BMW 3-Series (E90 E92) Forum - View Single Post - Any Colorado E90+ members on here have JB3 or Procede V3?

raceyBMW · 04-14-2009, 03:18 PM

The high altitude map on the JB3 is not there to adjust boost up for the high altitude, it is there to taper boost at higher RPM so that you are not over spooling the turbos. Its more for longevity/safety than anything.

04-14-2009, 03:18 PM	#14
raceyBMW king of the hills 92 Rep 2,915 Posts Drives: 2011 M3 w/ESS55, 2001 540i/6 Join Date: Dec 2006 Location: Arvada, CO iTrader: (1) Garage List 2001 BMW 540i/6 [8.17] 1994 530i [9.00] 2007 335i Coupe [8.37]	The high altitude map on the JB3 is not there to adjust boost up for the high altitude, it is there to taper boost at higher RPM so that you are not over spooling the turbos. Its more for longevity/safety than anything.
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