RCM is mostly used with big success like by tuners and customers with big power cars.Its something like icon in Air filter here in UK...
RCM replacement cost around £60-£70,RCM said is special designed by RCM made by K&N,you can try buy one from K&N,i've tried buy one similar but K&N said these only do for RCM

With your suggested air filter,will need first fit and mapped and you will see what will be,because i never tried this shape on car,its just guessing game now.

As i said before everybody using same shape due are proven,and many people don't like tested unproven things...





Jura

 

thanks jura,im going to speak to rcm and see what can be done.

 

Don't worry,you don't need RCM big cone to buy,just something similar will o job nicely(same size and length),just have look at OpieOil for custom cone and you will see what can be done.


Jura

 

Aem/KN's dryflow (no need to oil and better filtration) filters are nice and the 9" ones with 4" inlet will support up to 1000 hp.

 

i spoke to rcm and they can probably supply me the cone and trumpet for a good price,all i will have to do is get my brother to make an adaptor plate and will leave the maf and oe intake where it is,this filter will be fine even at 500bhp and will cost only a fraction more of the original plan.
thinking this is probably the way to go now.

 

That's the great matey,they're mostly used at 400bhp+ engine build mostly,i'm using this.


Jura

 

That RCM cone is very expensive, for what is essentially a different shaped K&N. I think mine (K&N) cost about £20

 

the induction kit consists of a couple parts which add huge cost to the filter.
im going to see if my brother can make the required parts and make my own kit to suit the rcm cone.

 

RE - RCM induction kit - Talk to Harvey Smith

JohnD

 

I did... and had to run for cover

 

have had a chat with rcm,my brother is confident he can make a custom adaptor/trumpet,will be able to leave the oe pipe in place and fit an rcm induction kit but without spending silly £££s.
very handy having a brother that is a fully skilled welder/fabricator for stainless steel and alluminium.
he should be able to determine by tommorow wether there are any complication but i have every faith in him
once its all done and we have fitted the fmic/induction and cold feed ill post up some pics.

 

 

Can i ask, when you say the car needs be re-mapped after fitting induction kit ect. Do you need to do it straight away or can you run car without? Reason i ask is i got a k&n typhoon kit for my wrx and i want to fit it but wait until my exhaust system done too before i get it mapped, would that be ok? What will happen if i fit k&n without map?

 

Just don't drive it hard until it's mapped. Keep it out of any meaningful boost to be on the safe side.

JohnD

 

The reason for running a large filter is so that you have a big filtration surface area. This serves two purposes.
1) Rather obvious, it takes longer to clog up so you clean less frequently or it is longer before the clogging becomes restrictive.
2) The objective is to fit a filter that is large enough to result in minimal depression or vacum in the inlet tract. The impellor on the turbo has to act against any depression which can be signifigant at high load/power with a small fiter and eliminating this sucking improves performance.

Equally important is smooth air flow into the inlet tract. This is especially important when running a MAF Sensor. This is the reason for using an aluminium trumpet.

If you alter your induction you will alter the way in which the air is presented to the Mass Air Flow Sensor. Do a really effective improvement, even without a MAF Sensor and the air volume could increase noticably. This could have a very signifigant effect on AFRs and if you run weak you could nip a piston in the bore or induce DET, neither of wqhich are good things and could cost you an engine.
As John says above, keep it off boost until remapped.

Lastly, if you are building an air box or induction system, remember aluminium is a very good heat conductor and heat at the filter is to be avoided. Look at thermally insulating surfaces exposed to heat. Carbon fibre is also easy to work with, has better insulation properties but still needs heat insulation.

 

cheers harvey,i can see the reason and why the trumpets are spun from alluminium,and also understand why there needs to be smooth flow to the maf,i am also well aware of remap once this is fitted along with fmic.
as regards to a "partition" in the engine bay,we were considering using stainless steel,and using it more like a heat shield to keep the hot air away from filter rather than an enclosed area,any thoughts?
thanks.

 

^ any kind of metal is the perfect conductor of heat from the engine into your precious space...

Better off using carbon fibre, or something a boat builder told me, a heat protective liner used in marine cooking areas, you can attach this to the metal separator

 

Cant help feeling that a shiny s.s induction kits looks great but as you say above, it conducts alot of heat so defeating the object.

 

My heat barrier is ally but completely wrapped in this stuff

I doesn't get hot

http://www.agriemach.com/product_inf...psvu1750bdilb5

 

The boater told me one side can be super hot and the other cool

Not sure if it's shuttle re-entry proof mind

 

....this is now the next part that i need to look into as the adapter is now underway!

 

A stainless steel shield will not "keep heat away" from the cone unless there is positive pressure in the filter area from a cold air feed. The stainless, which is a good conductor would act as a heat sink and would need to be thermally insulated.
Carbon fibre is much easier to work with and has a degree of flex. I would also thermally insulate the side of the carbon fibre facing the engine bay with reflective heat blanket insulation material. A vertical barrier/divider from the driver side chassis rail up to the bonnet will be far more effective, especially if you feed more air into the filter area than the engine consumes.

 

Can you get some pics up please Harvey?


Thanks

 

So no nice shiny induction kit for me then 

 

you can use a "shiny" induction kit....just make a cold air feed for the filter!!