Fuel Choice???

Caliche

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So for all of you that have and or had a SC engine.... what’s the best fuel for the Beast? E-85, 93, 91, 89....... thanks.
 

Guns22

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93 otherwise you will start to get detonation . It can do some nasty damage over time
 

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93 otherwise you will start to get detonation . It can do some nasty damage over time
I imagine 93 would be ideal, but since it is not available everywhere in the US I am betting that the recommended fuel will be 91 octane. Obviously running 93 is safer due to the lower risk of the fuel pre-detonating in the cylinder, but you gotta run what is available in your area and the computer can make adjustments to small changes to things like fuel octane levels.
 

F8Demon

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93 otherwise you will start to get detonation . It can do some nasty damage over time
91 is just fine and will not cause detonation if you don't have 93 available. Kwik Trip non oxy 91 is good. I run 102 in the Demon when I can!
 

Kyle702

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I remember someone saying that 91 is recommended for the hellcat chargers so I would assume it would be the same for the TRX. I am sure higher wouldn't hurt but probably not really needed
 

Guns22

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Forgot 93 isn’t everywhere sorry . I have used 91 in the past and really had no issues
 

Guns22

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If you are concerned about detonation you can always pick up a bottle of octane boost they seem to work ok for a little piece of mind anyway.
 

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93. A buddy of mine works for a race shop and can get me some race fuel if needed. Also I can get E85 and 100 octane from a lot of gas stations near me
 

Guns22

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What’s the deal with E85 . Never used it , I have it in my area . My question is do you need a tune or a blend mix with regular fuel to use it safely ?
 

F8Demon

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So which is it Guns, below 93 will cause detonation, or it wont and you have had no problems? LOL. :rolleyes: Curious why you think the manufacturer, who has to back a warranty, is wrong? :unsure:
Also, there is no reason to put octane boost in a stock engine, you will get no benefit, and that stuff can be harmful to plugs, injectors, etc. If running a stock tune, put 91 or better in and leave it at that.
 

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What’s the deal with E85 . Never used it , I have it in my area . My question is do you need a tune or a blend mix with regular fuel to use it safely ?
E85 is already mixed. You can mix it further to reach different ethanol levels. I would not do this without a way to measure the alcohol level accurately. Most cars on the road today (non-EV) are designed to run on fuel up to E10 which is what comes out of the pump at most fuel stations. I am not sure if the TRX is setup from the factory to run a different mixture or not. Typically you need a tune at a minimum and may require additional components to prevent damage to your fuel system from prolonged use of fuels with higher than recommended ethanol contents.

That being said, I would certainly be interested in running E85. Boosted vehicles tend to love it and it allows you, generally, to safely push higher boost levels. Also, there is a station with E85 that is about 1/2 mile from my house...just have to wait and see unless someone has this information already.
 

Guns22

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So which is it Guns, below 93 will cause detonation, or it wont and you have had no problems? LOL. :rolleyes: Curious why you think the manufacturer, who has to back a warranty, is wrong? :unsure:
Also, there is no reason to put octane boost in a stock engine, you will get no benefit, and that stuff can be harmful to plugs, injectors, etc. If running a stock tune, put 91 or better in and leave it at that.
 

Guns22

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Not saying 91 would cause issues but given the choice I would run 93 that’s all , like I said I have run 91 without issues didn’t mean to create any confusion, just stating what I have run in my s/c vehicles
 

Distilled DesignWorks

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These engines respond well with E85, around 70% ethanol or less you start to loose advantage of the additional timing. If they come with a dual fuel pump like the Track Hawk we should be able to swap injectors and add a boost a pump to be E85 compatible. A flex tune works great if your running off the pump then you can use what ever fuel you want and not have to worry about getting a batch of fuel with low ethanol content.
 

F8Demon

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Not saying 91 would cause issues but given the choice I would run 93 that’s all , like I said I have run 91 without issues didn’t mean to create any confusion, just stating what I have run in my s/c vehicles
Cool thanks. It being a s/c vehicle doesn't really matter, it has to do with the compression ratio, the higher the ratio, the more octane needed. Speaking high level, for a forced induction you actually need a lower compression ratio in general. Incredible engineering and electronic controls have allowed for fairly high compression ratio's (10+ to 1) WITH forced induction, requiring premium (91+).
 

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