p1tse

couldn't really find a thread about this, so asking opinions, or are people just going to say JWT pop charger?

this looks a better build and kit though

2004Black350z

iTrader: (37)

so many threads about CAI. Id say look......fast. I had Nismo CAI and now popcharger and ill stay with the popcharger. Hope u have ur suit on

davidv

iTrader: (2)

Which k&n typhoon? What series? Need a photo.

p1tse

for an early model.

i tried to search k&n but nothing, but have tried typhoon so reading some old threads

3FIDDYZED

iTrader: (2)

Got one on mine mate, great peice of kit, loads of info on here and the UK sites....

You get a kit with the typhoon and just a filter and heat shield with the Poopcharger...

Dynamicperf

Both the K&N and the JWT utilize poor performing oiled cotton gauze. The restriction tests are very close since the material used is virtually identical. Both become quite restrictive as loading (dust) occurs. Both allow way too much particulate to pass into the engine since there is no place to hold this dust in the thin gauze. The cleaning/oiling is a separate concern.

The bottom line is: Avoid using cotton gauze and foam filters on your 350Z.

Review the efficiency information and consider what these filters allow to pass into your engine. Now consider that you can have high flow and unmatched engine protection. Remember, gauze filter products are cheap for a reason.

You just have to make the choice that's in your best interest.

3FIDDYZED

iTrader: (2)

Interesting..... Thanks for that... So in your opinion what would be a more suitable setup thats not stock / Gauze / Foam?

WTX350Z

iTrader: (8)

dunno what a R2C is...but I run Amsoil.

blasian

iTrader: (29)

I replaced my K&N filter with a dry element Amsoil filter

I like the K&N Typhoon more than the Pop Charger. I'll be getting some dyno sheets up soon to help the curiosity.

3FIDDYZED

iTrader: (2)

Cheers guys, anyone know what size Amsoil filter fits the typhoon?

Just did a google search for Dry Elememt cone air filters and didnt come up with much... Anyone know any other manufacturers that I may be able to get in the UK / Europe?

Cheers

WTX350Z

iTrader: (8)

Not certain that they make "generic Cone filters" like K&N. they are more into OE replacement AFAIK.

Dynamicperf

If you would like to see filter restriction test results, let me know by PM and I'll send the results. The AEM and Amsoil are included.

I'd post them in an attachment but it's an Excel file.

Thanks
Dynamicperf

blasian

iTrader: (29)

Bah, I can't remember what the part number was. I'd have to check when I get home.

davidv

iTrader: (2)

Interesting numbers but there is no reference. No test methodology. No date.

davidv

iTrader: (2)

Additional Information Location:
Rock Island



Welcome. Do you drive a 350Z?

p1tse

interesting read. so the popular ones aren't as good then?

would be interesting to see the more recommended alternative induction kits options?

Z1 Performance

iTrader: (564)

All air filters are made of inexpensive media....every single one. That is why At the end of the day, whether you use foam, or cotton, or what have you, they all limit flow when they are dirty - there is no way around that, even if you use the greatest filter in the world. Each type also works just fine, and have been proven for years and years, for millions of miles. The best air filter is a clean air filter. Whether you use a dry type, or a wet type, or a foam type - each one is widely used in real life, motorsports, etc, and at the end of the day the "preferences" come from exactly what you're doing - marketing.

So now why don't you reveal your agenda here, since every single post you've made has had the same exact theme to it.

David - thank you

gothchick

iTrader: (12)

Hmmm - I smell a conspiracy brewing on teh interwebz... Lol~

Dynamicperf

David,

I'd be happy to address the points you made in detail. If you would like an explanation from a design and engineering standpoint, you can PM me and we can speak on the phone.

All air filters are made of inexpensive media....every single one.

The difference in media is significant. Inexpensive, I guess in terms of other products and materials that may be true. With respect to cotton gauze, it was never designed to be an engine air filter media and the test results available certainly support that claim. Once again, I can provide anything you feel is important in helping you to understand this. Gauze is used because it's cheap and the vast majority of companies can't design and engineer performance filter media. Simply a me too concept.


At the end of the day, whether you use foam, or cotton, or what have you, they all limit flow when they are dirty - there is no way around that, even if you use the greatest filter in the world.

Technically, that true. As loading occurs, the restriction level will rise in every filter tested. The important factors here are how much and how quickly this restriction rises and how it affects engine efficiency. Let's look at another vital factor. While these filters load (get dirty) we understand that this restriction level changes, but what happens to the particulate that begins to accumulate? Inspect a cotton gauze filter closely and ask yourself where can all this dirt be stored? Particles don't hang out here forever. Forces begin to act on these nomads and then they leave. There is only one place to go and that's into the combustion chamber/cylinder and into the oil.
So let's examine a quality filter media that's appropriate for engine air filtration. The media must be designed with many factors in mind. In a high performance filter, end users expect low restriction and quality air flow. I think it's safe to say that they would also prefer not giving up quality engine protection if a choice was presented. So, low restriction is paramount. How can we design and engineer a media that will allow incredibly high flow (easy) and still offer uncompromising engine protection (hard)? That engineering task lies in the amount of void, size, depth and structure of these fibers. There have to be many voids that allow for air to travel through this random fiber structure and also provide every opportunity to trap micron size particulate and HOLD it for a reasonable length to allow normal maintenance to rid these variable voids of this particulate. Cotton gauze is very poor in terms of this vital responsibility.

Now we have a little better understanding of how this new media can provide maximum air flow and low restriction and still protect your engine.

Each type also works just fine, and have been proven for years and years, for millions of miles.


Why is the filter necessary at all? What was it designed to do?

I don't think each type works just fine. While we addressed that a compromise exists, let's work towards mitigating this level of compromise. If we agree that the filter is necessary, why not maximize each category of measured performance? Will the gauze filter cause a catastrophic failure? How can we be sure? Based on years and a wide variety of testing filtration, it is clear that more potentially damaging particulate is allowed to enter your engine when equipped with a gauze filter. In actual testing, that number can be from 15 to 21 times more dust than when equipped with a quality filter media. It's reasonable to assume that this can only have a negative effect on internal components and thus longevity. Why deal with it when it's no longer necessary?


The best air filter is a clean air filter.

That's generally true! How often is our filter clean? How do we measure clean? How often are owners removing these oiled gauze filters and performing this required maintenance in order that the filter remain clean?
Why deal with this process and the uncertainty if it's no longer necessary?


Whether you use a dry type, or a wet type, or a foam type - each one is widely used in real life, motorsports, etc, and at the end of the day the "preferences" come from exactly what you're doing - marketing.

You would be stunned at what we have found in terms of the issues even prominent race teams have been dealing with over the years. These compromises have certainly impacted their platforms. Unfortunately, they had no real alternative.

Marketing has nothing to do with an engineering evaluation. It's time to ignore marketing and approbation and analyze these facts and make a decision that's in your best overall interest. Improvements in product technology occur each day. I'm sure you spend quite a bit of time seeking out the finest cutting edge products and technology for your clients. It's up to us to take advantage of them if we perceive a benefit.

In any case, it's vital that owners are provided with accurate information in order to make an educated decision.

2004Black350z

iTrader: (37)

Cliff Notes