Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

Higher Octane on turbo?

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Old Feb 3, 2004 | 09:35 PM
  #1  
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Higher Octane on turbo?

would higher octane show significant gains on a turboed maxima without lower compression pistons or advanced timing?
Old Feb 3, 2004 | 10:01 PM
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Doesnt really apply to just turbos. Higher octane is not better performance gas, its basically gas that has the ability to deter knock more.

So anything that helps deter knock more allows you to push the boost higher and get more out of the car.

Dixit
Old Feb 6, 2004 | 09:47 AM
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Honestly, you'd be smarter to spend $420 on an Aquamist water injection system.

Instead of paying $5+/gallon for 100+octane, you can mix in a little alcohol to prevent detonation like high octane gas AND get inter-cylinder cooling like an intercooler.

Plus, you can set it to turn on at a certain PSI, so you only use it when you need it.

IMHO, there is NO better bang-for-your-buck then an Aquamist WIS and anyone who is FI with stock CR is crazy for not having this AWESOME technology aboard. WRC guys swear by this setup and they run high boost for extended periods of time. Even their ECUs are programmed to work with WI, since they can get more timing AND boost.
Old Feb 6, 2004 | 09:50 AM
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With the strength of our VQs and stock CR, I feel the J&S and Aquamist is worth its weight in gold for how much additional boost you should be able to run.
Old Feb 6, 2004 | 10:26 AM
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Can Aquamist be used with a nitrous system (wet kit)?
Old Feb 6, 2004 | 11:27 AM
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i dont see why you would use it with nitrous since the nitrous is alot colder than water
Old Feb 6, 2004 | 11:32 AM
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Not sure how you would activate it, since the basic system uses a MAP sensor, but you *SHOULD* be able to manually turn it on via a switch. So, just put it inline with the N20 trigger switch?

Aquamist would be useful for the octane bump, but the N20 will definitely be superior on inter-cylinder cooling.

Originally Posted by SonicDust187
Can Aquamist be used with a nitrous system (wet kit)?
Old Feb 6, 2004 | 11:52 AM
  #8  
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Originally Posted by IceY2K1
Honestly, you'd be smarter to spend $420 on an Aquamist water injection system.

Instead of paying $5+/gallon for 100+octane, you can mix in a little alcohol to prevent detonation like high octane gas AND get inter-cylinder cooling like an intercooler.

Plus, you can set it to turn on at a certain PSI, so you only use it when you need it.

IMHO, there is NO better bang-for-your-buck then an Aquamist WIS and anyone who is FI with stock CR is crazy for not having this AWESOME technology aboard. WRC guys swear by this setup and they run high boost for extended periods of time. Even their ECUs are programmed to work with WI, since they can get more timing AND boost.
where do you mount the water jet I assume right before the throttle body but i dont know

would it be possible to use the stock windshield washer bottle to hold water for the system or would you need somthing bigger

any idea on how many gallons of water per hour it sprays i guess that would be dependent on what size jet you use and how often your in boost but a general idea would be nice im very interested in this as an alternative to an intercooler but if it uses more than 1 gallon of water per hour i dont think it would be conveniant
Old Feb 6, 2004 | 12:01 PM
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Originally Posted by subs1000w
where do you mount the water jet I assume right before the throttle body but i dont know
Between the MAF and TB, but not too close to the TB. You want to give it time to cool the charge air. I believe Aquamist recommends where.

would it be possible to use the stock windshield washer bottle to hold water for the system or would you need somthing bigger

any idea on how many gallons of water per hour it sprays i guess that would be dependent on what size jet you use and how often your in boost but a general idea would be nice im very interested in this as an alternative to an intercooler but if it uses more than 1 gallon of water per hour i dont think it would be conveniant
http://forums.maxima.org/showthread....54#post2696954
Old Feb 6, 2004 | 05:57 PM
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I read somewhere that you should drill holes in your throttlebody and put the jets there.
Old Feb 6, 2004 | 05:58 PM
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http://www.turbomirage.com/water.html
Old Feb 11, 2004 | 10:02 PM
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Per Aquamist, you should mount it as close to the IC discharge end as possible.

Now that I think about it, the rally car I work on has a boss welded into the elbow exiting the IC to be tapped for WI.

The longer the path, the more water that will be vaporized thus heat that will be absorbed.
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