Presenting the perfect addition to Eventuri's F90 M5 intake system to optimize the flow path all the way to the turbos. These carbon inlets have a larger volume than the stock inlets by maintaining a larger diameter all the way to the turbos. The stock inlets narrow down immediately after the connection to the intake which creates a restriction especially at higher boost levels. Eventuri has alleviated this restriction and also designed the curvature to be as smooth as possible allowing the turbos to reach peak boost sooner.
During development, Eventuri designed 2 versions of the turbo inlets for comparison. One set that was compatible used with their current intake system and also the stock airboxes and another set of turbo inlets with larger openings to be used with a whole new oversized intake system.
Both designs were prototyped and tested on high powered F90 M5's. The results showed that the gains between both sets were virtually the same, so they moved forward with turbo inlets that could be used with both their current intake system and the stock system. The diagram below shows the 2 designs that were developed. One of the drawbacks of the oversized inlets was that the more aggressive reduction in size to match the stock turbos created some flow constraints.
The performance gains from the inlets are produced by providing the turbos with a less resistive flow path which allows them to reach peak boost sooner in the RPM range. When comparing Eventuri's new carbon turbo inlets to the stock inlets, the differences are clear.
Where the stock tubes narrow down immediately after the connection to the intakes, the Eventuri tubes maintain a larger diameter and the reduction to the stock turbos is achieved with an internal radius on the machined flanges. This allows for larger volume whilst maintaining a smooth flow path.
