I dont know how a cold air intake would be better closed. An Open air box has no restriction except the filter. Idk what the theory is on this but I love my K&N its only loud above 4k rpm its open and I did feel a bit of a diffrence in low end.

 

An open air intake might as well be called a hot air intake. At slow speeds and idle the intake would be sucking in hot air from the engine bay. I know if I were going to get an aftermarket intake I would go with a closed air box. You want to be sucking air in from outside the engine bay, not from within.

 

Very depends on what your looking for. Open CAI are mainly for Hp, in which you lose some TQ at low end. Closed CAI will help with the TQ at low end, But not much HP.
I'm running a Nismo (AEM) CAI, Before i put my exhaust, I've would of been able to hear the intake @ 2000 Rpms, the sound was like a whistle, Now with the exhaust, it really opens up @ around 4000rpms. I've always been considering in just closing up the top part of the box, and adding a "snorkel-like" tube to the front of the grille to somewhat create a cold air design. Might try it this week.
But IMO, if you really want a nice CAI, Go with Volant, I've heard nothing but good result with them. But than again, There's the Kool Vue intake, that's somewhat of both Open and closed designs. check it out for youself.
http://www.clubfrontier.org/forums/f11/just-got-my-kool-vue-intake-75-shipped-60470/

 

Not sure how some figure that an open system lets in hot under hood air. I see this posted here repeatedly. I have an "open" Nismo CAI, but it is form-fitted to the hood so when the hood is closed it makes a seal with the box, making it a "closed" CAI.

 

NISMO intake is pretty open isnt it? its not completely sealed in theres gaps all over. i was wondering if sealing up those areas would help though

 

^ Hood closed, it closes on top of the air box. The ridges of the CAI make contact, and follow the its contours, with the hood when closed. Not a perfect seal of course, but close enough in my book.

 

Hands down the Volant is the way to go for overall balanced performance. An Nismo/AEM may be better for straight HP but overall, Volant wins.

 

Sorry but the Injen > Volant.

The reason I can write that is because they are all tubes with filters on the end and it makes little if any difference which one you get. :nana:

 

 

I like mine cause its HUGE! and its got a heat sheild like you were talking about.. keeps the heat from the engine away and draws cooler air from the fender.. and its funny because from about 1k rpm to 3k i can hear my exhaust then after that all i can hear is the intake... its loud and i like it!

 

My closed box Volant was cool, made a noise along with the blower, but now that I switched to an open intake(no heat shield at all) its way better. I also have alot more open space for air to flow in so that helps at the lower speeds, but it still picks up quite nicely.

 

Thanx again for your help. Got the Brute Force cai and the DryFlow filter you recommended; cost me $261.25. Was best deal I could find and now await delivery.
Harvey

 

I got my K&N FIPK for $219. with free shipping on Autoanything.com

They Beat the best price you can find by 10%. I Found a coupon code for another site told them about it and they beat the coupon price plus 10% and gave me free shipping also.

 

Post up some pics and your findings after the install. Good luck.