BMW M3 and BMW M4 Forum - View Single Post - Stock linear power vs JB4 Big Block Torque

8600RPM · 09-23-2015, 11:51 AM

Jb4 map is not linear in power, but it's a linear increase in boost with rpm but that unfortunately creates almost an exponential swell in power. You can create custom maps though with jb4 and make a more linear power band if so desired

09-23-2015, 11:51 AM	#4
8600RPM Lieutenant Colonel 658 Rep 1,749 Posts Drives: e92 m3 Join Date: Oct 2014 Location: AZ iTrader: (0)	Jb4 map is not linear in power, but it's a linear increase in boost with rpm but that unfortunately creates almost an exponential swell in power. You can create custom maps though with jb4 and make a more linear power band if so desired
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