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      10-15-2018, 11:45 AM   #23
XutvJet
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Drives: 2011 Cayman Base, 2016 M235
Join Date: Mar 2016
Location: Kansas City

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Quote:
Originally Posted by Dj_Quik View Post
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.
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.
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