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for one make sure your dipstick fits down snug in the tube, if its loose, replace it.
next, do a compression check on your own. Does the motor sound like its running smooth?
Next its called PCV (Positive Crankcase Ventilation) valve. If it allows pressure to be blown through into the valve cover, replace it or clean it out really good and see if that helps.
Next, Blowby is usually caused by one of two things. Poor sealing rings allowing excessive pressure to build up in the crankcase. Or you have a cracked ringland from detonation. But by the looks of the breather on the valve cover, its clean, Usually a cracked ringland you will have smoke coming from the breather and oil all over the breather and coming from the breather.
In heavy boost applications, blowby is innevitable and a catch can is usually required but with a stock turbo you should be getting very little if any blowby. It will be most apparent at the dipstick tube especially if it doesnt fit snug in there. The rwd sr's have an oring and you should feel it kinda snap in there. If its building soo much pressure its still blowing it out then you definetly have problems.
Find out a little more info about whats going on and check those things and get back with me.
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