Induction Kit

Fast Eddy · Post by **Fast Eddy** » Thu May 17, 2007 11:55 am

Dunk,
I could prob do you a similar bespoke kit FITTED for around the price of these kits!
Eddy

martin · Post by **martin** » Thu May 17, 2007 2:20 pm

Dunkan i have all ways been a bit wary of fitting oil covered filters with a MAF sensor as i have seen so many of these fail on different cars due to oil contamination try and get a non oil covered one

duncan · Post by **duncan** » Thu May 17, 2007 2:27 pm

my current Green Air filter is oil covered - no probs with that.

A lot of people say to avoid them on the impreza but the only examples of failure I have seen have been on classics.

Jakester · Post by **Jakester** » Thu May 17, 2007 2:37 pm

A friend of mine in the states has an enormous amount of Perrin stuff on his Legacy GT, rates it all very highly, nothing wrong with K&N products though.

Bladerider · Post by **Bladerider** » Thu May 17, 2007 2:40 pm

Option D ???

Only air filter I will ever use now is Apexi. They have almost as good flow characteristics as HKS - which have the highest - but with the best filtration available. My 2530's on the bomber had pitted compressor blades due to particulate damage after only 1000miles or so with the HKS ones, on noticing this I thought I would ask someone I trusted and when questioned the very reputable tuner said "All the HKS ones do that, but then thats the price for the most horsepower, Apexi is what I have on my car as they are almost as good for power but eliminate pretty much all the conataminants"

I have run only Apexi since on all my cars.

Just food for thought mate.

J.

Lloyd@JRD · Post by **Lloyd@JRD** » Thu May 17, 2007 2:53 pm

The filtration is very good with the Apexi's due to the element being cotton. Thats also the same with both the APS and K&N.

As James mentioned, the HKS offer the best flow, but the filtration and breakdown of the element are key issues.

Fast Eddy · Post by **Fast Eddy** » Thu May 17, 2007 9:24 pm

Agreed,
HKS foam has a bad reputation for filtration. I think they have a new foam composite now, but another problem i have found is that the foam creeps and you end up with gaps around the edge that crap can get through.
Apexi are vey good.

Dunk, i will do you a kit using whatever filter you like. I have 70mm silicone bends and pipework in stock. I can run it to where you want it in your inner wing.
Eddy

duncan · Post by **duncan** » Fri May 18, 2007 7:01 am

Fast Eddy wrote:Dunk, i will do you a kit using whatever filter you like. I have 70mm silicone bends and pipework in stock. I can run it to where you want it in your inner wing.
Eddy

Thanks for the offer Eddy - I am just a bit hesitant on this because of the MAF sensor housing that would need to be made up. If got wrong it could have disastrous consequences and I wouldnt want to start blaming you. With something pre-built, length tuned and tested I can be relatively relaxed and non paranoid about it. I hope that makes sense and you understand.

The more I read about the APS kit the more I like it.

RX7 · Post by **RX7** » Fri May 18, 2007 7:12 am

Agreed with the foam comments for HKS filters. The only reasons I went for the HKS Racing Suction induction kit I have on mine is that it replaces all the intake pipes, whereas the Apexi is just a bolt on cone filter.and the FD has 2 turbos therefore 2 cones (obvious I know!) and with the HKS kit they are mounted straight towards the front of the car. On the Apexi one of the cones is angled so it is behind the intercooler and above the radiator....not a cold place as you can imagine !!

Have been looking to replace mine in the future though.

I think with HKS if you are prepared to change the foam every couple of years and I always give it a spray with some K & N filter spray before fitting and every 6 months. Should be fine then.

Cant see any reason why the K&Ns should be any different than the Apexi though as I think the cones are made out of the same material.

Am a sucker for polished piping in the enginebay though so the K&N gets my vote !!!

Lloyd@JRD · Post by **Lloyd@JRD** » Fri May 18, 2007 8:01 am

RX7 wrote: I think with HKS if you are prepared to change the foam every couple of years and I always give it a spray with some K & N filter spray before fitting and every 6 months. Should be fine then.

I would change them alot sooner than 2 years. We always replace the element on an HKS as part of the service (4500 on an evo) :-D