Quote:
Originally Posted by Dougal
A/R describes the geometry of the scroll in the turbine/exhaust and compressor housings.
For a turbine, smaller A/R means it'll spin up faster. If this turbo does have a 0.35 A/R turbine housing then it's suitable for your engine.
Often you can get a range of turbine housings for each turbo with different A/R's to tune them for the engine.
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So with this A/R this turbo should spin up sooner (I am assuming this means it will spin up at lower RPMs... am I wrong?) than say the GT2056 or the other two you mentioned before, but won't have as much boost at those lower RPM's?