How To Build a Cold Air Intake Evo IX

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JSTYLE

I AM THEEE DYNO QUEEN!
Joined
Mar 29, 2005
Messages
4,565
Location
Melbourne, Australia
Description:

Relocating the intercooler reservoir and mounting the pod filter in the inner guard. Making a cold air induction system using the passengers side lower vent feeding 125mm duct into the pod filter.

Purpose:

To relocate the air filter so that it is not in the engine bay and drawing hot air. It will be relocated to where the intercooler spray reservoir use to be. The intercooler spray reservoir will be relocated using an APS made unit.

In theory the pod filter will be drawing in plenty of cold air from the lower air damn and this should create better intake temperatures.

Parts Needed:

* Pod Filter (pref stainless steel)
* Alloy pipe 76mm
* 76mm Straight Silicon Joiners
* 76mm 90 Degree Silicon Joiner

Cold Air Intake:

A Friend
Wide air intake
125mm Round Duct joiner
1.5m x 125mm Duct
Duct tape
Cable ties
Custom mounting brackets
Black Spray can

Parts Cost ~ $190
Estimated time to be used: 4hrs

I will list instructions once i have completed it.
ETC: This weekend ~7th Feb 2010

Before Pictures:

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Jon
 
Looking forward to the instructions. Might have to do one of these with the hot weather not helping the car atm....
 
looks cool... but i still think that without a fully enclosed box u will have two problems

1) cops will defect ya as an open air filter
2) hot air will be comming in as 180* of the cone filter is open and not close to the filter.

btw i dont see a MAF there? what ecu u running???
 
You might want to consuder getting a hard type plastic duct.
Stone chip will easily destroy that foil type duct.
 
ziad said:
looks cool... but i still think that without a fully enclosed box u will have two problems

1) cops will defect ya as an open air filter
2) hot air will be comming in as 180* of the cone filter is open and not close to the filter.

btw i dont see a MAF there? what ecu u running???

The air pod will sit in the inner guard.. it wont be in the engine bay compartment and the air filter is not an oiled element so it is a ok.!
There will be a piece of alluminium sheet metal covering the hole where the intercooler reservoir use to sit so it will have a 3' hole cut into for the air filter piping to go into so it will be pretty much enclosed from the hot air the engine bay is creating!
The duct will feed directly to the pod filter! Not to mention that the vent compartment will act as an enclosed box only drawing cold air!!!!

In theory it should work wonders!

Jon
 
I had severe engine cut outs when I first got mine because the element wire in the air box was a slightly dirty. The car would jolt, shudder and struggle to idle.

I ended up fixing it by cleaning the wire with spray from Autobarn for $15, after which it purred like a kitty.

Does anything special have to happen when replacing the original air box? Doesnt it plug into the engine management or something from memory?
 
thats only the air flow meter which is removable from the air box itself so you can fit up a pod or cold air box. i think jons has a motec so it doesnt need the airflow meter as it runs a map sensor instead.

my car is the same and so is dans with the aftermarket ecus we run you dont need the airflow meter anymore
 
i didnt do a write up.. well i had forgotten when i had taken the turbo/front bar off etc.. but here are the pics of the finished product.. i think it looks pretty good.

Jon

snc00130x.jpg

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Yeh looks nice johny, good work.

the evo-oz guys might not be happy though, you didn't spend a min $200 and dont have at least 0.5m^2 of carbon fibre :p:p
 
thanks guys... haha it took abit of time and mucking around but its turned out to be roughly what i wanted.. all up cost just under $100 in parts.. but i have surplus parts cos i had to buy the min amount.

Jon
 
if you have put the filter behind the duct in the front bar, where cold air is already going straight through, what's the point of making the ducting pipe? it wouldnt really be achieving anything would it?
 
evopwr said:
Yeh looks nice johny, good work.

the evo-oz guys might not be happy though, you didn't spend a min $200 and dont have at least 0.5m^2 of carbon fibre :p:p


rotfl... u can buy 3M CF wrap... that should get u to the required 200 depending on who u get it off :)

maybe thats why he only posted it here. there is a similar one on evooz, but i think johns better as he made a proper air collector..... i presume that the cone filter lives under the AL plate.
 
GSRSOL said:
if you have put the filter behind the duct in the front bar, where cold air is already going straight through, what's the point of making the ducting pipe? it wouldnt really be achieving anything would it?

I think it will achieve more then just plonking the filter into inner guard. For start you will not beable to see the air filter because the vent/duct is hiding it. And secondly it diverts ALL the air from that vent into 1 spot where the filter sits so your getting 100% air from the vent instead of say maybe just 70% cos its just sitting there.

Jon
 
ziad said:
rotfl... u can buy 3M CF wrap... that should get u to the required 200 depending on who u get it off :)

maybe thats why he only posted it here. there is a similar one on evooz, but i think johns better as he made a proper air collector..... i presume that the cone filter lives under the AL plate.

yerp thats correct, theres going to be an alloy plate that will sit ontop of the rail/behind the headlights.. with a 3' hole in it.. so when you look into the engine bay you cannot see the filter either and plus it will enclose the inner guard so its like a 'box'

Jon
 
this is what it currently looks like.. as you can see its still a good ram air feed for where my pod is atm.. however that will all change once it goes down to trikfab to get an alloy plate to cover the hole with a 3' hole for the alloy pipe to feed into.. obviously the pod will be hanging off the pipe.. so nothing to see :)

snc00154n.jpg


Jon
 
hey jon... i was wondering how u moved the ICS bottle to boot... can u put up a cpl pics... or do u just tap into the wiper bottle??
 
ziad said:
hey jon... i was wondering how u moved the ICS bottle to boot... can u put up a cpl pics... or do u just tap into the wiper bottle??

i will disclose all of the setup in due time grasshopper be patient its a pretty good.. well i think it is... :)
looks EL stock officer!

Jon
 

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