K&N Cold Air Intake system

JonnyG

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Just referred to it and was just posted - stock our cars are 13 second 60-130 at least mine was 12.99. Curious what it will be with 3" Intakes, 3" LDP's , 3" Catback and tune on 93. Hope its 10 because 13 is freaking slow

Screenshot 2025-04-11 215117.jpg
 

5thZ

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Just referred to it and was just posted - stock our cars are 13 second 60-130 at least mine was 12.99. Curious what it will be with 3" Intakes, 3" LDP's , 3" Catback and tune on 93. Hope its 10 because 13 is freaking slow

Screenshot 2025-04-11 215117.jpg
Just DM'd you.

I'm not used to 60-130mph but that is about what the back stretch at road atlanta got me to in a previous car. If we could speed that up that would be amazing.
 

Hernandooo

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Agreed but that not is heat soak from an open intake. That is caused by pure engine heat soak. The heat exchangers are undersized for 1320 or road and for warm climates. I would go AMS or concept Z myself. Tuners like Sonictuned (my tuner) and Go Racebox are experimenting with systems now before opening motors up to see on stock blocks with injectors, HPLPFP's, injectors, ethanol how much they can get. Go Racebox is saying they just have a 740RWHP on stock motor. Sonictune is just about ready with icebox, and heat exchanger off a GT500 and more to go testing with his own car. Again, strickley speaking about open intake NO WORRIES about heat soak and you will love the noises - you'll forget about not having atmospheric BOV's
As you stated the heat soak is coming from the engine itself. Unless you have a barrier or box enclosing the the intake, those pods just gonna suck hot air from all 360°.

You can still hear a significant difference from upgrading your intake from oem

To each there own, I prefer to hear the turbo spool/whistle and diverter valve swoosh. The intake sucking is meh, over rated at best
 

5thZ

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As you stated the heat soak is coming from the engine itself. Unless you have a barrier or box enclosing the the intake, those pods just gonna suck hot air from all 360°.

You can still hear a significant difference from upgrading your intake from oem

To each there own, I prefer to hear the turbo spool/whistle and diverter valve swoosh. The intake sucking is meh, over rated at best
Did you go with the z1 diverter kit or bov kit? In my manual Z I can't hear anything tbh.

Edit:: I was a hater but I've heard the sound clip from JonnyG and it does sound really nice
 
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Hernandooo

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Hernandooo

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I just watched the video, and it sounds great. I had thought that one of the benefits of the factory recirc valve was better low RPM boost, if you change to the turbosmart, does it negate that effect with low RPM boost?
Haven't noticed a hindrance at low rpm, she still rips
 

ljpetraska

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I’ve started to look at CAIs but this sounds like a total pain to install for very little benefit. I was leaning towards the Nismo CAI personally. Does anyone know if installing that one voids the warranty? I’m concerned that the K&N one would and I haven’t had good experiences with those in the past. My stepson put a K&N CAI on a 22 Corolla and it messed with the MAF so much that it would go into limp mode.
 

Hernandooo

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I’ve started to look at CAIs but this sounds like a total pain to install for very little benefit. I was leaning towards the Nismo CAI personally. Does anyone know if installing that one voids the warranty? I’m concerned that the K&N one would and I haven’t had good experiences with those in the past. My stepson put a K&N CAI on a 22 Corolla and it messed with the MAF so much that it would go into limp mode.
As far as im tracking, if you order nismo from your nissan parts and service, have them install it, it would be part of your warranty

K&N use a oil, which gets sucked into the manifold, causing the MAF to defect
 

5thZ

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As far as im tracking, if you order nismo from your nissan parts and service, have them install it, it would be part of your warranty

K&N use a oil, which gets sucked into the manifold, causing the MAF to defect
If you are in the USA there is nothing you can do to "void your warranty". In case a warranty issue arises, they have to prove that the modification caused the failure, and at that point they wouldn't void your overall warranty, but instead deny the warranty claim.
 

ljpetraska

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As far as im tracking, if you order nismo from your nissan parts and service, have them install it, it would be part of your warranty

K&N use a oil, which gets sucked into the manifold, causing the MAF to defect
This is my exact fear given that this already happened on the Corolla. The Z would likely handle it better but given that the Z is brand new, I don't want to worry about having a CEL appear thanks to the K&N oil. The Nismo seemed like a safer choice, granted it's more expensive and less prone to give you the sound of a CAI.
 

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If you are in the USA there is nothing you can do to "void your warranty". In case a warranty issue arises, they have to prove that the modification caused the failure, and at that point they wouldn't void your overall warranty, but instead deny the warranty claim.
I had something really sarcastic written. Then I just decided to repost this. Because this is the truth about US warranties.
 

NocturnalEmber

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As you stated the heat soak is coming from the engine itself. Unless you have a barrier or box enclosing the the intake, those pods just gonna suck hot air from all 360°.

You can still hear a significant difference from upgrading your intake from oem

To each there own, I prefer to hear the turbo spool/whistle and diverter valve swoosh. The intake sucking is meh, over rated at best
Basic thermodynamics. Granted that's not really something you will encounter unless you are pursuing some type of stem degree, but there's a reason decent quality intakes are insulated from ambient engine bay temps - the air is hot. Hot air is less dense, cooler air is more dense. By pulling in air closer to ambient temp as opposed to warmer air from the engine bay you are going to get better results.

If you are buying for show, yeah hp is irrelevant I suppose, but if you are buying for functionality, a sealed box by design is better.
 

ljpetraska

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Basic thermodynamics. Granted that's not really something you will encounter unless you are pursuing some type of stem degree, but there's a reason decent quality intakes are insulated from ambient engine bay temps - the air is hot. Hot air is less dense, cooler air is more dense. By pulling in air closer to ambient temp as opposed to warmer air from the engine bay you are going to get better results.

If you are buying for show, yeah hp is irrelevant I suppose, but if you are buying for functionality, a sealed box by design is better.
This is 100% why I went with the Nismo design. It was between that and the Boosted 6 setup. I LOVE the sound of it but I couldn't get past the heatsoak.

Time has proven time and time again that sealed designs work better. Dyno tests with an open hood and 4 industrial fans pointed at the engine bay don't mirror real world results.
 
 






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