should i have a restrictor on a 3port and if so what size and what pipe some people say hose to the turbo others the vent to airbox. air in my case

 

is that on a v5 car? cheers max.
its only there to make the boost more controlable. i dont think on the new cars they have them. maybe some else can shed some light?????

 

its a early version 2 wrx

 

Yes i have found mine as per this on my old STI



The pills actually vary in size, the smaller the orifice in the restrictor the higher the boost, just bare in mind that if you swap out for a different size pill then car may need some sort of tweaking.

What scoob have you got?

 

WRX is 1.2 or 1.3 should boost to 0.9bar as standard

 

Yes they're still used and can now be found here>>>



The change is the good old 3 port solenoid for the 2 port solenoid.

 

i have a wrx with an sti version 5 block and standard turbo tdo5 so do i go for the 1.0 or 1.2 pill? also got a power fc and getting a remap on the 10th thats why i want to make sure everything is in order

 

Whos mapping the car? as i would suggest you speak to your mapper in regards to this as he/she will be able to define the boost for you and then that will relate to the restrictor. It;s just that i don't know the spec of your engine and don't want to advise you wrongly.

Or if you really want, a manual boost controller will override any restrictor pill and fool the turbo into more boost.

If i was in your shoes i would order a 0.8mm (if available), 1.0mm and 1.2mm pills and for the time being if the car is not holding boost then just use a 1.2mm to keep safe as these might get thrown out by the mapper.

But more than likely the mapper will not want to use a restrictor pill with the aftermarket ECU, as it slows down boost response. But speaking to the mapper will tell you all you need to know.

 

ive just run in a new block so its got a running in map atm. i may have the restricor in place i wil;l have to look in the week, im only after 300bhp so 0.9 to 1.0 bar of boost

 

3 port needs hole reduced to lower boost

2 port needs bigger hole to reduce boost

 

In regards to when you start mapping on the new ECU do away with the restrictor as it does slow the boost system down.

Your mapper will advise you further.

Good Luck

 

got it sorted checked its already got a pill so im gunna leave it as is :-)

 

thank you for your help

 

Phew i had my words in a twist on this one, it's been so long since i played about with any pills lol.

Glad i think i'm going to start a new technical thread in regards to these pills.

 

on the v3 its in the line off the blower outlet.