High Performance Manifold
Check the Hyper Rev book on Blade's site. I don't know if he's copied that section yet. I _think_ bozz speed and HKS do such manifolds.
Not that much of a gain I think with the standard turbo though... although could be if you run short bursts of very high boost
Not that much of a gain I think with the standard turbo though... although could be if you run short bursts of very high boost
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RC Developments in the UK make a manifold to fit the Evo 4 - 7.
It says on their site: "This component improves the flow of the exhaust gas into the turbo charger and beyond. The improved gas flow is a good starting point for NA tuning which is often preferable than forced induction tuning which can over stress an engine if not performed correctly. The additional benefit of the manifold is of course, its appearance."

It says on their site: "This component improves the flow of the exhaust gas into the turbo charger and beyond. The improved gas flow is a good starting point for NA tuning which is often preferable than forced induction tuning which can over stress an engine if not performed correctly. The additional benefit of the manifold is of course, its appearance."




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