If you are using an aftermarket boost controller then just run all new lines. Are you tuning your fuel maps when changing boost????

 

yes and yes
I've run all new lines but it's just that old style solenoid, that can't cope boost above 23 psi from the factory
thought some restriction in solenoid inlet or outlet hose would give it a room for more boost at same duty cycle. am I thinking wrong ?

 

If you're using an aftermarket bcs then you might want to check with the manufacturer on how it reacts with pills. But, generally, yes a pill will allow higher boost.

 

where to put it, J pipe to ebc solenoid or ebc solenoid to actuator hose ?
where does it need restriction

 

So i have to take it out the Pills or i can let it like OEM when i want to install a grimmspeed Solenoid??

 

Just use the new lines that come with the 3 port. ditch the stock lines with pills.

 

I would say in between the compressor cover and solenoid.