The DISA valve controls the path the air moves through the intake system and into the engine. Across its 11-year life, the valve was used in the M50, M52, and M54 engine which were predominantly used in the E36/E46 3-series, E39/E60 5-series, and a number of the X3, X5, Z3, and Z4 models. The valve is responsible for controlling air as it moves through the intake, resulting in improved performance.įirst featured in the E39 5-series in 1995, the DISA valve survived until the retirement of the M54 engine in 2006. In an effort to improve performance, BMW released the DISA valve in 1995. Differenzierte Sauganlage - and because German's can't pronounce this either, BMW just took the first two letters from each word and called this the DISA Valve.īMW's engineers discovered that the air path through the engine system has an impact on performance.
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