lol. Can hear the blower whine anyway.
It really is like nobody actually reads the first post before commenting on a thread nowadays. I would not have expected that from a mod.
I read the first post but did miss the detail that the OP believes that 93 is not available in their area. (Moderators got a 5% pay cut this year, so I always skip the last few words of each post.)
My concern is this tune is for 93 octane which isn't available here in KS.
The web says that BP offers 93 in Kansas at all their stations. (The other companies do not.) The PWC instructions don't always cover 100% of the situations where the products are used. Most are at sea level where 93 octane is everywhere.
At altitude, lower octane gasolines are sold because of the thinner air. In Kansas, the 91 should operate for similarly to 93 for someone else at sea level.
Increasing the boost is another thing, but if you had knock problems you would know it and feel it on the jet ski. I have a supercharged RXT-T 300 and had to run it on 87 octane once when I ran low on gas during a long cruise. -> It was hell and sounded like a gremlin was running around the engine with a hammer. I was able to go slow, (close to idle) in order to avoid most of the knock. It was more pronounced at higher RPM. (Where the supercharger wasn't slipping.)
Sea Doo calls for 91 for your stock ski, as they do for mine. If you got your supercharger, tune, injectors, etc. from a place like Riva, I would give them a call and explain to them that you are at altitude and 93 isn't common. They should have people in the shop who can do the math with your air density and confirm if you are good to stay with 91 at altitude. If not, it looks like BP is not in your area but this site shows other gas stations that have 93: https://find93.com/
Sea Doo calls for 91 for your stock ski, as they do for mine. If you got your supercharger, tune, injectors, etc. from a place like Riva, I would give them a call and explain to them that you are at altitude and 93 isn't common. They should have people in the shop who can do the math with your air density and confirm if you are good to stay with 91 at altitude. If not, it looks like BP is not in your area but this site shows other gas stations that have 93: https://find93.com/
yea def no BP's or 93 in Wichita KS. We'd know if it was. Some of the e85 blender stations claim 93 but its just e20-e30 etc.
This is a much older ski with less support and aftermarket than the newer ones. (ecu isn't as good) It does have maptunerX with some big injectors and a fuel pump. Jesus from Riva set the tune up. He seems to think the knock sensor will just dumb down the performance with the 91 and didn't think it was necessary to change the tune. Unfortunately I'm stuck with their library supplied tunes and can't modify them myself.
Jesus from Riva set the tune up. He seems to think the knock sensor will just dumb down the performance with the 91 and didn't think it was necessary to change the tune.
That sounds like a pretty crappy answer to me. If Riva is saying that 93 is required for their tune, then someone in the shop should be able to give you a precise answer - no matter the vintage of your gear. (That person is probably not Jesus.) Your air pressure should be around 4% less than what Riva experiences at their shop. Whoever holds the slide rule, should be able to plug that into their slide rule and give you a result. (There's also a possibility that their 93 requirement is a wild *** guess and a safe bet for the folks in Florida who have 93 at every pump. If so, I would think they would owe you an honest answer about that also.)
In my experience with low octane fuel, the knock sensor didn't stop the knocking and the ski handled like a slug. (Perhaps that was partly to the ECU/knock senor holding things back.)
Did you check out the 93 octane finder website above? It looks like there are a fair number of stations in your area that have it. That might be the path of least resistance.
Yea no one of those stations have 93. No idea why they pop up on that site. Not even all of those stations are e85/blender stations. I really wish I had a 93 station local. I'd def know if there was. I do have e98 at the pump a few blocks from my house that I run in the drag cars. Didn't want to take that step with a pwc is all.
Yea no one of those stations have 93. No idea why they pop up on that site. Not even all of those stations are e85/blender stations. I really wish I had a 93 station local. I'd def know if there was. I do have e98 at the pump a few blocks from my house that I run in the drag cars. Didn't want to take that step with a pwc is all.
Most of those gas station "finder" sites are less accurate than flipping a coin. Before we actually got many e85 stations in my area, most of the locator sites showed over 20 stations available that either did not even exist or never carried e85. They also tended to show public pumps available at locked up private facilities.
I used the vp madditve a few times, never had any issues with it, plugs looked fine. The exhaust smelled like it was race gas, even had a couple people ask me what octane I was using because of the smell. 1 guy thought it was methanol idk if it really did anything, but it 100% smelled like it did
I used the vp madditve a few times, never had any issues with it, plugs looked fine. The exhaust smelled like it was race gas, even had a couple people ask me what octane I was using because of the smell. 1 guy thought it was methanol idk if it really did anything, but it 100% smelled like it did
I used that Madditive stuff too mixed with Chevron 94 and never had an issue at 16 psi. Plugs looked fine they just turned orange
Put a few hours on the ski with 4oz of Boostane in it. Supposed to net 85 octane. It did... nothing. Lol. Guess that’s a good thing! Def didn’t notice any performance increase. Guessing it wasn’t pulling timing prior.
I have an 11.2:1 LSAblown LQ9 and on ca. 91 it is not happy, sounds like a bag of marbles when i get into boost…..so ive been using a bottle of Boostane Professional religiously for the past 4 yrs now at every fillup….night and day difference but i buy it by the case from summit for roughly $180 for a box of 6……it does begin to add up but it is cheaper than a new motor…with that said im just about done building my 10.1:1 408, when the weather changes i will be putting it in….but the 32oz bottle of boostane professional WORKS, i wish i only knew how to test it to see how much octane it really adds….according to the chart on the back of the bottle my 20gal tank of 91 becomes 99………i call BS but my bag of marbles says its not 91 anymore and the performance would land me at 95-95 if i had to guess….but 99……..i wish i could verify
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idk if it really did anything, but it 100% smelled like it did 
