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Originally Posted by Dammod
Good questions Jacques.
1. A turbo generally runs more efficiently the hotter the exhaust side of the turbo (up to a point), hence turbo blankets having a dual function of both containing the heat inside a turbo for efficiency purposes as well as for stopping latent heat from escaping into the engine bay.
Having said this, the natural flow of air through the 86 engine bay is through the grill area and under the engine, right through where the turbo sits.
AVO have not had any issues with any of their BRZ/86 turbo kits and water and they have sold MANY kits.
2. The distance from the engine/exhaust ports to the turbo is possibly one of the (if not THE) shortest out of all the turbo kits, the piping on the intake side is thus slightly longer due to the turbo being closer to the exhaust.
AVO turbo kit being known for being extremely responsive partly due to the short distance between the exhaust and turbo.
The new WRX and Forester XT have the turbo kit in almost exactly the same position straight from the factory.
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If I may add... It's also beneficial to have longer compressor-intake piping because, the more the compressed air volume, the lesser the lag plus there's more surface area to cool the compressed air, especially if a small turbo is used (faster spooling).