10cm^2 turbine housing is the size the DOM2.5xtr is meant to be. They do offer an 8cm^2 option, but 10cm^2 is what they designed the turbo for. Going 8cm^2 increases the spool slightly, but chokes the exhaust and you lose top end. Look at RJ, he went with 8cm2 IIRC.

The 3in inlet, forged billet CNC'd comp wheel, and ball bearing CHRA all increase spool.

I think the DOM 2.5 is great match for a mild built 2.5L. I would expect close to 400whp and full boost by 4k RPM on my setup. I was tossing up going a DOM3 aswell, but the 2.5 seamed to do what i wanted. I went with Blouch as I have an old TD05-18GXT from them and its an awesome turbo. Blouch have a hefty price tag, but they make some kickarse turbos.

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