"Open Turbos" w/ no filter. How?

[cturok7]

Is it safe to expose the turbo without an airfilter? Check out the attachment.

 

[diablos991]

For day to day driving that is definitely not safe. Imagine any bit of dirt, rocks, or other debris being ingested by your turbocharger, traveling through your intercooler and ultimately being ingested into you engine.

This should only be done at the track if you have some sort of stand alone ECU that can bypass the need for the Mass Airflow Sensor.

The gains from doing this to a stock car would be minimal at best. The car itself would not function correctly, if at all, without the stock Mass Airflow Sensor in place.

 

[always_broken]

What about a short intake pipe with the stock mas/filter adapter? Does pipe length matter?

 

[diablos991]

What about a short intake pipe with the stock mas/filter adapter? Does pipe length matter?

This is the basis of creating an intake for a car.

For our cars, the intake is usually composed of an air filter, Mas Airflow Sensor adapter plate, a pipe, a piece of silicone tubing and a few t-bolt clamps or something similar to hold the intake to the turbocharger.

The benefit of an intake is to reduce intake restriction caused by the stock airbox/filter setup.
Another passive benefit to having an intake setup (to some) is that the turbocharger's spool will generally be more audible.

I have not read any studies or tests regarding the length of the pipe and the differences that would result, if any, from having different types/lengths of pipe.

 

[snowborder714]

Pipe length shouldn't matter, but just know that the closer you get to the engine/turbo, the hotter the air will be that you're sucking in.

 

[Tarascan79]

This brings up a question of mine. If you extend the intake to the stock side mount location would it be a bad thing? I know thatthe cooler air would be better but would the length of the pipe be a negative?

 

[Mr Peepers]

The cooler air will outweigh the slight pressure drop most likely. As long as it's a smooth pipe with minimal bends and increases/decreases in diameter you'll be fine.

 

[snowborder714]

I would look into doing this as it seems to be what you're looking for:

http://www.dsmtuners.com/forums/showthread.php?t=195667

 

[turbosax2]

This brings up a question of mine. If you extend the intake to the stock side mount location would it be a bad thing? I know thatthe cooler air would be better but would the length of the pipe be a negative?

This is actually a good mod to do because of the colder air you will get.

http://www.dsmtuners.com/forums/showthread.php?t=230641&highlight=cold+air
http://www.dsmtuners.com/forums/showthread.php?t=237627&highlight=cold+air

 

[snowborder714]

The only thing with the second link that turbosax2 posted is that person is running a GM MAF-T in blow thru so they don't have to worry about the stock MAS. I would focus more on the first link.

 

[1gDSM4g63]

What about a short intake pipe with the stock mas/filter adapter? Does pipe length matter?

It doesn't matter the length of the pipe. You don't even have to have a pipe. The filter is what matters, but the further you can get away from the turbo is better for cooler air.

 

[FonZ454]

Don't run an open turbo. not only is it bad for the turbo (debris wise), I can notice a diference in power with an intake on vs. open turbo. I also opened up my SMIC hole and have the air filter sitting where the SMIC was... Kind of a cold air intake, it actually helps. LOVES the dense cold night air

 

[xxraptor660xx]

Don't run an open turbo. not only is it bad for the turbo (debris wise), I can notice a diference in power with an intake on vs. open turbo. I also opened up my SMIC hole and have the air filter sitting where the SMIC was... Kind of a cold air intake, it actually helps. LOVES the dense cold night air

I don't understand how running no air filter will decrease performance. Hypothetically speaking, an air filter is more of an air restrictor compared to running no filter.

 

[turbosax2]

I don't understand how running no air filter will decrease performance. Hypothetically speaking, an air filter is more of an air restrictor compared to running no filter.

Air filters will decrease performance over running without one as long as you're not sucking in incredibly hot air. At least until a small dog gets stuck in the turbo while you're driving down the road....

 

[Talesin]

1) You would need a MAF-T or speed-density setup to run 'open turbo'.
2) Running open turbo is stupid, as you can suck in any debris that comes along, including rocks. Right into your compressor wheel. Which is probably spinning between 10K-100Krpm. Bang.
3) Running open turbo is stupid, because you suck in hot air from under the hood. Hot air makes less power.
4) Running open turbo is stupid, as the intake pipe acts to channel the intake flow and reduce turbulence, allowing for the compressor wheel to pull in air more efficiently.
5) Running open turbo is stupid. Some guys saw it done in Initial D, and figured they'd try it out.

I'm planning to relocate my intake to the stock SMIC location once I get a frontmount setup with short-route blowthrough piping, and fab up a filter shield/baffle so as not to suck in any water on rainy/puddly days (the big down side to running the intake that low and exposed, aside from the extra dust/debris picked up... fair tradeoff for ambient temp intake air).

About the only way to intelligently run open-turbo is on a dedicated, fully-built drag car, with the turbo intake pointed forward and a nice big hole in the bumper (like Shep does), and having the money to buy a new turbo/engine/etc if you DO happen to catch a rock and grenade your turbo.

 

[DSMunknown]

I still remember my post in this thread.