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-   -   Boost Bank1 and Bank2 Variance Strange Problem (https://www.n54tech.com/forums/showthread.php?t=62435)

2011_550i_TX 06-24-2020 12:42 PM

Boost Bank1 and Bank2 Variance Strange Problem
 
I have a 2011 550i. JB4 MAP1, In my logs I monitor the reading from Boost and Boost2. Boost2 is always about 2 to 3 pounds less than Boosts' Reading.

Am I correct that Boost reads Bank1 (passenger side)?
and Boost2 reads Bank2 (drivers side)?

I started looking at where there may be boost leaks. On the drivers side (bank2) I noticed the diverter valve was cracked badly so I replaced it. Now Im seeing Boost(Passenger side) read even higher than Boost2. Like 5 to 6 pounds difference. I expected the lower readings I was getting on boost2 gauge would increase, but they didn't. Boost increased considerably on passenger side readings where I did no work.

Any thoughts?


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