I've been running a short k&n on my turbo for awhile and recently someone told me that if i put an elbow with a bigger filter I would gain close to 40hp. I have an old Outlaw cold air intake box laying around that i could put in. So i was wondering if it would be better to make the cold air intake box work or if should just use an open element filter? I know there was some debate about what works better NA (cold air intake box or open element filters) but I'm curious whats better for turbo?

 

Where's the smilie for blowing smoke up your *** when you need it...

No, you will not gain 40hp. Unless your turbo is currently drawing its air through a valve cover-sized breather. I doubt you'd see any difference between the two, as long as they are clean filters.

 

It was on a local forum. According to him when he was tuning the car on the dyno he removed the air filter and the dyno graph jumped 40hp. He switched to a big filter with an elbow and said there was no difference between the filter on and no filter after that.

 

Something doesn't seem right lol. Either the air filter was way too small or dirty as hell.

 

The way i have mine right now is just on the end of the turbo. Its about 4" long and pulls air from right behind the rad/fans.

 

40 hp .... LMAO!!! does that bigger filter flow nitrous out of it ?

 

Yeah i figured it might be more like 5hp or so. 40 hp is A LOT for such a small change.

 

Dono I had a stock air box and swapped it out for a k/n directly on the turbo and butt dyno said it picked up...

 

I don't think it's the filter that's the problem. I think it is more so that with only a filter on the turbo, it can only get hot air from sitting right on top of the manifold and motor/head that is a million degrees. If you put a 90 on it and try and draw some fresh air from somewhere would be more ideal.

 

Just moving the filter from the front of the turbo, to the side corner with a 90' turn you will drop your inlet air temps by 20+ degrees. Right in front you are pulling in hot air straight from your radiator.
The filter on the turbo works to a point, but if you are trying to get all you can then moving it will help.