Cold Air Intake 4 Mk3
 

i tried to make myself a cold air intake system , evertthing was godd escept i cant atke out the airbox which basically ruins it for me i got the pipe where you can jus put the O2 sensor in and it all should be alright but one problem, it was made for toyotas 98 and up, now i was jus wondering if i buy a 98 up O2 sensor from a dealership and do they have the same amount of wires so i can jus simply remove the old sensor and put it in so i can complete my project or will this ruin the stock system on an 88 mk3 n/a
if possible tho what car would have similar wirings as a supra

The item in the photos is NOT an 02 sensor. It is the Mass Air Flow sensor. Your car won't run without it. It is a calibrated part. If it ever fails, you (probably) can use one from a different year.

02 sensor is in the exhaust manifold.

sorry about the confusion im new to this engine, but do i have any aftermarket options to remove the whole thing? does it restrict my airflow , and if it does what year and which car can i borrow parts from , and would it giv me the straight pipe that i want?

LOL.
You're stuck with the AFM. Unfortunately the car won't run without it, or extensive other mods (read: standalone)
It's easy to work around, so I don't know why it's a big deal. Just put the piping on the adapter that your filter bolts to, then clamp the filter on the end of the piping somewhere behind the fog light.

sorry kinda confused , can i jus bypass the afm , its not really a big deal to me , but i just one of those people that if its factory its not good enough for me he he , dunno why but i jus hav this obsession, that i want everything perfect

i hace pics on top, so what do you think with the temporary solution that i did you think thats good enough for now?

Well, I always wondered if you could put the AFM straight onto the throttlebody using a short hose. Then you could run a 4" CAI to the AFM intake side with a step down adaptor like the ones I saw at PepBoys and AutoZone that come with those cheap cone filters (1 size fits all).

And like said above, put the filter behind the headlight/fog light. Or even in front of the a/c condensor/intercooler.

those pipes from pepbys are 4 inches??, seriously, thats the one that i got installed from nopw since im tryin to find my solution to have my tru cold air intake, theyre decent from now , since the jackass that sold me a car had a unsealed black ceramick piping as an intake, and when i told him, about that he jus said its ok since im not boosting

You can NOT run your car without a AFM any more than you can run it without a throttle body, spark plugs, pistons....it is an integral part of the operation of a Fuel injection system.

Hey I dont like how radiator clutters up the front of my engine compartment...can someone tell me how I can bypass this device?

see how silly that sounds?

Paint it, polish it, wrap it in Carbon fiber...whatever floats your boat...but Im afraid your stuck with it.

not to mention the simple fact that an O2 sensor goes in your exhaust, not your intake....

tell me somthing that i dunt know, if u were paying any attention to the thread all of those issues have been solved already , so get wit the program, he mention moving the afm by the throttle body, all i wanna know now is if the afm can work upside down because the wire isnt long enough for me to put it right side up , so if u cant help me with that question, dont try to tell me something that i already know, no offense bub, but damn , read the posts first k?

quote anywhere in this topic where you mention running the AFM upside down.

I wasnt trying to offend you, its just that in at least 2 posts after someone said you must use it you still asked about bypassing it...so I was just trying to "help" you out and make it clear that you cant...

however moving it to just off the throttle body and/or running it upside down is perfectly acceptable but I still dont see why you would want to...some people just seem to always be trying to reinvent the wheel

i've done it
 

i moved the afm to the throttle body,
perks of the move

shorter tube, since i only used one 22 degree bend tube it looks like a short ram intake, so the lesser the air travels, the faster it will get to the engine, and its less likely to lose velocity

its close to the fan so cold ait is more likely to be sucked in by the filter, and it gets fanned when you drive, better performance with no cost, everybody likes that right?

theres more space in the spot where the old intake used to go , so more air inside the engine bay and more air to get sucked in by your intake.

and not like i thought b4 u dunt have to turn the afm upside down or anything the wiring reached just fine, all you have buy is the 22 degree bend tube from pepboys which costs about 9.99, and a few adapters,and clamps

one important thing is the 45 degree adapter that you are gonna use to connect the throttle body to the afm.

the post might seem a little disorganized , sorry for that but im jus happy that i did something good
hope this helps somebody


while youre doing the move i suggest that you clean the parts too especially the afm i got pics here and u can see the diffrence

Im really not trying to rain on your parade here but you should be aware of at least one thing...moving the air filter inboard of the radiator/fan like that will actually cause the intake to suck warm air...and as you probably know warm air is less dense than cold air. Therefore while in theory you might be getting more air flow you are actually getting less air density, thus less horsepower.

if you do a little research into intake set ups you will find that more people prefer the approach of getting cleaner colder air from outside the engine bay.

What I did for my setup is I used a conical filter that had an open top. I then fabricated some ducting that goes through the front (where the stock air cleaner originally got its air) and then using ducts from various cars (the most important one being the fresh air duct from an 89 ford F-250) I found in the junkyard, created a sort of a ram air scoop out front to catch more air at speed.

In summary, while your setup might look nice and all, dont expect it to noticably increase performance

i know that too thats why i jus ran and got sum felxible tubing and it connects to the filter, and the other end i could jus put by the front bumper with a scoop so like you said i can catch more air. thats what i did with my cadillac b4, i know that theres not a really noticable diffrence in performance, but gimme a break, dont you feel better, when you do sumthing diffrent with your car?:)

but do you think this setup right now with the duct, which one do you think is more beneficial for me? the first one that i got with the afm in the end by the filter or the one that i got right now?

i love forums, without this i would have never had critique from people like u

Well, I dont know enough about the airflow charactoristics inside that ducting to know if the AFM is better closer or farther from the Throttle body, or if it makes any difference at all.

Having the cold air duct go all the way to the front wall is a good start, but I just wonder why do that and not just leave the AFM in its stock position since it kinda defeats the purpose of what you did in the first place. If you like how it looks in your engine compartment where you have it, I'd say leave it and make it look nice and clean by not going to the front wall with more ducting.

Yes, I do love doing something different with my car...its why most of us buy these cars and spend any time on them in first place. Sure I could go out and buy a mk4 or something else with more power than my N/A Supra, but what fun is that? I would be bored in a week!

The last car I had was a 73 Celica converted to a Hybrid 20/22R and there wasnt a whole lot stock left on the car. I owned it for 14 years. If youre like me, any little thing you do that makes the car uniquely yours is worth doing.

Mine is upsidedown and it runs fine. From the throttle body Mine goes straigh out and it has an open k&n on the end of it. Its in the space where the charcoal canister goes.

was readign this and thought of a good way to keep the maf and filter where it is and clean up the area a lil... a heat shield box. gonna have it made outa polished alum and enclose the afm and intake. shields it away from the hot air in the engine bay and hopefully wont look like shit. then you can run tubing or whatever to the box... what you say bout that?

why use metal as a heatshield? arent metal the best conductor of heat?
jus find sum heat resistant materials, and go from there

why metal? why did our cars come with metal heat shields for the turbo? its only to keep the hot air from the engine bay going into the filter, and it will help clean up that corner of the bay.

its metal on the turbo and the downpipe bcuz the turbo and downpipe are one of the hottest parts from the engine bay, its metal cuz its suppose to contain heat from the engine bay,and its not a metal heatshield its a heatsink, diffrence is the shield is suppose to keep heat away, sink is suppose to absorbe heat so it will be away from the unit, since the turbo produces heat itself , the heatsink provieds protection from the engine bay heat and at the same time it absorbs the heat created by the turbo

but your intake does not produce heat therefore, having heat stay in the area where you have your filter, is not gonna b any benefit to you, you cannot use the same principle as the heatshield on the turbo, with your intake you wanna try the best you can to deflect that heat coming from the engine bay

i got barely a drawing trying to explain what i mean

ok jsut dont bother than. im just trying to suggest a way to keep the hot air in the engine bay away from the intake and hide the maf you so dearly hate. maybe use a composite material than?

Damn '2NR! look at you all pimpin the mad drawing skillz and shee'at! Very well explained and intelligent responce...I give ya 9 out of 10 for that one!

(weez) -> :bow: ->(Supra2NR)

thank you , thank you, jus trying to help out other like others helped me,

hopefully this thread will help pple in the future making thier cold air intakes

ohh and I am now 10 posts up on you...


edit* ...make that 11!

The way I see it, I think its pointless to make a cold air intake...cause they dont really increase performance cause your not getting any more cold air than the stock one, And to make it look nice...well the rest of the engine bay looks like crap anyway. The heat shield is a good idea tho. The only reason i changed mine was to get rid of that muffler than was in the intake. I have a steel tube now going from my TB to my MAF. Or if you somehow get air from outside. That would be the best way. Hood scoop?

i thought i was the only one keeping tabs on the posts, well, i've been kinda busy, its warm out in the chi, so anyways

there is a point of putting the cold air intake, but most of the intakes u see here are short-ram intakes, jus designd to retro-fit the old intake system, its a short ram for a few good reasons,
1) easy fit & replace the old unit
2) easy cleanup when it gets dirty
3) easy to reach for any maintenance

a real cold air intake uses a long tube that extends close to the ground since cold air drops to the ground and hot air rises (its science) , im working on that too, i just gotta figure out the degree bends thati need ,

im gonna put the intake in front of the car behind the foglight, im gonna use that hole where the old inlet used to go, so that way my filter is gonna be away from heat and water at the same time, that concept might change since im thinkin of taking out my foglight

well when your moving the filter being higher or lower wont matter, just that its getting air from outside and not from in the engine bay. Thats the part you dont want. But even If you do get the filter outside, There probably will be no noticaeable gain. The restriction from the tube still adds up. Even if the tube is straight, Because its friction is a coefficent of length. But screw sicence, just do whatever floats your boat and looks cool i guess lol.

hell yeah there you go, if science and all the physics of your intake wont do shit for you, at least, it looks good right?

lol you guys are funny

haha. I personally would never make a cold air intake, The only reason mine is changed is because one of the rubber connectors was ripped. I plan on replacing it as soon as i find a junkyard with a supra in it. The only thing id try to get rid of is that intake muffler (they added that to the mustang and it lost 5hp cause of it)or the rib things created by the rubber. I dont care how my engine bay looks...if i change one thing, id wana make it all nice.

Theory
 

I have a little theory there. I have NO CLUE if it would work well, or just again...make the car unique and look better. But here it is:

Would it be possible to run a metal tube just behind the stock front spoiler (The lower part of the bumper....houses the running lights) and then weld on some type of metal heat sink style stuff on the outside of the tube.

With this setup I could see there being a SLIGHT decrease in PSI, however the lower temp achieved by this system could POSSIBLY make up for the longer pipe, and if tweaked, I could see this working VERY well.

Are you talking about a turbo? because the intercooler would be doing more cooling than any finned pipe, Although it may help a little if before the intercooler when the air is still hot. And on an NA, Your not going to get the air any cooler than it is from outside, Because it would be the same air cooling it.

on a turbo that job has already been taken by an intercooler, but he might have something here, if you have the intercooler setup already you can put a heatsink behind it to shield it from the radiator heat, that can work right ?

but pple jus use a spraybar that basically d@mn near sprays frozen air in front of the intercooler helping it cool your system,

those things looks nice and functional, it looks like a nos purge when used

Blocking air from your radiator is never a good idea...Its far more important the engine get cool air than the intercooler. There is no need for a heatsink anyway, frontal air flow would take care of that.

LOL.... that's sig material right there....

Reminds me of the one part in Anchorman where Will Ferrell is explaining how men are smarter than women.

Can we understand heat dissipation and air density relation to temperature, first and foremost, please?

I made a heat shield for my subaru because the ecu was pulling timing from hot intake temps on a 90+ degree day in traffic.
It's made of aluminum, and ::shocked:: it works.

ever stand in front of a fire? stand close. feel the heat on your face?
Put your hand 8" away from your face, blocking it from the fire.
Does it block the heat?
now, do that with, oh, a piece of tin flashing. does it work?
do it with a shoe, a rock, a branch, leaf, piece of glass.
it reflects the heat.


The small amount of heat dissipated onto the intake side from my aluminum heat shield is maybe, MAYBE, 5% of what was originally surrounding the filter.
I need to conduct some tests with a thermometer, but according to the heat on my hand, it's an incredible difference, and I haven't seen the car this happy from intake temps since the winter.

for reference, here's the setup on my Subaru.

http://img384.imageshack.us/img384/6...38239ru.th.jpg http://img384.imageshack.us/img384/7...38250uj.th.jpg

Nice
 

That is a beautiful setup you got going there...I like the heat shield. I think I am going to fabricate myself one once I get my K&N air filter, well its that whole system or w\e that you get. Cold air intake, all that jazz.....so yeah, maybe it will look as clean as yours....but somehow I doubt that.

thank you suprasaver!
It's not that hard, though. All it takes is a cardboard template, some tin snips (not really recommended, as they leave rough edges and are a little hard to work with, but they worked)
Other than that, some good weatherstripping from the junkyard, a bit of time, patience, oh and careful hands.

not dissing you, and dont take the reply the wrong way

im kinda thinkin it workd for your subaru beacuse your engine bay doesnt looks as cramped as the supra, maybe thats why the hot air from the engine or other parts has enough time to cool down before it hits your shield,

not dissing but that a good job that works for your subaru, functional and looks good

if i do the same thing with the supra, one of the ends is gonna hit the radiator thats why i was hesitant to use any metal, cuz i was sure that it was jus gonna conduct heat, and dont for get that theres only a few inches of clearance from the intake and the engine, and the intake from the radiator

thats why next thing im gonna do is to move the filter jus behind to fog lights

it'll work the same.
There's plenty of room in the corner to do that. It may take some thinking, and creative fabrication, but it'll work.

It has nothing to do with the "hot air cooling down before it hits the filter"
The heat shield redirects hot air away from the filter area.
The shield, and get this, actually shields the filter from heat!

Trust me, it works.

It works a thousand times better than putting your air filter above the manifold and next to the fan, where it gets 195* air fanned onto it.

nicely said... my idea was something like that but it was just tossed to the side... i mean what do i know, im just a kid...