Thread: MINI B38/B48 BMW X1/X2 JB4 View Single Post
 (#601)
 emiliof New Member Posts: 14 Join Date: May 2017 Car: Mini F56 Cooper S
07-18-2019, 03:47 PM

Quote:
 Originally Posted by Terry @ BMS Sure thing: MAP 2 psi_curve[0] = 30 '1500 psi_curve[1] = 35 '2000 psi_curve[2] = 40 '2500 psi_curve[3] = 45 '3000 psi_curve[4] = 50 '3500 psi_curve[5] = 60 '4000 psi_curve[6] = 60 '4500 psi_curve[7] = 60 '5000 psi_curve[8] = 55 '5500 psi_curve[9] = 50 '6000 psi_curve[10] = 40 '6500 psi_curve[11] = 35 '7000 MAP 1 psi_curve[0] = 20 '1500 psi_curve[1] = 20 '2000 psi_curve[2] = 25 '2500 psi_curve[3] = 35 '3000 psi_curve[4] = 40 '3500 psi_curve[5] = 40 '4000 psi_curve[6] = 40 '4500 psi_curve[7] = 40 '5000 psi_curve[8] = 40 '5500 psi_curve[9] = 40 '6000 psi_curve[10] = 40 '6500 psi_curve[11] = 35 '7000
So Terry if I want to create a gentle map at low rpm and then adding more boost at the top end, like an hybrid version between map 1 and 2, I could make something like this, right? Of course the values are just an idea to show the concept.

psi_curve[0] = 15 '1500
psi_curve[1] = 15 '2000
psi_curve[2] = 15 '2500
psi_curve[3] = 20 '3000
psi_curve[4] = 25 '3500
psi_curve[5] = 30 '4000
psi_curve[6] = 40 '4500
psi_curve[7] = 50 '5000
psi_curve[8] = 50 '5500
psi_curve[9] = 50 '6000
psi_curve[10] = 45 '6500
psi_curve[11] = 35 '7000

Assuming that:
1. these values represent additive values for boost based on a decimal psi scale
2. If 1500 is below 10, then they will be additive values, and if 1500 is over 10 they will be absolute values

So in order to achieve an additive +5psi map with low torque, I do need to write these values under 'Map 6 Boost' like

1500= 1.5
2000= 1.5
2500 = 1.5
3000 = 2.0
3500 = 2.5
4000 = 3.0
4500 = 4.0
5000 = 5.0
5500 = 5.0
6000 = 5.0
6500 = 4.5
7000 = 3.5

Is is correct?