Any advantage to just replacing stock air filter with stock sized K&N in the factory air box? Seems it would provide more flow and still bring in cold air.

 

The "Kokeln" intake system used the factory AFM and some modified piping to put the Cone filter in a good spot. See attached pic.

Ski might have some more info on it. I have the AFM pictured in a tote somewhere, but not the adapter from the turbo. (J-boot replacement)

 

Has anyone here outflowed the stock airbox ever? Well... no. If you dont HAVE to go down this path, dont.

 

I remember seeing that the airbox itself wasn't the restriction. The snorkel becomes a restriction, which is why Porsche removed it on the factory 968 Turbo S.

 

Nice. I'm going down 'this route' because the combination screws on my airbox no longser screw in properly and while i have replaced them with traditional hardware to secure the lid, I will likely replace the whole setup with a MAF anyway. To date i havent seen anyone with an eclosure for a cone filter that breathes from the stock hole for the snorkel.

 

Try this thread.

https://rennlist.com/forums/944-turb...n-project.html

 

https://rennlist.com/forums/944-turb...-upgrades.html

Bit of a read but there you go.

 

Jon Milledge got 400 hp from a 2.5L with the stock airbox and plumbing on a dyno....why change this?

 

I'm not sure the cost/benefit is there if you want to replace the stock box just because it is bulky. It takes, at most, 10 minutes to remove the air filter housing and snorkel. Seems like it would take at least five hours or more to fabricate and install a cone filter/modified piping. If my math is right, you would have to remove your stock filter box at least 30 times in order to break even in regards to time lost due to the size of the stock system.

Anyways, just food for thought...

 

I got a noticeable increase in power with my setup. With the AFM relocated and the cone filter near the fender air inlet, my car would spin the tires when the boost hit in second gear. It would not do that with the stock setup.

 

To have that kind of change provided all the conditions of the road etc were the same, you must be talking about a 50-100+ HP gain. There is no way a cone filter delivers that much more power, I would be surprised if it made any more, I would be expecting losses unless its the restriction in the system (which it wont be till massive HP).

 

thats pretty sweet, how long did it take to relocate? and you might want to consider doing a headlight convertion, it'll get rid of that big electric motor and lifting bar, and give you more room. just a thought.

 

It was close to breaking loose before the change. The change was enough to put it over the top. It isn't that big of an increase but it is a noticeable increase.

Doing the conversion took a while because there was a lot of trial and error. I made the smaller piece by hand and worked very hard to get it really smooth inside. Lots of filing and sanding. The intercooler pipe was fast because a friend made it in his machine shop.