The BMW S58 engine is pretty impressive, directly based on BMW’s sturdy diesel engines, it is capable of producing over 1000 hp with just bolt-on mods. One of the bolt-on mods that is needed to support big power gains is a new intake manifold with an improved intercooler. We had previously tested CSF Racing’s offering for the B58B30C and B58M30O1 engines found on the A90 and A91 Supras with great results. For the BMW variant of the B58, CSF went all out to improve their already excellent design by teaming up with heat exchanger manufacturer PWR.
PWR is renowned for its heat exchangers with their parts being used in everything from NASCAR to F1. The intake manifold is a joint development program using the engineering prowess of both CSF and PWR. The manifold is designed to be a direct bolt-on replacement for the stock BMW part with absolutely no messing around needed. CSF spent a lot of time with high-resolution scanning of the engine bay and the stock manifold with test fitting using 3D printed parts to make sure the manifold would fit perfectly for an easy installation. The manifold is primarily made of CNC-machined aluminum parts taken off of the 3D printed prototypes.
The S58 uses direct injection to provide the primary fuel. This is how the turbocharged engine can have an 11:1 compression ratio and why the engine is so resistant to detonation on E85. However, it is difficult to modify direct injection to get the high fuel flows needed for big power numbers. To accommodate big power, secondary conventional injection is used by most tuners. The CSF intake manifold comes with the bosses and fuel rail so you can add your injectors with ease.
The CSF intake manifold also has bosses for nitrous port injection if you wanted to use it.
You can see that the manifold comes with a fuel rail and all the fittings needed to use it. It also comes with a plastic heat-isolating intake gasket that keeps heat from the cylinder head from conducting into the manifold itself.