It's a normal turbo...just massive.
Will probably hit full boost at 5k upwards...gonna need a strong head and bolts to get it up there. Quality of rods come into play with 7-8,000rpm built motor's.
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I dont plan on keeping this turbo, if I do I would make it an Hx32 by using an Hx30 hotside with a 7cm housing. Itd be good for 500hp on pump fuel (more on corn juice) and spool 1-1.5bar around 2700-3200.
But for the record IF I kept that turbo in stock form it is a 12cm twin scroll t3 flange. With a proper setup (NA cams, proper twin scroll manifold, E85, and VVT cranked to 22 degrees) It would spool up surprisingly quick on stock displacement. 1.5 bar at 3800-4200 depending on large or small port head. People think holsets spool terribly which just isn't true there are so many variants of "Hx35s" most people that find them too laggy have big exhaust housing 14 or 16cm or aren't utilizing the twin scroll manifold properly. When holsets are specd with the correct turbine, compressor, exhaust housing, and the setup is not junkyard turbotastic 5000. Then they do a damn good job. (Speaking from experience on 2.0L and 2.5L subarus).
Also to achieve the 550hp or more goal you'd need to be around 2.5 - 3 bar, which these turbos love to do, and put that with a power band from 4k-8k and you got yourself a screaming ******* setup, this spec turbo is good for 650hp.
Regardless the plan is to flip it, it's is brand new and original hx35 with a great spec and I picked it up for 219 euros including VAT. Sell it for 500 or maybe a bit more and use that money to find the unicorn hx32 or an hy35 9cm from the USA and then .... only then would I be truly satisfied with my big turbo build.
(If I cant find the turbo of my dreams I would build it as I stated before).
