You need a restrictor.
The factory restrictor is built into the CHAR if you look into the Oil Feed of an OEM Turbo.

 

When I worked for a Garrett distributor we would recommend a restrictor with a .035" hole for all ball bearing applications. I also stocked .065" restrictors for larger frame turbos or high oil pressure applications. Garrett ball bearing cartridges do not like to see more than 60 PSI or they become inefficient because of oil windage on the shaft. Not only will you blow oil through the seals, but you will loose spool speed and in turn sacrifice response.

You should be able to visually inspect the hole to see if there is restriction. Garrett uses some crazy thread on the oil inlet... (7/16-24 flare, I think). Its similar to a brake line fitting. I would purchase the restrictor from ATP and ditch the banjo portion on this side of the line.

-4 size Oil inlet fitting for GT28/30/35R with built-in restrictor : atpturbo.com

Hope this helps!

 

so i finally got my oil restrictor and was wondering what kind of thread sealant to use for threading it into the turbo. i read up on a bunch of other discussions and all they talk about are the water fittings with the crush washers and not to use tape on the AN fittings since they seal on the flare. I emailed garrett about it and they wont get back to me. so what works best?

 

Copper Crush Washer on the Turbo Side and let the AN fitting seal itself.
Simple.

 

but there was no crush washer supplied with the oil fitting so I assume that you must have to use some sort of thread sealant. the water fittings have crush washers but the oil fitting does not

 

OEM Uses Crush Washers.
I use crush washers.
Who cares if your kit didn't come with them. Go get some.