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Upgraded Non-ELF BMW diodes (recommended)
The symptoms of a worn DISA valve include rough idle
Available with or without power diodes installed -
An easy upgrade while replacing your vanos
We've used this in our service department and were very impressed with the depth of its capabilities
S85 Vanos Solenoids 100-Tool Upgraded Non-ELF BMW diodes (recommended)The Vanos solenoids on the S85 engine are a very common source of fault codes as the car ages. The solenoids gradually become contaminated with foreign debris circulating through the oil and will slowly degrade, eventually causing some power loss. You can test your solenoids using ISTA+ or INPA to see the quality, response time and performance of each solenoid. Solenoid issues are likely caused by the common rod bearing and Vanos oil pump failures