SM4 Manual
by
MRM-Racing
V3.0
34
Throttle/Manifold mapping.
Engines with one throttle butterfly per intake port and turbocharged must use this method
of mapping. This type of mapping has advantages on naturally aspirated engines with big
camshafts. The Base Fuel Delivery table is throttle mapped and the Base Ignition Timing
table is pressure mapped.
In the fuel table the Load values relate to throttle position. e.g:- Load site 10 = 10%
throttle position. On the SM4 you setup this under menu
M2 Table Axis setup.
Set
Base
Fuel Axis Y
to
Throttle position.
Do
not use Baro & TPS under Menu
Base Settings
since
this is only for naturally aspirated cars. After selecting Throttle as y axis you may delete
the ***** market load axis in fuel table, they are not used.
RPM
Load
0
1000
2000
3000
4000
5000
0
*
*
*
*
*
*
1
*
*
*
*
*
*
3
*
*
*
*
*
*
5
*
*
*
*
*
*
10
*
*
*
*
*
*
30
*
*
*
*
*
*
70
*
*
*
*
*
*
100
*
*
*
*
*
*
Base Fuel Delivery table.
The Base Ignition Timing table should use load sites for pressure mapped engines.
Setting up a superior launch-control with SM4 chip 1.09
This is a guide to setup a very nice launch with the launch rpm set by a potentiometer that use
functionality present in the Autronic SM4 with chip version 1.09.
1) First off to setup launch is to define a vehicle speed input:
In menu M1 / I/P HSI / I/P HSI3 setup as follows:
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