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Anyone run no element?

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MADSPEED

Probationary Member
20
0
Feb 24, 2004
palm bay, Florida
Wondering if anyone run no piping or element on there turbo with a vpc or maft? I was wondering this because I got a maft and I have a 1a dejont tool intake and I want to get rid of the whole MAS but it connects to the filter with the clips.
 
I would not run without a filter, your gonna start getting stuff in your turbo, MAF, and intake/engine. Just get a universal 3" K&N filter or equivalent and attach it to your intake pipe.
 
yah, no filter is asking for a blown motor. when i first got my blaha mas, a couple of pieces of the plastic got eaten by the turbo, and it beat up the compressor wheel. i just installed a vpc, and i have an old metal intake tube with a k&n filter on it. huge difference. HUGE.
 
I run an AGP RS49 50 trim with a 3" inlet. I bought a 3" *HONDA* inlet pipe, polished aluminum. It had 3 bends so I thought I could make it work. Work for what? Well I had to cut a few inches from one end but now my filter is OUTSIDE the engine baty totally. The filter is in the pace of the old sidemount IC!! I run a GM MAF-Translator in a blow thru position so that made the filter position easier. I have pics. If anyone PM's me with their email I can send them. Mark
 
I know guys who run with no filter all the time and no problems. This one dude with a turbo GSR civic making 500whp runs on the street with no filter all the time. 3 years now and no problem. He changes the oil evern 1500 or so miles but thats it.
 
My brand new 980 cfm K&N airfilter caused .9 psi of pressure drop on my car running NO maf and a hard inlet pipe to the turbo. Would be worth 2 psi extra of boost coming back out of the turbo, but I still wouldn't do it on my own car.
 
I have ran no filter or intake pipe on my race car for a long time. Not to long ago my compressor sucked in a loose vaccum hose. Luckily nothing was damaged and I was able to vaccum out the pieces on the charge side of the i/c.

My remmidy was a 5" stainless steel mesh drainage bowl(kitchen section) I bought at Walmart and cut with the plasma cutter to fit. I then attached it to the compressor housing with a t-bolt clamp. This seems to work well for me, but I would not suggest running no filter on a daily driver exposed to the elements and a greater chance of ingesting small foriegn debris(sand/dust).
 
Just wanted to know if there is anyone here runing without an air filter or tried running without one... (4g63 turbo w/2G MAS + SAFC II)

I know its hard to get a rock or somethign inside the intake pipe cuz of the 2g mas... so has anyone took of the air filter?

Or does anyone run the HKS stlye ait filter and see any performance with it?
 
4g63telantra said:
Just wanted to know if there is anyone here runing without an air filter or tried running without one... (4g63 turbo w/2G MAS + SAFC II)?

I know on a stock 1g if u pull off the air filter it wont run very well at all. Since the 2g mas is designed way better i would think u can run no air filter and it would be all right. I dont know why u would want to unless if u are going to the track, but go ahead and try it, see what happens.
 
XR4TSi said:
I know on a stock 1g if u pull off the air filter it wont run very well at all. Since the 2g mas is designed way better i would think u can run no air filter and it would be all right. I dont know why u would want to unless if u are going to the track, but go ahead and try it, see what happens.

Why would puling off the air filter on a 1g change anything? You pull of the maf too? It never affected my old FWD.
 
I know its hard to get a rock or somethign inside the intake pipe cuz of the 2g mas... so has anyone took of the air filter?
Its not neccesarily a rock you are trying to block with an air filter. Have you ever looked at an old dirty air filter? Would you want all that crap going into your turbo? I sure dont. If you only drive the car on the drag strip it might be fine, but as a daily driver I would'nt.
 
I have a HKS air filter with the really large velocity stack inside it. I remove the element when I'm at the track because I run so much boost and don't wanna risk pulling it through.

2615newmotor.jpg


I just pull the blue part out and put the rest of it back together. This is track only though....
 
Mirage2LTurbo said:
Why would puling off the air filter on a 1g change anything? You pull of the maf too? It never affected my old FWD.


Maybe because on of the honeycombs was pulled out also? i dont remember it was a long time ago. Every car has its quirks, im sure some would run fine without it, however mine didnt.
 
The HKS superpowerflow airfilters suck bigtime. I tapped mine and I had a whole bunch of small sandpaper sized particles drop out onto a paper towel from the turbo side. The HKS filters are small in area, restrictive and suck at filtering. The only thing good about them is their intake bell. Their MAF adapter also sucks, it blocks a good portion of the side bypass honeycombs, over-rating the amount of airflow coming into the motor. A large K&N or even the K&N FIPK is a vast improvement. Don't pull off your airfilter, that is ghetto.
 
I never thought I'd see this posted, haha. Why would you EVERY pull off the air filter? If you're looking for maybe 3hp and risking your turbo....I don't really think it's worth it.
 
babyman0737 said:
I never thought I'd see this posted, haha. Why would you EVERY pull off the air filter? If you're looking for maybe 3hp and risking your turbo....I don't really think it's worth it.

If you have money and your at the track who cares.
 
DSMJim said:
I have a HKS air filter with the really large velocity stack inside it. I remove the element when I'm at the track because I run so much boost and don't wanna risk pulling it through.

I just pull the blue part out and put the rest of it back together. This is track only though....


A bunch of the turbodiesel trucks at the trenching company my friends work for suck air filters in because of all the dust they get clogged with does not allow much air to get by and the turbo just eats it up.
 
pboglio said:
The HKS superpowerflow airfilters suck bigtime. I tapped mine and I had a whole bunch of small sandpaper sized particles drop out onto a paper towel from the turbo side. The HKS filters are small in area, restrictive and suck at filtering. The only thing good about them is their intake bell. Their MAF adapter also sucks, it blocks a good portion of the side bypass honeycombs, over-rating the amount of airflow coming into the motor. A large K&N or even the K&N FIPK is a vast improvement. Don't pull off your airfilter, that is ghetto.

I don't know how you got sand in it cause you shouldn't be gettting that under the hood unless you live in a dirty area. Even then a paper filter will do the same. I change mine yearly and it never seems to be really dirty, nor my oil.

The velocity stack inside the HKS filter is supurb vs a regular filter with nothing or square edges. As well my maf adapter is HKS and it matches the outside of my MAF perfectly it doesn't cover anything up so not really sure what your refering to.

I have seen people bag on it for a long time but it seems to work really well for me so I have no complaints. It's a 4.5" opening 8" filter which should have plenty enough air filtering area for any street car. The filters are a combined mesh with large on the outside and it gets smaller inside for better filtering, they have re-designed the filters a while ago. They are also oiled same as a K&N for filtering ability. Honestly for looks and performance I don't think they can be beat. They are however really expensive.
 
Running no airfilter or an HKS airfilter to a lesser extent is a nice way to sandblast the engine from the inside out. It also does a nice job of wearing down your compressor blades. If you have any sympathy for your car you would at least run a big K&N filter. I use a filter that is rated double what my engine flows, around 1000 cfm. K&N has a nice engine sizeing chart on their webpage. This presents little if any restriction to the motor and the cleaning interval is doubled due to the large surface area.

For what its worth, even my new K&N #4780 airfilter rated for almost 1,000 cfm dropped 24" H20 on my car at WOT around 5000-7000 rpm. Thats about .86 psi pressure drop measured right after the airfilter and 16" before the turbo. Ideally I would have measured it with a pitot tube but I didn't have one. Anyway, if your turbo was running 20 psi with my airfilter, it would have run 22 psi without it if the boost controller wasn't readjusted. Thats 2 psi worth of extra airflow on a maxxed out turbo. I still say it isn't worth it, IMHO.
 
When i take the air filter and headlight out at the track my MPH goes up a noticeable amount, 2-4 or something i cant remember, its been awhile.
 
How many people on here run open turbo? Obviously it may not be the safest thing to do, however since my buildup / swap I don't seem to have a lot of room for an air filter on my turbo. ( I'm running a gm Mas setup so no intake pipe is needed ) I know I don't want to suck dirt / sand or anything like that into my engine, but with the turbo blades spinning and chopping anything up that comes in their path how bad is it really to run like this? Anything else I can use as a screen to sort of block larger particles from going in? Eventually I will look into making a custom intake pipe, however right now I don't have much time or money to spend to get something like this done. A few friends I have just run open turbo so I don't know how much I would actually harm my motor by doing that as well? Any insight would be appreciated.
 
Daily driving I would not do that, the air is dirtier than you think. Any dirt that turbo sucks in goes in your motor..

Just as vaccuum leaks eats pistons rings so will no filter.

Ive always wondered if anybody makes a k&n style filter that clamps directly onto the turbo but isnt a cone, just flat filter on the turbo opening.
 
You have to have room for an airfilter, what happened to the stock location? No filter, bad idea. Any screen small enough to stop any significant size particles is going to be hugely more restrictive than the screen of a K&N with its enormous surface area. Makes no sense if you think about it. I wouldn't do it. With your mods you can't be serious about not running a $30 K&N filter and some cheap aluminum or aluminized steel tubing.
 
Don't do it, your turbo blades wont chop anything up they will get bent on the tips and end up with all kinds of pits, not to mention your intercooler would get all kinds of crap in it.

Screens over turbos decreases the surface area and its ability to suck in air, and therefore adds more lag. Air filters are designed they way they are for a reason, they have "ALOT" of surface area not to limit the amount of air the pipe they are connected to can flow.
 
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