AMP EFI MS3Pro - Page 64

5.3 Ignition settings 5 SETTING UP A BASIC CONFIGURATION
Trigger wheels Sequential level Settings
Main wheel Secondary
wheel
Distributor
only
Semi
sequential
Full
sequential
Trigger wheel
arrangement
Main
wheel
speed
2nd
trigger
active on
Missing
tooth on
crank
None Y Y N Single wheel
with missing
tooth
Crank n/a
Missing
tooth on
cam
None Y Y Y Single wheel
with missing
tooth
Cam n/a
Missing
tooth on
crank
Single tooth
on cam
Y Y Y Dual wheel
with missing
tooth
Crank n/a
Non missing
tooth on
crank
Single tooth
on crank
Y Y N Dual wheel Crank Crank
Non missing
tooth on
crank
Single tooth
on cam
Y Y Y Dual wheel Crank Cam
Non missing
tooth on
crank
Cam wheel
with tooth per
cylinder
Y N N Dual wheel Crank Every
Cylinder
Non missing
tooth on
cam
Single tooth
on cam
Y Y Y Dual wheel Cam Cam
Non missing
tooth on
cam
Single tooth
on crank or
two opposite
teeth on cam
Y Y N Dual wheel Cam Crank
Non missing
tooth on
cam
Cam wheel
with tooth per
cylinder
Y N N Dual wheel Cam Every
Cylinder
Distributor only: Can only use a distributor and batch fire fueling.
Semi-sequential: Supports wasted spark or wasted-COP ignition and semi-sequential fueling.
Full sequential: Supports sequential COP and sequential fueling.
For initial setup and determining tooth#1 angle on uncommon setups, having timing marks or tape on your
crank pulley/damper covering the full 360 degrees will be greatly helpful. Speed shops sell timing tape for a variety
of damper diameters. If your engine has no timing marks, you do need to add them. Just guessing at timing is
a great way to damage an engine. Running excessive timing under load will almost always cause severe
engine damage, e.g. broken pistons. It is essential that timing is confirmed with a timing-light on EVERY
install.
The most common trigger wheels that work under the generic “Toothed Wheel” mode that you are likely to
encounter on production engines are:
• 36-1 on crank with no cam sensor - early Ford distributorless ignition
• 36-1 on crank plus single tooth cam sensor - many later Ford distributorless ignitions
• 60-2 on crank with no cam sensor - many vehicles with early Bosch Motronic engine management: BMW,
VW, Audi, Volvo, Vauxhall, Opel, Peugeot etc.
• 60-2 on crank plus single tooth cam sensor - Bosch Motronic systems with sequential injection or distributor-
less ignition
• 60-2 on crank plus four tooth cam sensor - Bosch Motronic or GM 58X systems with variable valve timing
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 64