Those who have gone standalone, and therefore no longer have an AFM, have their cone filter clamped right on the turbo.....
Don't you worry about crazy high intake temps? It's right in front of the exhaust manifold, and also right behind the radiator. Why not take half and hour and extend the filter up to infront of the pass. side shock tower or anything related?

I just relocated my AFM up to my upper IC tube, and just looking at my new air filter position.... just wondering what others have done,

 

Since I am about to install my engine a turbo into the car. Where would you suggest I buy 4" piping that I can run my filter near it's stock location. It will likly have to have a bend in it.

 

Extra un-needed clutter. Plus, the air still goes to the turbo, and the ambient temprature of the exhaust will heat up the intake charge. It would make sense that the intake cooling is 96% intercooler, 4% filter location.

 

What exactly do you use to connect that filter to the turbo?

 

yeah, reguardless of where the filter is.. the turbo is still just as hot, and the tubing that goes to the turbo is still right on the turbo. amen.

 

Fair to say that money would be better spent on getting cool air to the turbo, rather than running a pipe to the cool air?

IOW, cool air to the turbo area could serve to help cool the turbo and lower intake temp a few degrees too?

Just my opinion, but I think there is a lot to be said about good ducting...

 

you still want the coldest air possible entering the air filter, because hot air gets heated more than cooler air. Can you run your AFM on the pressurized side of the turbo? I thought that this was a no-no.
I still think that I'd run a cold air intake system from somewhere instead of putting the filter right on the turbo...

 

Definately... obvisouly, the cooler the air going into the intercooler, the cooler the air coming out is going to be!! Funny how some people will put hours and hours of work into installing a FMIC to get intake air that is cooler... well.... what about the 30+ degrees that can be had by taking in air that isn't right behind the radiator??? That's an pretty substantial amount.

Just have to make sure the duct is smooth, not convoluted at all, and is at LEAST 3" in diameter.. You see the size of the N/A intake pipe?? It's 3"... the turbo should be more than that.

 

guys. guys. guys. Usually when you see a turbo.. and there's a filter bolted right to it It USUALLY means these guys have invested LOTS of money on fuel computers, turbo's so on/so fourth. they USUALLY know what their doing, and USUALLY have about 400+ HP... so they have room to talk when someone ask's "Why is your filter mounted to your turbo?"

I never could understand (2 years ago) how a filter could even be mounted on the turbo. than i relized. once you got a fuel computer.. you dont even need a AFM.. DUH!

-Markus

 

It still boils down to your intercooler. Its only so efficent. Im not worried about it. Let the IC do its job. Look at drag cars. No filter at all. Where do you think their air comes from?

 

Wrong. If relocating the filter from a cool area to the turbo adds (say) 20deg to the air temp, then when it enters the engine it'll be about 20deg hotter than it was before moving the filter, regardless of intercooling. You should always try to pick up air from the coolest place possible. The cooler the air you start with, the cooler it'll be when it reaches the engine. Unfortunately lots of money can't change the laws of thermodynamics. The hotter the air entering the engine the more fuel you have to add to cool it enough to prevent detonation. Reducing intake temps not only increases power because of the higher air density, it also allows leaner mixtures to be run safely, meaning even more power. I've met people with 400hp cars that can't even explain how EFI works...

 

whats EFI?

 

emissions fuel inspection

 

the turbo exhaust manafold IS only about 3 inches from the intake snail... the air will get heated up reguardless, i think it would be better suited for the ic to cool things off...also the more piping you have the more turbalance you'll have in the intake plumbing which results in less of a direct flow to the turbo........imo

 

dont listen to him EFI means

"Everybody Fails Inspection"

 

EFI = Electronic Fuel Injection.

 

i have seen a headlight cover on the passenger side with a small scoop on it directing air the the stock location of the air filter that could always be some help i was thinking if getting one.

i think that would be the best idea

and if your worried about heat foucus on getting alot of that hot air out of the engine bay before worrying about getting cold air to the air filer.

 

On the filter location "debate"
If your filter is mounted on the turbo, you are pulling in say 120 Degree Air (from the turbo, manifold, and radiator heating it)

If you relocate the filter, and use a hard pipe back to the turbo, less say you are drawing in near ambient air at 90 degrees.

So, you just cooled your intake charge 30 degrees. Now, some of you are saying "the turbo exhaust manafold IS only about 3 inches from the intake snail... the air will get heated up reguardless" True, BUT think about how much air is traveling through that pipe, and the limited contact time is has with a pipe.
The air isn't going to have time to draw much heat out of the pipe, therefore it may only heat up 5 degrees or so before hitting the compressor wheel. You still have a 25 degree cooler charge to start with. This avoids heat-soaking your intercooler, and does make a overall difference in the power you'll see.

Too make an odd analogy, think of it this way:
Your Manifold is a blow torch, the intake air is your hand. You can either:
A. Place your hand in a small box thats been heated by the blow torch for 10 minutes (hmmm, think that'll BURN) (filter on the turbo)

B. Pass your hand infront of the torch a very quickly, won't get burned (filter re-located)

Its all about heat transfer.

Murdock

 

For those that have relocated the filter, where can you get 4" piping? What kind of piping? Thanks

Steven

 

^^ yah, what he said... How the heck do I attach that to my single turbo? I assume there is a flange or something...

 

WERD NZ!!! you know how to break it down, with my Cold air induction setup I can go for a drive and if I go above about 30 mph for atleast 10 mins and come to a stop and feel my TID and AFM it is atleast 40% cooler than inside the engine bay on cold nights when cruzing above 50 mph it makes a huge difference!! I only have a stock intercool so I know its contributing quite a bit of cooling properties after the intercooler!