Best Sunoco fuel for my yzf 250 19?

kb228 wrote:

Sunoco 110 is pretty good. Used it for a while in both of my kawis.

kb228 wrote:

Sunoco 110 is pretty good. Used it for a while in both of my kawis.

dmm698 wrote:

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f...

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f Engine, even a 250f engine with various amounts of work done to it.

If you're looking for a 4 stroke fuel, which will require a remap, and provide actual gains, break out your pocket book and take a look at U4.4. Given that the engine is stock, if you really want to spend money, then have it setup for MR12.

kb228 wrote:

Sunoco 110 is pretty good. Used it for a while in both of my kawis.

dmm698 wrote:

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f...

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f Engine, even a 250f engine with various amounts of work done to it.

If you're looking for a 4 stroke fuel, which will require a remap, and provide actual gains, break out your pocket book and take a look at U4.4. Given that the engine is stock, if you really want to spend money, then have it setup for MR12.

kb228 wrote:

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with...

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with mild engine mods.

If you want to show me why its not good im all for learning more. But being a dick and saying im wrong with nothing to back that up is uncalled for. End of the day ive had a great experience with that gas and since hes looking for sunoco specifically, i mentioned it.

MadsDausel wrote:

I will try a get ecu setup for race fuel but can't find out which fuel I should use?

Engine stock
Pipe yoshimura

MadsDausel wrote:

I will try a get ecu setup for race fuel but can't find out which fuel I should use?

Engine stock
Pipe yoshimura

mxb2 wrote:

Vp t4. Non pump

kb228 wrote:

Sunoco 110 is pretty good. Used it for a while in both of my kawis.

dmm698 wrote:

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f...

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f Engine, even a 250f engine with various amounts of work done to it.

If you're looking for a 4 stroke fuel, which will require a remap, and provide actual gains, break out your pocket book and take a look at U4.4. Given that the engine is stock, if you really want to spend money, then have it setup for MR12.

kb228 wrote:

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with...

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with mild engine mods.

If you want to show me why its not good im all for learning more. But being a dick and saying im wrong with nothing to back that up is uncalled for. End of the day ive had a great experience with that gas and since hes looking for sunoco specifically, i mentioned it.

dmm698 wrote:

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f...

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f Engine, even a 250f engine with various amounts of work done to it.

If you're looking for a 4 stroke fuel, which will require a remap, and provide actual gains, break out your pocket book and take a look at U4.4. Given that the engine is stock, if you really want to spend money, then have it setup for MR12.

kb228 wrote:

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with...

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with mild engine mods.

If you want to show me why its not good im all for learning more. But being a dick and saying im wrong with nothing to back that up is uncalled for. End of the day ive had a great experience with that gas and since hes looking for sunoco specifically, i mentioned it.

dmm698 wrote:

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say...

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say comment out of it for the time being), explain to me how 110 octane fuel is a good one for a stock compression 250f/450f? You've just stated you "noticed a difference in power and response", with 110 in stock and mild engine mod bikes. This is the opposite of what that fuel would do for you, you even stated it previously, but with this post the placebo effect of race fuel got to you.

You're not pushing crazy compression numbers to require a fuel with that level of octane. 110 is also non-oxygenated. I dont think I need to break it down to the point of what octane means as I believe you grasp that. All of the sunoco fuels that are oxygenated are done so with ethanol. Something various folks cant seem to grasp is not the end all be all of the world when it comes to fuel. MrPro6 is only a ron of 104 and a MON of 86, 95 R+M/2 ; MR12 101 RON 85 MON R+M/2 of 93. These fuels make power in four strokes (more so the MR12 as it isnt bound by ama requirements) because of the oxygen content 8.73% by weight on say the MR12. These fuels really do require a remap as the stoich is much lower, need to flow more fuel, but they do offer measurable gains. You are going to be fairly lean with a production pump fuel ignition/fuel map probably designed for something in the 14:1 range, if you pour in MR12 thats in the 12.8 range just based on stoich values. Pouring in a straight non oxy 110 fuel is going to hurt peak performance more than increase it in a stock or mildly modified engine.

If the OP really wants to stick with sunoco, 260 GT PLUS is just about a pour in replacement with a touch more oxygen content than 93 pump fuel with 10% ethanol (very comparable to T4, and probably more of a pour in replacement than T4 when you look at stoich values), or the EX02 if you want something thats comparable to the MR12/U4.4 VP fuels.

kb228 wrote:

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with...

I used sunoco 110 for 2/3 years with zero issues and did notice a power/responsiveness gain in both a 450 and 250, both stock and with mild engine mods.

If you want to show me why its not good im all for learning more. But being a dick and saying im wrong with nothing to back that up is uncalled for. End of the day ive had a great experience with that gas and since hes looking for sunoco specifically, i mentioned it.

dmm698 wrote:

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say...

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say comment out of it for the time being), explain to me how 110 octane fuel is a good one for a stock compression 250f/450f? You've just stated you "noticed a difference in power and response", with 110 in stock and mild engine mod bikes. This is the opposite of what that fuel would do for you, you even stated it previously, but with this post the placebo effect of race fuel got to you.

You're not pushing crazy compression numbers to require a fuel with that level of octane. 110 is also non-oxygenated. I dont think I need to break it down to the point of what octane means as I believe you grasp that. All of the sunoco fuels that are oxygenated are done so with ethanol. Something various folks cant seem to grasp is not the end all be all of the world when it comes to fuel. MrPro6 is only a ron of 104 and a MON of 86, 95 R+M/2 ; MR12 101 RON 85 MON R+M/2 of 93. These fuels make power in four strokes (more so the MR12 as it isnt bound by ama requirements) because of the oxygen content 8.73% by weight on say the MR12. These fuels really do require a remap as the stoich is much lower, need to flow more fuel, but they do offer measurable gains. You are going to be fairly lean with a production pump fuel ignition/fuel map probably designed for something in the 14:1 range, if you pour in MR12 thats in the 12.8 range just based on stoich values. Pouring in a straight non oxy 110 fuel is going to hurt peak performance more than increase it in a stock or mildly modified engine.

If the OP really wants to stick with sunoco, 260 GT PLUS is just about a pour in replacement with a touch more oxygen content than 93 pump fuel with 10% ethanol (very comparable to T4, and probably more of a pour in replacement than T4 when you look at stoich values), or the EX02 if you want something thats comparable to the MR12/U4.4 VP fuels.

kb228 wrote:

Yes, lowest possible octane is best. Sure, maybe i could have done some digging and found a 93 oct race gas from sunoco. Im at work...

Yes, lowest possible octane is best. Sure, maybe i could have done some digging and found a 93 oct race gas from sunoco. Im at work, didnt really think of doing that. My bad.

First thought was my experience , my friends, and others in this thread with sunoco 110. Its good for 13:1CR. Stock bikes are pushing 14:1 are they not? And also good for pretty much every application. That is directly from sunoco.

As far as ethanol, the MFGs state to run ethanol free fuel. Does regular pump gas work? Absolutely. Tons of people use it.

Regarding power, a mapped ecu with race gas(as the op mentioned he wants to do) absolutely makes more power. Especially paired w his pipe.

dmm698 wrote:

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say...

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say comment out of it for the time being), explain to me how 110 octane fuel is a good one for a stock compression 250f/450f? You've just stated you "noticed a difference in power and response", with 110 in stock and mild engine mod bikes. This is the opposite of what that fuel would do for you, you even stated it previously, but with this post the placebo effect of race fuel got to you.

You're not pushing crazy compression numbers to require a fuel with that level of octane. 110 is also non-oxygenated. I dont think I need to break it down to the point of what octane means as I believe you grasp that. All of the sunoco fuels that are oxygenated are done so with ethanol. Something various folks cant seem to grasp is not the end all be all of the world when it comes to fuel. MrPro6 is only a ron of 104 and a MON of 86, 95 R+M/2 ; MR12 101 RON 85 MON R+M/2 of 93. These fuels make power in four strokes (more so the MR12 as it isnt bound by ama requirements) because of the oxygen content 8.73% by weight on say the MR12. These fuels really do require a remap as the stoich is much lower, need to flow more fuel, but they do offer measurable gains. You are going to be fairly lean with a production pump fuel ignition/fuel map probably designed for something in the 14:1 range, if you pour in MR12 thats in the 12.8 range just based on stoich values. Pouring in a straight non oxy 110 fuel is going to hurt peak performance more than increase it in a stock or mildly modified engine.

If the OP really wants to stick with sunoco, 260 GT PLUS is just about a pour in replacement with a touch more oxygen content than 93 pump fuel with 10% ethanol (very comparable to T4, and probably more of a pour in replacement than T4 when you look at stoich values), or the EX02 if you want something thats comparable to the MR12/U4.4 VP fuels.

kb228 wrote:

Yes, lowest possible octane is best. Sure, maybe i could have done some digging and found a 93 oct race gas from sunoco. Im at work...

Yes, lowest possible octane is best. Sure, maybe i could have done some digging and found a 93 oct race gas from sunoco. Im at work, didnt really think of doing that. My bad.

First thought was my experience , my friends, and others in this thread with sunoco 110. Its good for 13:1CR. Stock bikes are pushing 14:1 are they not? And also good for pretty much every application. That is directly from sunoco.

As far as ethanol, the MFGs state to run ethanol free fuel. Does regular pump gas work? Absolutely. Tons of people use it.

Regarding power, a mapped ecu with race gas(as the op mentioned he wants to do) absolutely makes more power. Especially paired w his pipe.

dmm698 wrote:

How is his pipe bumping his octane requirement from 93 to something in the area of 110? BTW, yeah, stock bikes are up in the 13.5-14.1:1...

How is his pipe bumping his octane requirement from 93 to something in the area of 110? BTW, yeah, stock bikes are up in the 13.5-14.1:1 range now for compression ratio from the factory. Agreed. Same bike that states in the user manual to run 93 octane pump fuel. Just randomly stating a comp ratio (13:1) is good for 110 is like saying blue = black. There are SO many other variables. I've got a 110 cubic inch 11.25:1 air cooled V twin harley engine that will ping without splashing some higher octane fuel in with 93 pump. Yet stock kx250f's off the dealer floor today are 13.7:1 and run fine on pump gas. Yes, i'm comparing two completely different engines but this proves the point as such.

MadsDausel wrote:

I will try a get ecu setup for race fuel but can't find out which fuel I should use?

Engine stock
Pipe yoshimura

dmm698 wrote:

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f...

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f Engine, even a 250f engine with various amounts of work done to it.

If you're looking for a 4 stroke fuel, which will require a remap, and provide actual gains, break out your pocket book and take a look at U4.4. Given that the engine is stock, if you really want to spend money, then have it setup for MR12.

MadsDausel wrote:

I can't get vp easy so I will use Sunoco oxy fuel. And to boost hp on sandtracks fuel is the easist way.

harescrambled wrote:

Buy 260GT. anything better than that is wasted on a stock engine, and may even decrease performance

dmm698 wrote:

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say...

didnt you just post "lowest octane possible to avoid detonation" in another fuel thread? While this is entirely accurate (i'll leave your other ethanol hear say comment out of it for the time being), explain to me how 110 octane fuel is a good one for a stock compression 250f/450f? You've just stated you "noticed a difference in power and response", with 110 in stock and mild engine mod bikes. This is the opposite of what that fuel would do for you, you even stated it previously, but with this post the placebo effect of race fuel got to you.

You're not pushing crazy compression numbers to require a fuel with that level of octane. 110 is also non-oxygenated. I dont think I need to break it down to the point of what octane means as I believe you grasp that. All of the sunoco fuels that are oxygenated are done so with ethanol. Something various folks cant seem to grasp is not the end all be all of the world when it comes to fuel. MrPro6 is only a ron of 104 and a MON of 86, 95 R+M/2 ; MR12 101 RON 85 MON R+M/2 of 93. These fuels make power in four strokes (more so the MR12 as it isnt bound by ama requirements) because of the oxygen content 8.73% by weight on say the MR12. These fuels really do require a remap as the stoich is much lower, need to flow more fuel, but they do offer measurable gains. You are going to be fairly lean with a production pump fuel ignition/fuel map probably designed for something in the 14:1 range, if you pour in MR12 thats in the 12.8 range just based on stoich values. Pouring in a straight non oxy 110 fuel is going to hurt peak performance more than increase it in a stock or mildly modified engine.

If the OP really wants to stick with sunoco, 260 GT PLUS is just about a pour in replacement with a touch more oxygen content than 93 pump fuel with 10% ethanol (very comparable to T4, and probably more of a pour in replacement than T4 when you look at stoich values), or the EX02 if you want something thats comparable to the MR12/U4.4 VP fuels.

kb228 wrote:

Sunoco 110 is pretty good. Used it for a while in both of my kawis.

dmm698 wrote:

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f...

good lord you feel the need to post in every single thread, with such misinformation. Sunoco 110 is NOT a good fuel for a stock 250f Engine, even a 250f engine with various amounts of work done to it.

If you're looking for a 4 stroke fuel, which will require a remap, and provide actual gains, break out your pocket book and take a look at U4.4. Given that the engine is stock, if you really want to spend money, then have it setup for MR12.

jameslowry wrote:

i have been running sunoco std110 for 40 yrs in 2 & 4 stroke with zero problems & my kawasaki zx-14 loves the stuff