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has any body heard of these i was reccomended by opposite lock that i should get one is ment to increst the air flow and make a massive difference but they want $400 for it i think this seems alot for what it is dosen anybody know anything about then are they worth it?
cheerz
 

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In all seriousness, if it really is machined out of a billet then $400 is a good price for something of that size and complexity.
 

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Billet airbox lid.

Hi mate,
I have two of theses air box lids and they are excellent in quality and design. They made a large difference to acceleration and cruising power. The cars have much better response at all speeds, but really noticealbe on the highway. Also have dropped 100deg egt on the highway too. Not cheap but worth the money.
rgds Keith.
 

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Jimmybill on here sells them he is in Gawler S.A do a search cheers MO
 

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I think I'll stick to the Hyclones and Kuhneutson Valves. :D

Cheers

Ray
 

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Wrong, this are flow bench tested items, i run one, i never did a dyno run, but i changed everything at the same time, 4" snorkel all the way to air box, hi-flow lid and 2 3/4 turbo intake pipes
 

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Next batch ready in a few weeks. $395.00 inc. express postage. Contact [email protected]
 

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Wrong, this are flow bench tested items, i run one, i never did a dyno run, but i changed everything at the same time, 4" snorkel all the way to air box, hi-flow lid and 2 3/4 turbo intake pipes
Doing that changes everything, but just putting on one of these and making no other modifications is like adding a 3" piece of exhaust pipe in the middle of a 2" system and doing nothing else.

Cheers

Ray
 

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No its not Ray. What you are doing with your 3" piece analogy is decreasing and then increasing the speed of the gas flow which has a muffling effect but will create a loss.

The billet lid is eliminating the smallest and harshest restriction in the system. Fundamentally different.
 

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No its not Ray. What you are doing with your 3" piece analogy is decreasing and then increasing the speed of the gas flow which has a muffling effect but will create a loss.

The billet lid is eliminating the smallest and harshest restriction in the system. Fundamentally different.
The harshest restriction is the air filter, plus any significant right angle bends and other restrictions in the system. Unless you change the pipework going into the filter and the pipework going from the filter to the turbo, all you are achieving is exactly what my analogy stated. And using a Donaldson air filter for the flow bench testing does not test the system in real world applications. The flow improvement with the Donaldson is approx 15% (only at the filter assembly), will it be this much with a Nissan filter?

As part of a completely modified system, this component may work very well. On it's own, with no modifications to the air intake system, I simply can't see that it will provide substantial performance improvements. I'm not saying that it cannot work, but on its own, I see it as pretty limiting.

Cheers

Ray
 

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The harshest restriction is the air filter, plus any significant right angle bends and other restrictions in the system. Unless you change the pipework going into the filter and the pipework going from the filter to the turbo, all you are achieving is exactly what my analogy stated. And using a Donaldson air filter for the flow bench testing does not test the system in real world applications. The flow improvement with the Donaldson is approx 15% (only at the filter assembly), will it be this much with a Nissan filter?

As part of a completely modified system, this component may work very well. On it's own, with no modifications to the air intake system, I simply can't see that it will provide substantial performance improvements. I'm not saying that it cannot work, but on its own, I see it as pretty limiting.

Cheers
Ray


on a factory 4.2 the air box lid is a restriction at anything over factory boost just fitting the 3l lid is a vast improvement so there are definite gains when fitted to a 4.2 with no other mods on a 3l i would be curious to see if there were any real world benefits
 

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The harshest restriction is the air filter, plus any significant right angle bends and other restrictions in the system. Unless you change the pipework going into the filter and the pipework going from the filter to the turbo, all you are achieving is exactly what my analogy stated. And using a Donaldson air filter for the flow bench testing does not test the system in real world applications. The flow improvement with the Donaldson is approx 15% (only at the filter assembly), will it be this much with a Nissan filter?

As part of a completely modified system, this component may work very well. On it's own, with no modifications to the air intake system, I simply can't see that it will provide substantial performance improvements. I'm not saying that it cannot work, but on its own, I see it as pretty limiting.

Cheers

Ray
I could give a fig about a donaldson.

You have seen one of these lids and still written the above?
 

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