Perfect Power XMS4A - TECHNICAL DETAILS; FUEL INJECTION SPECIFICATIONS; IGNITION SYSTEM DETAILS

LETRIPP II XMS4A DIY MANUAL V2.1 www.perfectpower.com 3
PERFECT POWER XMS4A – Engine Management System DIY MANUAL V2.1
5. TECHNICAL DETAILS
The following features are that of an XMS4A.
5.1 FUEL INJECTION
• 3-Ampere injector drives : 2, 4
• Injection : Batch, Sequential
• Injector trimming : Yes
• Main map sites : 384
• Manifold pressure map sites : 24
• Engine temperature map sites : 24
• Air Temperature map sites : 24
• Max duty cycle : 100%
• Peak and Hold : No
• Injection length resolution : 0.01Ms
Total injection length is calculated as follows:
+ Main map entry
+ Air temperature entry
+ Engine temperature entry
+ Acceleration enrichment
+ AFR Short term loop adjustment
+ AFR Long term trim
+ Manifold pressure entry
+ Fuel range
Other fuel components:
+ Priming
+ Idle control
+ Set point control Soft/Hard fuel cut
5.2
IGNITION
Cylinders : 2, 3, 4, 6, 8
Ignition : Sequential: 2, 3, 4 Cylinders
Ignition outputs : 2, 4, 8
Direct drive : NO
Output polarity : Positive
Main map sites : 384
Manifold pressure map sites : 24
Engine temperature map sites : 24
Air temperature map sites : 24
Dwell length map sites : 24
Total ignition angle is calculated as follows:
+- Main map entry
+- Manifold pressure
+- Engine temperature entry
+- Air temperature entry
Other ignition components:
Launch control retard
Dwell