Well today i decided to do a CAI setup on my car because the engine bay was just too hot and the pod was sucking in alot of hot air...

I started of with going down to a shop and getting them to cut a 3.5" hole... it only cost me $15 which i think was worth it cause i would have made a mess of it with snips or dremel... the hole came out pretty clean and for $15 im not complaining

After i got the hole cut i headed down to a hose supply place and bought some really flexiable 3" hose and 2 clamps then headed back home to play around... the hose was the most expensive at $22 a metre... i bought a metre even though i didnt need it... im sure i will find something to do with the offcut... vents to disc brakes perhaps?

Well... this is what i started with... u can see the hole i got cut out... and if u cant... ur blind



next up was fitting the hose to the pod to make sure it was going to fit and stuff



i took a bit of spare vacumme hose i had laying around and sliced it down the middle and put it around the hole just so it didnt cut into the pod or flexi hose



next i fed the filter up through the hole with the hose attached to it... i then realised that the pod was too long... *read 30cm pod * but i found a way around it so i was happy



i attached the pipe to the turbo and clamped it on... made sure everthing was tight and secure



as u can see... ive put the plastic covers back on but cause the pod was too long it didnt fit back correctly so i drilled some holes in the plastic and ran some cable ties through it... this should stop most of the rain and stuff getten in there



in this shot u can see that its tucked away pretty good and cant really be seen unless u get down on ya hands and knees



so there ya go... done it all for about $30 and the car feels alot stronger now so im cheerin!

Petey

Nice work Petey!

Were there any noticable gains etc.?

TRD Rolla

nice work dude

picked up alot more top end and seems to spool slightly quicker... engine bay temps were always so hot... u could cook and egg on the air filter... ill wait till it gets a little cooler later on and go for a spin... ive only tested it during the day so far

Nicely done Pete.. come do mine now </lazy>

doesn't look like there is much airflow down there tho? or is there a hole into that compartment that I can't see

air comes in near the indicator and scoops up around the pod... if i took the plastic covers of it would get more air but i really only did this to get the pod outa the engine bay cause its just useless in there

Noice, just make sure that the piping doesn't collapse.

Nice work...but your filter looks like it needs a clean/replacing
Nah..good job. More frontal wind force would have been better, from the pictures it does look like it is hidding away..cant really tell tho. Nice to see photos to back up mods..

haha u didnt beleive my sig?

the pod was only cleaned about 2 weeks ago... it is clean atm... its just a bit stained thats all

i was trying to stay away from "frontal wind force" aswell because if it rains and u have a car in front of u and the road is dirty it picks up alot of crap from the road and it will just go straight onto the filter... this way it just sucks the air that it needs... i just think its safer this way

Yep, water is a problem, thats why i sat mine up as high as possible when i mod'd my last car. But having the extra oooomf of direct flow is a bonus.

You turning rowey on??

always turning that sexy machine on... just him looking at my posts makes him wet... well so he tells me

Actually that's not all that important, it's extremely common to put the pod filter in the wheel arch area because it's protected from direct wind force and is sheltered from the heat of the engine - providing air to the turbo at ambient temperature (ambient air = "cool" air).

The small gaps all around the area to provide air to the pod are more than adequate.



This is a very good point, if the pipe can be flattened between your thumb and forefingers, then it may very well collapse and cause major problems. When selecting the pipe to be used, make sure it's very stiff and stingent.



Frontal wind force provides negligable benefits under full throttle, particullary on a turbo car - until you reach extremely high speeds that are greater than any speed limit on our roads.

Furthermore, direct frontal wind force will cause problems with cars that use an AFM (Air Flow Metre) which is generally connected right after the air filter. Consider coming off throttle on the highway, and the air blowing at the filter isn't actually getting sucked in - your engine thinks it's getting more air and your fuel mixtures get muddled up and the car can stall. Alot of people have found this to be a problem.

In the case of the car covered here, seems that it uses a MAP sensor so that'd be a non-issue, but, anyways, it's generally not the best idea on earth anyway because there's even more problems like heavy run going in as well... I tend to chuckle when I see people with a pipe poking out the front of their car as it's mindless!

-
Mcleod

Well it has been tested!

the same car i have raced when i run 20psi with the original setup i only slowly pull away... i set it to 14psi and i get the same results with the new setup!!! 6psi difference and i still win.... next weekend should be interesting back on 20psi :D:D

you raced aye .. legaly of course hahahahah

of course... i have my own private drag strip

This is actually a common problem with skylines, as the intake pipe ages it becomes softer. It will collapes under boost & force the turbo to work overtime to reach to same boost as before.

One of these days you've gotta take your bitch to Willow. A before & after would've been prime for this mod.

you had to ask







Excellent article petey, well done, this makes me want to chop chop the vp, (i should prolly get a turbo before i do that)

Except if the car doesn't get driven in the rain

the pipe i used actually has a very strong steel woven through it... so it wont "collapse"... its not just all rubber if thats what u guys are thinking

Pete

Thats a little different to how I make my cold air ducts but still works fine. I prefer to leave the air filter under the bonnet and close it off from the rest of the engine bay. Then I run the piping from the front of the car and point it directly onto the filter. That way I have no worries with water or dirt as such and am forcing colder air into the filter. I have never had any problems this way and have always seen an increase in response and power. Better fuel enomy too. I used to have a cordia turbo that went quite well and that had 2 cold air pipes running into the original filter box. In the box was a finer filter replacement. At higher speeds I was gaining up to 2 psi without using any turbo. Basically my inlet temps were significantly lower (I had a temp guage in the pipe for the blow off valve so I could measure exact differences) , the car had a better response and used a little less fuel. For the cost involved in making CAI definately worth while.

very smart..

I'll point out that its always an incredibly bad idea to drill holes ANYWHERE in your chassis, PARTICULARLY in the engine bay.

your engine bay metal can flex up to 1.5 INCHES under load. cutting holes in it and weakening it structurally, without re-inforcement, is a really bad idea. Short, and long term, not to mention you now have completely destroyed the way that the chassis will react in a collision.

But apart from that, nice mod.

Careful of rain.

My car came with a similar setup, but the pod was in the normal place, wiht a pvc pipe cut into the frount of the bumper and through to under the pod. The water problem isnt so bad then, but god it looks dodgy!

the hole thats been cut into this looks like its in the tray thing at the front of the car though, not the chassis. in my laurel and cefiro's and skylines and silvia's that tray bit has 2 pressed lumps in it about 3inches in diametre in the NON turbo models... this 'lump' is cut out in the turbo ones for the factory cooler pipes. Both the turbo and non turbo models have the same tray's, just one with and one without the cut-out... the turbo ones ARENT re-enforced either... just 2 3" holes in it.

Im guessing that cutting a hole in that tray doesnt make a very big difference to the structure of the car or how it will react in a crash...

ALTHOUGH... it is illegal to remove ANY metal from a car body without re-enforcing it... even cutting out your parcel try for 6x9's is illegal... not many police check on that though... but i imagine with the way police are going with import cars now then they will defect you for cutting out metal for a CAI...

probably best to reenforce it with something... even if you just weld a plate to the spot you are cutting out before you cut so that the steel in that area is twice as thick.

if it;s illegal to cut holes in the metal, what about cutting a hole to put in a scoop on your bonnet if it didn't have one in the first place.
P.S nice job with the cold air set up.

geesh... havnt looked at this thread for a while... i hardly think the hole i have cut is going to make a difference to the structure of the car. and also for cutting holes... what about everyone with intercoolers... im sure some metal was cut out of the front to get piping in... get of ya high horse. btw. never ever had a problem with water getting in. it is in a area where basically no water can get in. i have a bigger turbo and new cai setup. looks similar but using 4" piping now and a pod half the size

i will get some pics up soon

does it dreeeft?

if you do that it has to be reinforced and made to have the same crash rate index(or something like that) might be crumple rate... as the stock bonnet.

this brings back memories of this topic where mitch got ripped to the shithouse for putting his pod down below. have people changed their minds on the issue?

http://www.boostcruising.com/forums/index....c=52133&hl=

Notice how he has covers to prevent direct wind contact? Notice how the Mirage just has the pod sitting uncovered under the car?

There's your difference.

ROCK ON
R~R

They both used a good amount of piping... read the comments made on the mirage, thats what they were having a go at him about.

but his is a turbo, hahaha so he is made cooler FTW!!! hahaha, joking.
i got a pod i wanted to move it to the wheel arch, but now I am thinking of heat sheilding that whole side of the engine, so no heat can get to my pod or piping!

So where under the bonnet should i put my pod filter? Does it matter if the pod filter is suckin in hot air and y???

magic read: http://en.wikipedia.org/wiki/Cold_air_intake

Nice, im jus confused how does the air get into ur filter, its tucked away where the wheels are, the only air that comes in wud be the sides where ur tires are, at high speeds wudn flow right past the filter? not entering the wheel space where its mounted

wow... old thread...

i didnt care much for air ramming into it. i wanted it tucked away and sucking cold air instead of hot engine bay air while also being protected from the rain

pete

thanks heeps for pointing that out ,i was considering puting a pod to the front of my car and runing it to my stock box for abit colder air but if thats the case then yer ,im glad i read this ,thanks heeps ,u probly saved me alot of time and hassle

nice job man, just a question, hoping to do this to my car soon, do you think there will be any major performance increases if you use polished aluminium piping? Because its metal, does it stay colder? or..

great post sir, this really helped. thank you!