Quote:
Originally Posted by Dj_Quik
Yes it does. map 1,2,3 and 5 are additive maps. For example Map 1 adds 3 psi to ecu boost. Map 2 adds 4 psi. Map 3 adds 6 psi. Theres also absolute maps where you set your own limit and jb4 will add or decrease boost to reach that target.
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The JB4 doesn't stack on the MPPK. An M235 with Map 1 makes the same power on the dyno as a 2014+ 335/435 non-MPPK running Map 1. If they stacked, the M235 would obviously be making more power. It doesn't.
The power advantage to the JB4 over the JB+ and Dinantronics Sport is its ability not only to add boost, but manipulate some timing and AFR to some extent. Timing is the real kicker and advantage.