BMW X5 M Sport Utility F85 4.4L V8 Turbocharger Boost Solenoid Valve (Pressure Converter)

by Anonymous on October 5, 2018

This fixed the CEL 2c57 No Boost that I've been getting on my E92 335i N55. This part is exactly the same as OEM.

by Samuel on August 8, 2020

I was having airflow issues, check engine light came on and my idle was all over the place. I took my car to my local dealership and they diagnosed my problem as a faulty MAF sensor and after $500 told me it was ready. When I picked up my car and tried to leave, I immediately had the check engine light come on and my idle was again all over the place. They kept the car for 2 more days and said I had an air leak in my Injen intake and new MAF sensor was dirty. They allegedly cleaned the sensor and tightened the intake at the turbo inlet pipe and was able to drive off. Two days later while driving, I had another issue with air flow, this time too much air which caused the car to reduce power, which occured every time I exceeded 2500 rpm. After doing some research, I found my problem was related to the boost solenoid. I found the Pierburg boost solenoid at the best price from RMEuropean. After replacing the part, I no longer have a problem with air flow. My car now runs great!