Below is a dyno graph showing the comparison between the Eventuri and the stock airbox on a stock E60 M5 with stock map. The stock airbox tested is Euro spec with charcoal delete and euro filters so is less restrictive than the USA version. As you can see, power and torque are increased through a large portion of the rpm range not just at the peak. This is instantly noticeable on the road as the car feels sharper, more eager to drive even in the mid-range. The testing was done on the same day back-to-back and temperatures were monitored to ensure consistency.
Dyno testing was carried out on a Dyno Dynamics DS450 Dynamometer. For the purpose of accurate testing all tests were matched based on: - Inlet Air Temperatures through in built IAT sensor in MAF via OBDII - Ignition Timing Matched (Ignition timing can vastly change from one run to the next) - Engine Temperature (Coolant and Oil) - Exhaust Gas Temperature - Two consistent runs recorded for each of the below tests Testing Procedure: - Test 1 : Stock car, stock tune, stock intake system and euro filters (equivalent to charcoal delete) - Test 2 : As above plus Eventuri Upper Intake Scoops - Test 3 : Stock car, stock tune, Full Eventuri VAi Kit