Hello,
I am searching to buy a BOV for my Evo IX.
I do not run on stock ECU.
I already installed a Motec M800 PnP.
So Recirculating BOV is not an issue.
My evo is a 2.0lt built with cosworth internals+Cosworth head+jun cams+HKS I/C+exhaust.
I am going to purchase a HTA35R or a GT42R turbo kit (I didn't decide yet ) and I am wondering.... which BOV is the best for 40+ psi of boost???
I am between HKS SSQV Racing type II (not the standard hks ssqv) and Tial...
Any suggestion?

 

thats alot of boost.. tial.

 

Thinking of 38 psi overboost and 31 psi ct boost.

 

Tial for a 35R or 42R since you plan on boosting that much HKS wont do you to well

 

Please check this out

"HKS Racing Type 2 Blow Off Valves: The HKS Racing Blowoff Valve Type II is a pull-type blow off valve for highly tuned applications. Similar to the construction and function as the HKS SSQV, the Racing Blowoff Valve Type II uses a large single stage aluminum pull type valve to handle the extreme amounts pressure and airflow discharge volume that is associated with high boost / horsepower applications. The single pull type valve design of the Racing Blowoff Valve Type II prevents boost from leaking in the same manner as in the SSQV, and is supplemented with a light vacuum aided spring that improves response at light load conditions. Additionally, the Type II is engineered to accommodate up to 3.0 bar (43.44psi) of boost and can work accurately on vehicles up at 800+ horsepower range. A sleek structured 29mm discharge port contributes to a smooth discharge that also allows for the rerouting of discharged air back into the intake stream. The Racing Blowoff Valve Type II utilizes the same circular mounting flange and billet aluminum construction as the SSQV to provide exception flow, secure interchangeable mounting, and durability"

 

Is anyone using the HKS racing type 2 BOV here with a standalone ECU?
Did he had any problem at all?

 

Everyone one uses Tial including myself would really recommend it.

 

i say get the tial and call it a day. Almost every big turbo evo has them and they have been proven to work at high boost.