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Discussion Starter · #1 ·
I just read over 50 different posts on the free WAI mod. I was wondering, what are the side effects if the tape comes off? Also, is there an alternative to taping the hole? How big of a difference is there when using the stock air filter and replacing it with another one? And finally, I'm assuming you can only pick between doing this and adding a CAI, is that assumption correct, or can you have both? Thanks.
 

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Discussion Starter · #3 ·
Yeah that is one solution, but I do not want to go through all that (taking off the tire, etc), for reasons like when I need to put it back for warrenty work. I know you posted that thread on this free WAI, so I figure you're probably the best source for the answers to my other questions. Do you think you, or someone, could give an answer to all of them?
 

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Junkyard said:
I was wondering, what are the side effects if the tape comes off? - - If the tape came off, it might fall out the front hole, or suck up onto the filter that you have. It wouldn't suck up into your intake though. I'm sure the power difference from taping and not taping might be less than 1HP, since modifying the intake breather in any way usually results in 5-8 HP increase for the most expensive intake.

Also, is there an alternative to taping the hole? - The alternative would be to remove the resonator in the fender well or just leave it untaped, but you are now having some of your air go down into that chamber and not all of it going into your intake manifold.

How big of a difference is there when using the stock air filter and replacing it with another one? - Once again, probably 2-3 HP if you are to use a drop in K&N filter that is the same size as the factory filter. Also, this type of filter does not void the warranty. You are just using a servicable filter rather than a throw away filter.

And finally, I'm assuming you can only pick between doing this and adding a CAI, is that assumption correct, or can you have both? - If you are getting any warm air (or engine compartment air) into your intake manifold, then you are not running a COLD air set up. So, if you were to run a pipe down into your fender well and also have it "T" and have another pipe open in your engine compartment, you I guess have a set up that is like both, but you are really still getting warm air. (WAI) So... If you want a CAI (cold air setup) you must isolate your air box opening to only taking in air that is coming from outside the engine compartment. There are lots of threads on this.
 

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Discussion Starter · #5 ·
Thanks a lot for all your help Altima2002...I'm a "newbie" when it comes to car stuff, so it was really helpful. I have one final follow up question.

Do you recommend this free WAI, or is it worth my while to purchase a CAI system and have it installed? I'm looking for maximum performance, and if the CAI gives a significant increaes over teh free WAI, I'd like to know.
 

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Junkyard said:
I'm looking for maximum performance, and if the CAI gives a significant increaes over teh free WAI, I'd like to know.
To me, I don't think it would give you $150-$200 much of a significant increase.

Someone dynoed thier car doing the free WAI thing and it increased their HP by 7 percent by just taking off that front air piece.

I would think a K$N cone filter set up might give you 9-10 HP increase. So, are you going to be doing track runs where your 10ths and 100ths of a second are going to count? You may want to pay $200 for that extra 3-4 Horses.

I personally am going to stick with the free set up and go with an aftermarket exhaust.
 

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Discussion Starter · #7 ·
Couple more questions I forgot to put in my last post Altima2002...you said if the tape comes off, it will fall out of the front hole or get sucked in. I'm not too sure what the side effects to those are, but can it be sucked into my engine or any place that will create problems while I'm driving or in the future? Or will I have access to the tape, and be able to pull it out from wherever it was sucked into? Also, I was looking over your instructions again, I'm not supposed to put the air scoop back on, correct? Just take it off, tape up that one hole, replace the air filter, and that's it, right?
 
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I have a dumb question. In my contour, the air intake and resonator were located in the left fender. When I put on my cone filter (known in the contour circles as a KKN intake) I also modified it a little to pipe it up to the hole in the fender. This helped reduce the heat sink problem (oh, used a pvc piece of pipe without any problems).

So my question is, what exactly does the resonator do. Is it like the one on the intake under the hood that has that attachment (I assume to collect water) or is it connected to outside aire someplace. I get the feeling that the only thing that does is give the intake a place for excess air to go (due to the ram air effect of the underhood scoop) to minimize the potential of trying to jam to much air into the intake under different speeds. Also, if we don't tape it over, is ther a downside? Is there a positive reason for taping over the hole?
 

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Discussion Starter · #12 ·
Altima2002, what is a good price for the K&N filter? I have the part number, and I will probably buy it, but I don't want to overpay. Where do you recommend I buy it, and for how much?
 
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