Guest KDW Posted March 2, 2008 Share Posted March 2, 2008 My filter is due for a change pretty bad, but I don't want the HKS unit on there anymore. I would like something that will actually filtrate and not letting crap into my engine like the HKS does. But in the same time it has to be free flowing enough to support 900+ BHP. As you can see from the picture below there's not a whole lot space to work with, but surely I cannot be the first guy to be in this situation right, so what do people usually do? I checked out KN but it seems they don't even have a filter that will support those kind of numbers, at least not in a size that will fit into my engine bay. http://peecee.dk/uploads/032008/DSC00463_big_thumb.JPG Quote Link to comment Share on other sites More sharing options...
jevansio Posted March 2, 2008 Share Posted March 2, 2008 I went from HKS to K&N to support my needs, the filter I was recommended by them supports 400 bhp for an NA engine (which equates to 800 bhp for a forced induction engine), & they have bigger. Try contacting K&N direct to see if they can support 900 bhp (you did realise the figures they quote differ between NA & forced induction engines?). Are you managing 900+ through the stock inlet manifold OK? Also are you managing 900hp+ through that filter, I didn't know 1 HKS mushroom could support that much airflow? Quote Link to comment Share on other sites More sharing options...
Nic Posted March 2, 2008 Share Posted March 2, 2008 I can't see the photo properly. What about one of these M's Super Filter http://www.gruppem.co.jp/pr_images/fhc_cutmodel_en.jpg Blitz Sonic Power http://www.blitz-uk.co.uk/images/products/productimages/main/Sonic_P1.jpghttp://www.blitz-uk.co.uk/images/products/productimages/main/SONIC_P2.jpg Quote Link to comment Share on other sites More sharing options...
Guest KDW Posted March 2, 2008 Share Posted March 2, 2008 I didn't realise that KN quoted N/A's and that it would differ that much from F/I. Thats a good thing, I guess it won't be a problem then. I saw a KN filter quoted at 600hp. I'm not making 900 on stock inlet, best was 841 bhp on race fuel. Inlet is the very next mod though, so I want a filter that supports every little drop of juice I can squeeze out of this tubby. Quote Link to comment Share on other sites More sharing options...
Guest KDW Posted March 2, 2008 Share Posted March 2, 2008 Nic: That looks plain silly IMO, not my taste. Quote Link to comment Share on other sites More sharing options...
hiten55 Posted March 2, 2008 Share Posted March 2, 2008 Nic: That looks plain silly IMO, not my taste. i'd listen to him mate, he knows his stuff Quote Link to comment Share on other sites More sharing options...
jevansio Posted March 2, 2008 Share Posted March 2, 2008 Nic: That looks plain silly IMO, not my taste. I would definately give them a ring, explain your goals & they should be able to suggest a filter to suit. It will probably be one of those long cones, which will mean shortening that black intake pipe, but it looks like you have quite a bit of free room in that area. A cold air box for it (with cold air feeds) would help too IMHO. Sounds impressive though mate Quote Link to comment Share on other sites More sharing options...
Wez Posted March 2, 2008 Share Posted March 2, 2008 Most filters with a 4" inlet will be ok for your needs, K&N, AEM and Pipercross all do off the shelf cones with this neck diameter. My K&N split as did a few other members, some replaced with AEM units, I currently use a Pipercross unit. Nic, do those filters have a 4" inlet and outlet? Quote Link to comment Share on other sites More sharing options...
Pig Posted March 2, 2008 Share Posted March 2, 2008 I use an AEM cone unit and seems fine Quote Link to comment Share on other sites More sharing options...
Nic Posted March 2, 2008 Share Posted March 2, 2008 Nic, do those filters have a 4" inlet and outlet? Yup Quote Link to comment Share on other sites More sharing options...
_Shane_ Posted March 2, 2008 Share Posted March 2, 2008 to accomadate a bigger filter mate you could always trim back the induction pipe a bit to allow u put in a bigger filter. Could ya not run a filter say straight off the turbo itself ? Quote Link to comment Share on other sites More sharing options...
Ark Posted March 2, 2008 Share Posted March 2, 2008 You could always tape an old pair of tights across the inlet - low cost, low restriction and about the same filtration performance as the HKS Quote Link to comment Share on other sites More sharing options...
Max Headroom Posted March 2, 2008 Share Posted March 2, 2008 You could always tape an old pair of tights across the inlet - low cost, low restriction and about the same filtration performance as the HKS I was going to say that too Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted March 2, 2008 Share Posted March 2, 2008 I take it we are talking american horse power here. There is no way that turbo is big enough to push a real 840 horses out. AFAIK the stock manifold won't flow that sort of air either. I don't see any major fuel lines coming in either. I see also that you have the old style HKS cam gears that wear out and shred cambelts. Quote Link to comment Share on other sites More sharing options...
Nic Posted March 3, 2008 Share Posted March 3, 2008 I see also that you have the old style HKS cam gears that wear out and shred cambelts. Mine have been on the car for 6 years, last time I checked there was very little wear. Quote Link to comment Share on other sites More sharing options...
Guest KDW Posted March 3, 2008 Share Posted March 3, 2008 Dangerous Brain: What is the purpose of your post? If you're not going to contribute to the topic then please don't post.. But just for the record, no it's not US HP, it's Danish and it DOES in fact push 840bhp. stock inlet, modified stock rail w/ 1000cc injectors & dual walbro's. BTW, the picture is old, it's from when I picked it up in UK last year. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted March 3, 2008 Share Posted March 3, 2008 Okey dokeys. You are pushing 840 horses out of stock fuel lines and the stock manifold... Fair enough someone want to sell this man a 900 horse power filter as he clearly needs it then. My point my good man is that my car was advertised as a 600 horse power car. Funnily enough when dyno'd its actually only 460. If I was to go around wasting my money on products for a 600 horse power car I'd be relieved of my money for no good reason. If you had a built engine, with a larger freer flowing manifold, a totally upgraded fuel system etc etc then yeah you'd also need an air filter to go with that. If you had spent that sort of money on a motor to get that sort of power you wouldn't really need to be asking about an air filter as you'd already have at your disposal very good solid advice from the people that built the car. But if you like spend your money how you want. Quote Link to comment Share on other sites More sharing options...
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