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Elmo
29-08-07, 17:24
It has been established that the stock air box is better than a bolt on induction kit as it only allows cold air to be sucked into the throttle body.

Thinking about this, would it be possible to adapt the stock air box (cut a hole in it) to accept the aftermarket induction tubing/filter, this way you are getting the best of both worlds or, would you?

This may have been done or discussed before, but without looking deeper into it I don't see why it should work.

Any thoughts?

Chumpalot
29-08-07, 17:27
I'd like to get rid of my Blitz SUS induction kit and replace it with the stock airbox too. As you say though, the piping for the FMIC gets in the way and the box would have to be heavily modified somehow.

Gaz6002
29-08-07, 17:29
I will be using a stainless steel airbox with my single kit, designed to sit in the same place and using a TRD panel filter. I will report on the outcome.

robin
29-08-07, 17:30
can you not get a panel filter to go in the stock box? I cant help but think if a filter flows more air is must have less filtration though...

Elmo
29-08-07, 17:36
can you not get a panel filter to go in the stock box? I cant help but think if a filter flows more air is must have less filtration though...

Yeah, I could. But I assumed that an aftermarket induction kit would give better airflow.

Gaz6002
29-08-07, 17:45
Yeah, I could. But I assumed that an aftermarket induction kit would give better airflow.

Why? Why didn't Toyota use induction kits when designing the car? Because the stock system is more efficient?

colsoop
29-08-07, 18:00
Yeah, I could. But I assumed that an aftermarket induction kit would give better airflow.

Perhaps better airflow but at the expense of filtration

DannoSupra
29-08-07, 18:39
Stick with stock, Toyota have spent time and money developing these!

Now on the other hand, Why not try a Piper-X Sponge one, i know they're good

Stevie Boy
29-08-07, 18:56
Yeah, I could. But I assumed that an aftermarket induction kit would give better airflow.

I guess this would depend on if the surface area of the cone filter was greater than a stock panel filter area, otherwise I'd be suprised if it would flow anymore air than a stock.

dwayne
29-08-07, 19:13
anyone know which induction kit is best of the bunch?
i currently have the hks but i think i'll be loosing that soon

Gaz6002
29-08-07, 19:14
anyone know which induction kit is best of the bunch?
i currently have the hks but i think i'll be loosing that soon

Apexi is good if you have to have a cone but i'd buy the stock one for sale in the for sale section mate. It's the best my miles.

Gaz6002
29-08-07, 19:15
http://www.mkivsupra.net/vbb/showthread.php?t=122405 :)

Konrad
29-08-07, 19:16
Why? Why didn't Toyota use induction kits when designing the car? Because the stock system is more efficient?

Maybe because some makes are from 2005 and Toyota had to put their system at 1993?

Gaz6002
29-08-07, 19:23
Maybe because some makes are from 2005 and Toyota had to put their system at 1993?

Is that a way of playing devils advocate? It's been proved time and time again that the stock airbox is the best method of intake, including with some single installs. ;)

tDR
29-08-07, 19:25
http://www.mkivsupras.co.uk/imports/2007/06/535.jpg

:)

Gaz6002
29-08-07, 19:28
Thats a nice setup. I'm going for a similar idea but with panel filter

Elmo
29-08-07, 19:52
http://img.photobucket.com/albums/v728/tdr1980/mkivsupra%20pics/DSC00012.jpg

:)

Does look good, sort of what I was thinking of. In your opinion is this better than stock?

Sharpie
29-08-07, 20:09
http://www.mvpmotorsports.com/Templates/frmTemplateM7.asp?SubFolderID=213&SearchYN=N

Dave
29-08-07, 20:22
wheres the proof stock is better than cone .the two intakes for the stock are pants my apexi has the stock headlight feed and a 3in cold feed pipe direct from the outside straight on the filter.its shielded from the engine heat ,its more responsive especially in the cold and sounds better .so mines staying put :tongue:

Sharpie
29-08-07, 20:33
So far, I have never seen any independent proper testing of any of the aftermarket filters or ANY filters……So why HKS get's slagged off above any other aftermarket filter, without any independent proper testing done on any of them, I don't know why.

I don't count hoover tests...

Elmo
29-08-07, 20:40
http://www.mvpmotorsports.com/Templates/frmTemplateM7.asp?SubFolderID=213&SearchYN=N

That looks good! I would have thought it would be fairly easy to make that heat sheild out of a sheet of Stainless Steel.

tDR
29-08-07, 23:02
Does look good, sort of what I was thinking of. In your opinion is this better than stock?

Yes. And it is the "Max Air" kit Peter has posted the link to - just needs adapted a little because it's designed to fit the MAF equipped US / UK model rather than JDM Supra.

Don't get me wrong, there's really not much wrong with the OEM airbox / filter and most aftermarket cone type setups are worse - it's just IMO this setup gives me the best of both worlds.

Cheers,

Brian.

Elmo
29-08-07, 23:10
Yes. And it is the "Max Air" kit Peter has posted the link to - just needs adapted a little because it's designed to fit the MAF equipped US / UK model rather than JDM Supra.

Don't get me wrong, there's really not much wrong with the OEM airbox / filter and most aftermarket cone type setups are worse - it's just IMO this setup gives me the best of both worlds.

Cheers,

Brian.

As I said in my first post, do you think the standard air box can be modified if a hole was cut in it to make way for the induction tubing, and is there enough room inside the airbox for a cone?

Class One
29-08-07, 23:12
Bri, is the "box" part felxible enough to be fitted, ie the back plate that goes against the turbo to intercooler pipe ir is it rigid. You saw my set up at TOTB with the Greddy style foam filter but because my intercooler pipe to my fmic doesn't quite follow the stock routeing, I'm looking fior something better than what I have and I know my stock airbox won't fit back on.

Because my car boosts better in colder air, I think I'm getting a bit of heat soak because after a bit of spirited driving it will struggle to get over 1 bar but in the cooler air of when the engine isn't hot it'll acheive 1.1bar easily.

tDR
29-08-07, 23:12
As I said in my first post, do you think the standard air box can be modified if a hole was cut in it to make way for the induction tubing, and is there enough room inside the airbox for a cone?

Not really - you'd be better fabricating your own box.

tDR
29-08-07, 23:15
Doug - it can be 'persuaded' to a degree but it is pretty rigid. Could you not rotate your IC pipework a little to give some more clearance? Or maybe visit a custom exhaust shop to knock you up a new IC pipe section that will follow the stock route?

Cheers,

Brian.

Class One
29-08-07, 23:17
Doug - it can be 'persuaded' to a degree but it is pretty rigid. Could you not rotate your IC pipework a little to give some more clearance? Or maybe visit a custom exhaust shop to knock you up a new IC pipe section that will follow the stock route?

Cheers,

Brian.

It runs all the way from the turbo outlet to the i/c inlet, that's a long piece of piping. Not my choice but as some have said before WYPCYPT

tDR
29-08-07, 23:22
It runs all the way from the turbo outlet to the i/c inlet, that's a long piece of piping. Not my choice but as some have said before WYPCYPT

WYPCYPT? :search:

You could cut it just where it comes through the wing as per my setup and use a piece of Samco to join another piece of piping. I hear Marley drainpipe works well :eyebrows:

Class One
29-08-07, 23:24
WYPCYPT

When you pay cheap you pay twice.

XS power fmic supplied and fitted by TF.

tDR
29-08-07, 23:26
Ahh! New acronym on me :)

Well one thing's for sure, my GReddy 3-Row certainly cost a pretty penny!

Class One
29-08-07, 23:28
No issues with the fmic per se so far, just not happy with the induction side .

Wez
29-08-07, 23:44
http://img.photobucket.com/albums/v728/tdr1980/mkivsupra%20pics/DSC00012.jpg

:)

EDIT: should have read whole thread first :(

Kranz
30-08-07, 00:08
http://img.photobucket.com/albums/v728/tdr1980/mkivsupra%20pics/DSC00012.jpg

:)

I remember buying one of those on Ebay a while back. Guess I better get it fitted!! :D

Only $50. Bargain ;)

tDR
30-08-07, 09:56
The Max Air kit or a heat shield? lol

Kranz
30-08-07, 11:43
Heat shield.

Can't afford the max Air kit :)

Nic
30-08-07, 13:03
anyone know which induction kit is best of the bunch?
i currently have the hks but i think i'll be loosing that soon

If you want an aftermarket induction kit, I'd recommend either the Power Enterprise Air Impulse II or Blitz Sonic Power induction kits.

http://www.power-enterprise.co.jp/products/english/main/inteke&exhaust/air_impulse/air_impulse.html
http://translate.google.com/translate?hl=en&sl=ja&u=http://www.blitz.co.jp/products/aircleaner/sonicpower.htm&sa=X&oi=translate&resnum=1&ct=result&prev=/search%3Fq%3Dhttp://www.blitz.co.jp/products/aircleaner/sonicpower.htm%26hl%3Den%26client%3Dsafari%26rls%3Den

colsoop
30-08-07, 13:43
go on to Supraforums, there is a guide on how to make an airbox including the template. i find the easiest way to make parts is to get some cardboard and make the item out of that first before transferring to ally.

Elmo
30-08-07, 13:45
I'm not a member and they aren't accepting new members, would you be able to copy and post the info on here?

Cheers!

colsoop
30-08-07, 13:48
http://homepage.ntlworld.com/david.patrick/moon.gif


I will have a look for you, i hope their search button is working though :p

Elmo
30-08-07, 13:50
Mmmmmm moon on a stick...

Cheers :D

colsoop
30-08-07, 13:52
Custom Air box, By MAZMAN/DANNY.
--------------------------------------------

Hey guys,
here is another D.I.Y. item i made, and thought i would share with the supra community.
The turbo heat shield D.I.Y. write up is here: http://www.supraforums.com/forum/showthread.php?t=326366 for anyone that hasnt seen it yet.

All the specs are in here, and items i used, so anyone with some time/patience/and a few tools, will be able to do it.

So lets start...
Making the template

Get yourself some cardboard and make a template out of it, use some sticky tape/masking tape if you need to, usually where there are some minor flex.
Bend/cut as required, untill you are hapy with the shape and design of it, Of course, you can copy my dimensions if you have a similar setup.
Once you have cut it all up, and made your template, go and try installing it in your car, see if there are any rough edges you need to fix up, or anymore cutting if required.
http://www.mkivsupras.co.uk/imports/2007/08/544.jpg
http://www.mkivsupras.co.uk/imports/2007/08/545.jpg
http://www.mkivsupras.co.uk/imports/2007/08/546.jpg
http://www.mkivsupras.co.uk/imports/2007/08/547.jpg

Buying aluminium, cutting it up

Buy yourself some aluminium, i used a 1.6mm thick aluminium, the most you'd need is 700 x 700mm sheet, i bought myself a little bit more,
and ive got more then enough. If you ask them for off cuts, you'd pay maybe AU$20 for a sheet.Buy two sheets if you think you'll stuff it up, cheap insurance.
I got my stuff from Obrian, near fairfield, on cumberland rd.

Use your cardboard dimensions/measurements, and trace it back on the alloy sheet, double check everything once you've done that.
Now cut the sheet with a JIGSAW, take your time and do it slowly, to get it as straight as possible (remember to use safety glasses).
http://www.mkivsupras.co.uk/imports/2007/08/548.jpg
http://www.mkivsupras.co.uk/imports/2007/08/549.jpg
http://www.mkivsupras.co.uk/imports/2007/08/550.jpg
http://www.mkivsupras.co.uk/imports/2007/08/551.jpg

Bending the material

Once you've cut up your box and happy with it, its time to start bending.
I used a bench vise, a strong steel flat bar for support, a few clamps to hold it in place and a piece of wood to hit it with, along with a couple of hammers.
The picture will hopefully give you an idea of how to start.
http://www.mkivsupras.co.uk/imports/2007/08/552.jpg

Trying it all out

Now that you have it bent, install it and see how the fitting is.
you will need to bend the bends to your desired angle, as every setup is different, and a single setup such as mine might have more/less room,
so bend the angles a little at a time, my bottom piece left side angle is at 40deg, and top flat lid piece are at 25deg both sides.
Also, drill the holes now where you will mount the top lid, i drilled 3x holes, on each corner. Make sure you line up the top piece perfectly,
before you start drilling.
http://www.mkivsupras.co.uk/imports/2007/08/553.jpg
http://www.mkivsupras.co.uk/imports/2007/08/554.jpg
http://www.mkivsupras.co.uk/imports/2007/08/555.jpg

Cutting the intake hole

Now we need to cut the hole for where the intake piping will go through.
Use a big sized drill bit (i used 10mm), to start off with a hole, then use a jigsaw as now you have a starting point.
Go slowly and make sure you mount the piece on a flat bench, otherwise you'll get vibrations and the jigsaw could possibly jump, causing it to damage the item or even injuring yourself.
Once that is done, get a file and go over all the edges and clean it up a bit, nothing worse then a sharp edge.
I filed all the edges to a circle edge, gives that nice smooth profesional look.
http://www.mkivsupras.co.uk/imports/2007/08/556.jpg
http://www.mkivsupras.co.uk/imports/2007/08/557.jpg
http://www.mkivsupras.co.uk/imports/2007/08/558.jpg

CONT. 2nd page

wibble

colsoop
30-08-07, 13:52
Polishing it all up

If you have the equipment, now is the time to polish those pieces to a bling bling look, if you want to of course.
The end result looks nice.
http://www.mkivsupras.co.uk/imports/2007/08/559.jpg
http://www.mkivsupras.co.uk/imports/2007/08/560.jpg
NOTE : i have updated on how to polish and what to use on 2nd page.
Installing heat wrap/rubber seals.

We are almost there :)
I bought some heat wrap with sticky backing from clark rubber, cost of the piece was AU$50 for a metre, ended up only using half,
so cost would be AU$25.
Get some paper and insert it inside the pieces, trace the outline on the paper, use that paper now to trace on the heat wrap,
that way you will get it right the first time.
I did it on both pieces.
I also bough some rubber seals from the same place, and cut it to lengh and used it for the edges, makes it just that little bit nicer :)
You can glue it on if you want to, so the rubber seal doesnt come off at some stage, or use silastic(i used silastic on the inside).
And there you have the finished box, all nice and shiny, looks real nice, wouldnt you say? ;)
http://www.mkivsupras.co.uk/imports/2007/08/561.jpg
http://www.mkivsupras.co.uk/imports/2007/08/562.jpg
http://www.mkivsupras.co.uk/imports/2007/08/563.jpg


Cutting up extra holes for intake

I went and cut my air duct a little bit different, the air duct is taking the air from the front, under the headlight, but i wasnt happy with that,
so i cut it to take the air from underneath, with a bigger opening hole now.
I also cut a 3" hole that will be inside the air box, wich will give me cold air from underneath and from the opening hole from the front bumper bar.
http://www.mkivsupras.co.uk/imports/2007/08/564.jpg
http://www.mkivsupras.co.uk/imports/2007/08/565.jpg
http://www.mkivsupras.co.uk/imports/2007/08/566.jpg

Making it fit

Here is a picture of it all installed without the lid on yet, with the K&N pod and all hooked up.
Some people would be happy with just that, and have the top lid as the bonnet, i myself prefer it to be enclosed properly.
http://www.mkivsupras.co.uk/imports/2007/08/567.jpg

Securing the lid
This is what i use to be able to close my top piece, simple yet effective.
http://www.mkivsupras.co.uk/imports/2007/08/568.jpg

CONT 3rd page.

wobble

colsoop
30-08-07, 13:53
Final product

And here is the final result, all finished and mounted in my car, looks real nice and im happy with the end result and product.
http://www.mkivsupras.co.uk/imports/2007/08/569.jpg
http://www.mkivsupras.co.uk/imports/2007/08/570.jpg
http://www.mkivsupras.co.uk/imports/2007/08/571.jpg
http://www.mkivsupras.co.uk/imports/2007/08/572.jpg

Template dimensions.

NOTE: the dimensions in here fit my purpose, and suits my car, understand that your piping might be different and your intake pipe + air filter may be different size and mounted differently, so take that into consideration and measure it up before you start doing things, you may find you just need a little bit here and a little bit there of trimming or cutting to make it fit.
http://www.mkivsupras.co.uk/imports/2007/08/573.jpg
http://www.mkivsupras.co.uk/imports/2007/08/574.jpg

Hope this gives a few of you guys an idea and a helping start to making your own air box, it took me 2 weekends of doing without being in a major rush.
All the best, and safe cutting guys :)

Danny.

woo

colsoop
30-08-07, 13:54
There you go chap :d

Elmo
30-08-07, 14:12
There you go chap :d

Cheers mate! Much appreciated :d

Final product looks good!

Elmo
30-08-07, 14:29
Theres a local guy I use for machining work, I'll fax him the drawings and get a price for him to cut panels out of 1.6mm thick aluminium, it will be much quicker as he has all the correct tools and access to cheaper materials etc. I'm sure I can do the bending bit myself.

I'll let you know what he says.

Wez
30-08-07, 14:30
Wow, thats great, thanks :thumbs:

Wez
30-08-07, 14:37
Download the PDF here (http://www.zen85016.zen.co.uk/downloads/Supra%20Custom%20Airbox.pdf).

:cool:

Elmo
30-08-07, 14:55
Download the PDF here (http://www.zen85016.zen.co.uk/downloads/Supra%20Custom%20Airbox.pdf).

:cool:

Nice 1!

Class One
30-08-07, 17:48
I might prune this thread an make it a sticky in tech for future ref if Ian C agrees. :)