We had a chance to test XXX Racing Fuel’s new 138 oxygenated blend in our Nissan 370Z. After making a few pulls to get a consistent baseline on our 370Z
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01-30-2009, 02:51 PM | #1 (permalink) |
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XXX Racing Fuel gains 14whp on stock 370Z
We had a chance to test XXX Racing Fuel’s new 138 oxygenated blend in our Nissan 370Z. After making a few pulls to get a consistent baseline on our 370Z (260whp), we added 5 gallons of oxygenated XXX race gas. The result was 274whp, an impressive 14whp gain.
XXX Race Gas Comparison Video: Source: Injected Performance
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01-30-2009, 03:00 PM | #3 (permalink) |
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That's a really big gain from just fuel... Now with tuning...
By the way, how much does that new fuel go for per gallon?
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01-30-2009, 04:38 PM | #6 (permalink) |
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I ran 105 in my Trans Am and hardly felt the difference. But 14HP is a big gain.
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01-31-2009, 03:27 AM | #8 (permalink) |
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The biggest gain from running higher octane fuel is preventing knock. You won't gain more than 1hp from race fuel in the best of situations. That 1hp is probably just random standard deviation from the mean... Running race fuel doesnt give you magical hp, it just allows you to run more aggressive tunes with a little bit more of a safety margin.
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01-31-2009, 05:07 AM | #9 (permalink) |
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Right. But ping/detonation is the key reason for hp loss... If they're making 332HP on 91-92 at the crank, then really, the motor is making MORE hp without detonation. So, yes, you're right, there's not REAL gain from it, but it is finding that extra hidden HP.
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01-31-2009, 12:31 PM | #11 (permalink) | |
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Might as well use this opportunity to help out the less technically inclined crowd who does't know what pinging/detonation/knocking is... Engine knocking - Wikipedia, the free encyclopedia For those of you who don't like to read and like things simplified. Here is the way I explain it: There are many causes for it, however in simplest terms knock is the premature ignition of the air/fuel mixture inside your engine/cylinders. Because it ignites at two different places within the cylinder, the shockwaves from the separate combustions smash into each other creating a "ping" sound. Sounds a lot like marbles bouncing around inside your engine. Unfortunately this produces a huge amount of stress on the internals of the engine...eventually one of them breaks. Higher octane fuel, as I said, is harder to ignite and therefore more resistant to igniting prematurely. Voila, now you know the point of race fuel. EDIT: I see now that this fuel is oxygenated, I could see how it could theoretically produce gains. Why wouldn't all our gas be oxygenated? My best guess would be that the oxygen makes more power, however it also increases heat and stress therefore making it more prone to knocking. That is why this fuel also needs to be higher octane. It's a cool idea for a quick power booster... Last edited by RCZ; 01-31-2009 at 12:38 PM. |
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09-10-2010, 12:36 AM | #12 (permalink) |
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Too bad they can't sell an additive.
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09-10-2010, 07:18 AM | #13 (permalink) | |
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Now your pinging issue would certainly come into play if they are not raising the octane of the fuel at the same time as raising the oxygen. EDIT: thanks wilsonp for resurrecting this post so I could add my two cents to a Zombi Thread
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09-10-2010, 08:43 AM | #14 (permalink) |
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I just leave my gas tank open so all the oxygen can flow in on its own.
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