Perfect Power XMS4A - SENSOR CALIBRATION

60 pages

Save Page as PDF

To Next Page

To Previous Page

LETRIPP II XMS4A DIY MANUAL V2.1 www.perfectpower.com 31

PERFECT POWER XMS4A – Engine Management System DIY MANUAL V2.1

Dwell too short

Dwell just right

Dwell too long

18.3 DWELL SETUP VIA SOFTWARE

Open the F3 Dwell + Prime + Idle map:

Enter a dwell curve:

Refer to LetRipp II Software User Guide for more details.

Main Page

Default Chapter2
- Table of Contents2
1 Introduction5
2 Parts Supplied in the Kit5
3 Why Should You Read this Manual5
4 Explanation of Xms4 Units Available6
5 Technical Details7
- Fuel Injection7
- Ignition7
- Acceleration Enrichment8
- Injector/Engine Priming8
- Trigger Inputs8
- Boost Control8
- Prime (Fuel)8
- Idle Control8
- Setpoint Control8
6 Feature Explanation9
- Launch Control9
- External Supply to Sensors9
- Maps a / B9
- Calibration9
- Fuel Injection Map9
- Ignition Map9
- Compensation Map9
- Boost Control10
- Setpoint10
- Maximum Recordings10
- Onboard Logging (Coming Soon)10
- Communication Connection10
- Usb Drivers Setup11
7 Computer Requirements11
8 Pin Outs of Xms4A Unit12
- Xms4A Pin-Out Table12
9 Assessing Your Car's Fuel System14
- Is Your Car Ready for Fuel Injection14
- How to Make Your Car Ready for Fuel Injection14
- Figure 1. Fuel System Layout14
- Conclusion15
10 Assessing Your Engine15
- Compatible Trigger Wheel15
- Figure 2. Enlarged View of Surge Tank15
- Camshaft Sensor16
- How to Install a Compatible Wheel and Pickup Sensor16
- Figure 3. Crank Pulley16
- Which Sensors Are Missing17
- Injector Resistance17
- Figure 4. 60 - 2 Tooth Wheel Setup17
- Make Sure the Engine Has the Basics18
- Conclusion18
11 Where to Fit Your Xms4A18
- Suitable Places18
- Figure 5. Typical "Under the Dashboard" Installation18
- Unsuitable Places19
- Conclusion19
12 Where to Fit the Ignition Amplifier19
- Suitable Places19
- Unsuitable Places20
- Conclusion20
13 Screened Cable20
- What Is a Screened Cable21
- LETRIPP II XMS4A DIY MANUAL V2.1 Www.perfectpower.com I21
- Why Should I Use a Screened Cable21
- What Should You Use a Screened Cable on21
14 Crank Signals - What Do They Look Like21
- Positive Edge21
- Figure 6. 4 Wire Plus Screen Foil21
- Negative Edge22
- Magnetic22
- Digital/Hall Effect22
15 Typical Sensors Used and How to Wire Them22
- Amp23
- Engine Temp23
- Figure 7. Wiring of Perfect Power Amp Sensor23
- Air Temp24
- Figure 8. Wiring of Perfect Power Engine Temp Sensor24
- Figure 9. Wiring of Perfect Power Air Temp Sensor24
- Throttle Position25
- Crank Angle Sensor25
- Figure 10. Wiring of Throttle Position Sensor25
- Figure 11. Wiring of Magnetic25
- Camshaft Sensor26
- Conclusion26
- Figure 12. Wiring of Hall Effect26
16 Typical Devices Driven by the Xms4A27
- Boost Solenoid27
- Fuel Pump Relay27
- Fan Relay28
- Wire Idle Control Motor28
- Shift Lights29
- Rev Counter29
- Injectors29
- Ignition Amplifiers30
17 Idle Control - in more Detail31
- Two Wire Idle - Software Setup31
18 Dwell Time34
- What Is Dwell34
- Can It Damage Your Coil34
- Dwell Setup Via Software35
19 Setting up Parameters36
20 System Definition37
21 Set Points38
- Uses38
- Wiring38
- Setup Via Software39
22 Calibration of Sensors39
- Amp40
- Engine Temp40
- Air Temp41
- Throttle Position41
- Conclusion41
23 Rpm42
- Setup and Calibration Via Software42
- Limit42
- Conclusion43
24 What to Do before Trying to Start the Engine43
- Ignition Setup with Timing Marks and Timing Light43
- Ignition Adjustment Via Software44
25 Time to Start the Engine44
- First Things to Do When Cranking the Engine44
- First Things to Disable When the Motor Is Running44
- Idle Setup45
- Fuel Setup with Amp45
- Conclusion47
26 Look here if It Doesn't Start47
- Possible Reasons and Common Checks47
27 Tuning Your Xms4A for the First Time48
- Options48
- Tools Needed48
- Fuel Tuning48
  - Co Measurements48
  - Gas Analyser49
- Ignition Tuning51
28 Cold Start Map52
29 Acceleration Enrichment53
30 Setting the Boost Control up53
- Closed Loop53
- Via Pwm54
31 Launch Control54
- Uses54
- Setup Via Software55
- Conclusion55
32 Troubleshooting55
- Fuel55
- Pressure55
- Ignition55
- Spark Plugs56
- Coil56
- Two Wire Coil56
- Three Wire Coil56
- Four Wire Coil57
- Trigger Wheel57
- Trigger Sensor57
- Engine Failure, no Compression58
33 Basic Xms4A-2A Wiring Diagram59
34 Basic Xms4A-4A Wiring Diagram60

Perfect Power XMS4A - SENSOR CALIBRATION

Table of Contents