Juben
Well-Known Member
- Joined
- Jan 29, 2015
- Threads
- 35
- Messages
- 2,519
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- 807
- Location
- Chattanooga, TN
- First Name
- Justin
- Vehicle(s)
- 2015 EcoBoost Mustang (AT) w/PP
Good info, Adam! Pink is what all of my friends use...on their superchargers lol.Because a 10psi spring is going to be too stiff and the car doesn't produce enough off-throttle vacuum to open the BOV 100%. There is potential to cause compressor surge and damage the factory turbo.
Spring color is silver with black line. You can view Tial's spring chart HERE.
When choosing the proper BOV spring you need to monitor what your immediate off throttle vacuum is. Here is an example from a bolt on EBM.
You can see the purple line is coming down which is the throttle closing, the green line is boost/vacuum, and the orange line is RPM. This shows a shift event that was in boost prior to letting off the throttle, this is exactly how you want to determine the proper spring. You can see here it is -11.39inHG which falls into the 7psi spring range.
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