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Author: Subject: Octane booster or race fuel?
Jon Ison

posted on 20/2/18 at 03:53 PM Reply With Quote
Octane booster or race fuel?

Turbocharged engine, needs one or the other to prevent detonation when running high boost.


Which one?

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nick205

posted on 20/2/18 at 04:17 PM Reply With Quote
For road or track use?

Are you allowed to use race fuel on the road (I ask because I don't know)?

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Jon Ison

posted on 20/2/18 at 04:18 PM Reply With Quote
Track, 1 lap sprints race fuel allowed.
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nick205

posted on 20/2/18 at 04:22 PM Reply With Quote
Thanks, that clarifies it for me.
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Theshed

posted on 20/2/18 at 05:59 PM Reply With Quote
E85? Just discovered this stuff and intend to use it n my 15:1 compression engines. Google suggests it is a good compromise.
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Jon Ison

posted on 20/2/18 at 06:27 PM Reply With Quote
Ethanol don't like rubber though?
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adithorp

posted on 20/2/18 at 06:53 PM Reply With Quote
I'd think you'd get more consistent quality with race fuel.





"A witty saying proves nothing" Voltaire

http://jpsc.org.uk/forum/

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Nickp

posted on 20/2/18 at 07:20 PM Reply With Quote
quote:
Originally posted by adithorp
I'd think you'd get more consistent quality with race fuel.


I'd think so too.

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Oddified

posted on 20/2/18 at 09:20 PM Reply With Quote
Octane booster works ok if you only need a little bit of help, something like Millers cvl turbo works well. Some others don't seem to do much when i've tried them.

Next is water/meth injection, works very well. I have a Devils Own system on my car, controlled by the ecu over a certain boost and throttle position.

Next is race fuel, loads out there. I've tried VP C16 and Q16, C16 stops any det unless you have a way to much boost/timing/compression and the oxygenated Q16 stops any det and adds a bit of power. It does lean the mixture of slightly though so make sure it's slightly rich before using it or remap to suit. Neither are cheap.

E85 is a bit of a special case, other than eating many rubber pipes/o rings, you also need to map it specifically for E85 as it needs far more fuel flow.

Ian

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Nickp

posted on 20/2/18 at 09:37 PM Reply With Quote
quote:
Originally posted by Jon Ison
Turbocharged engine, needs one or the other to prevent detonation when running high boost.


Which one?


Is this just in 'ludicrous mode' Jon?

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Ivan

posted on 21/2/18 at 09:06 AM Reply With Quote
Slightly OT but I use octane booster in my standard Subaru Forester XT and it has made a huge difference - no more detonation related retardation of timing and fuel consumption has dropped from 12+ l/100km to a very consistent 10 l/100km and car is much more fun to drive. I use NF Street Octane Booster in our premium 95 octane fuel which claims to take octane up to 98 at 1 bottle per 50 liters.
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JimSpencer

posted on 21/2/18 at 12:57 PM Reply With Quote
quote:
Originally posted by Jon Ison
Track, 1 lap sprints race fuel allowed.


Hi - I'd carefully check that, as while you can run some race fuels, it's not many - assuming it's an MSA event of course.

Fuel is meant to be to 'pump specification', so you can use some of the milder race fuels (up to Sunoco 102 level, from memory)

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