Thread: Engine: 850 T5/R - What Turbo for 400HP
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Old Dec 4th, 2019, 18:52   #6
Jonny Cut Corners
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Last Online: Jan 8th, 2020 13:39
Join Date: Feb 2019
Location: Lutterworth
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I can't help with specific Volvo turbos as I'm new to volvo's (Could bore you made about subaru engine builds though)
But what ever turbo's you are considering, do look up the compressor efficiency graphs and try to learn how to understand them if you don't already.

Some turbo's might get you 410 bhp but take ages to spool then give all the power in an instant like a 2 stroke power band.
Where as another turbo might give you 390bhp and spool from 2500rpm. Which means more 'area under the graph' on the dyno graph = feels way faster 95% of the time.

If you're feeling nerdy and like to do your own research then learn how to understand compressor efficiency graphs. It might help you whittle down the choices.
https://www.enginelabs.com/engine-te...-turbocharger/
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