AMP EFI MS3Pro - Subaru 6;7; Miata 99-05

5.3 Ignition settings 5 SETTING UP A BASIC CONFIGURATION
5.3.7 36-2+2
Known applications include:
• 5.7 and 6.1 Hemi without VVT
• Second generation Neon and SRT-4
• Most other Chryslers from 2003 and later
This mode uses a crank trigger (which Chrysler calls a “tone ring”) with 36 base teeth and two separate gaps 180
degrees apart. The number of teeth on the camshaft position sensor change with the number of cylinders; the
MS3Pro will select the cam wheel based on the general setup information entered. The camshaft position sensor
must be used if sequential injection or ignition is used, but the crank wheel can run the engine in semi-sequential
and wasted spark. Both sensors require pull-up resistors. Ignition input capture should be set to Rising Edge.
Factory ignition coils on these motors require an external ignition module such as the QuadSpark.
VVT Hemi models used a 60-2 wheel that uses Toothed Wheel mode.
5.3.8 36-2-2-2
Known applications include:
• Many Subarus built after 2000 without variable valve timing (AVCS)
• Mazda RX8
• Mazda MX5 from 2005 and later
This mode uses a VR sensor and a crankshaft trigger wheel with two gaps on one side and one gap on the other.
This mode can support sequential injection if cam input is used. Ignition input capture will depend on the way the
sensor is wired.
Note that Subarus with variable valve timing (AVCS) used a different cam pattern. For this mode, see Subaru
36-2-2-2 VVT mode.
5.3.9 Subaru 6/7
Known applications include:
• Many Subarus from the 1990s through mid 2000s
This mode uses a 6 tooth crankshaft trigger and a 7 tooth camshaft trigger, both with VR sensors. You must use
both sensors with this spark mode. Sequential injection is supported. Because of the nature of the VR sensors,
it can trigger off either edge, depending on the wiring. Ignition input capture should be tried both ways and set to
which one gives you the most stable signal.
5.3.10 Miata 99-05
Known applications include:
• Mazda MX5 Miata from 1999 to 2005
This mode requires using both cam and crankshaft position sensors. This code allows for both sequential injection
and control of the variable valve timing found on 2001-2005 engines. Ignition input capture should be set to Rising
Edge.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 89