Hello,I haven't had any luck sourcing a VF56, but I was able to find a VF58 (ST14411ZR010) for the low price of $3,380 plus shipping.. I believe that this was the turbo used on the S206 & S206 NBR.
ST14411ZR010 / TURBO CHARGER ASSEMBLY / IMPREZA / subaru | part detail｜JP-CarParts.com
I like the OEM/JDM rareness factor, but for that price I'd just go with something like the Blouch Dom 1.5XT-R twin scroll turbo with the JDM manifold and downpipe. It's a little bit larger of a turbo, but is half the price.
dlheman - very nice setup! Thanks for sharing all of the details. Any recommendations on where to source rare JDM turbos like yours? I'd love to do something like this to my '19 STI once it's paid off and out of warranty... but if I'm being honest, I probably wont wait that long :lol:
I found the VF56 out of sheer luck - in Lithuania~!
It is a fantastic turbo for those who wants to have an immediate throttle response and linear power delivery. It felt a lot like supercharging than turbo charging if that helps.
Depending on your goal, the Blouch 1.5XTR twinscroll looks like a good choice. Maybe pair it with Tomei twinscroll manifold too.
While is nice to have a rare item, I simply did it for drivability. And it does spools pretty damn quick (understand this turbo is made for 2.0L) and we have to tame down the boost using 3 port ebcs. When my tuner was dialing the boost with oem 2 port ebcs, at the same wgdc he normally would set for 18-19psi for VF48 the VF56 shoot to 23psi. While the datalog showed no knock correction we think is best to lower the boost for longevity. My tuner had to reduced wgdc down and it still wants to stay at 20psi.
Even at that tune the Sport mode was unusable for daily driving because releasing the throttle between 3k to 4k rpm jerks the engine so hard as the turbo just wants to go. So either I be gentle with throttle by using intelligent mode or committed by using sport sharp which easily pass 4000rpm in a hurry. Thankfully the 3 port EBCS is able to tame down and smooth out the boost curve, settling at around 19.8 psi max boost and taper to around 15psi.
To this day I still hardly use Sport mode as intelligent mode is way more than enough for daily driving. I only use Sport mode on highway but in reality I don’t even need to. And this is at ambient tempt averaging around 32 to 34 Deg C all year long. It is that responsive and there is probably more left in it if I have FMIC and bigger injector. My HKS downpipe has two catalytic converter, and I am still on oem airbox and oem air filter too. Yet since the tune is very stable I probably don’t want to mess around with it anymore. Less wrenching and more driving is always better I guess.
So if your goal is drivability and ability to make use of the engine power for most of the time, this is a great way to do it.