Holley COMMANDER 950 - Manual (Page 2)

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INTRODUCTION ................................................................................................................................................... 4
1.0 TERMS & DEFINITIONS OF FUEL INJECTION MANAGEMENT SYSTEMS.............................................. 5
1.1 F UEL M ANAGEMENT S YSTEM ........................................................................................................................... 5
1.2 T HROTTLE B ODY I NJECTION (TBI) .................................................................................................................... 5
1.3 M ULTI -P OINT F UEL I NJECTION (MPFI).............................................................................................................. 6
1.4 E LECTRONIC C ONTROL U NIT (ECU) ................................................................................................................. 6
1.5 T HROTTLE B ODY A SSEMBLY (TBA) .................................................................................................................. 6
1.6 F UEL I NJECTORS ............................................................................................................................................ 7
1.6.1 Bottom-Fed Fuel Injector ........................................................................................................................ 7
1.6.2 Top-Fed Fuel Injector ............................................................................................................................. 7
1.6.3 High-Impedance Injectors....................................................................................................................... 8
1.6.4 Low-Impedance Injectors........................................................................................................................ 8
1.7 M ANIFOLD A BSOLUTE P RESSURE S ENSOR (MAP) ............................................................................................. 8
1.8 T HROTTLE P OSITION S ENSOR (TPS)................................................................................................................ 8
1.9 I DLE A IR C ONTROL V ALVE (IAC) ...................................................................................................................... 9
1.10 M ANIFOLD A IR T EMPERATURE S ENSOR ........................................................................................................... 9
1.11 C OOLANT T EMPERATURE S ENSOR ................................................................................................................. 9
1.12 O XYGEN S ENSOR ......................................................................................................................................... 9
1.13 E LECTRIC I N - LINE F UEL P UMP ...................................................................................................................... 10
1.14 E LECTRIC I N - TANK F UEL P UMP .................................................................................................................... 10
1.15 F UEL P UMP I NLET F ILTER ............................................................................................................................ 10
1.16 M AIN F UEL F ILTER ...................................................................................................................................... 11
1.17 F UEL P RESSURE R EGULATOR ...................................................................................................................... 11
1.18 F UEL R AILS ................................................................................................................................................ 11
1.19 F UEL I NJECTION C ONTROL M ETHODS ........................................................................................................... 11
1.19A Speed Density EFI Systems................................................................................................................ 11
1.19B Alpha-N EFI Systems.......................................................................................................................... 11
1.20 C LOSED L OOP ............................................................................................................................................ 11
1.21 O PEN L OOP ............................................................................................................................................... 12
2.0 HOW DOES FUEL INJECTION WORK? ....................................................................................................... 12
2.1 S PEED D ENSITY ........................................................................................................................................... 14
2.2 A LPHA -N ..................................................................................................................................................... 15
3.0 SKILL LEVEL REQUIRED............................................................................................................................. 16
4.0 TOOLS REQUIRED FOR INSTALLATION.................................................................................................... 16
5.0 ELECTRICAL CONNECTIONS ..................................................................................................................... 16
5.1 S TEP - BY -S TEP W IRING H ARNESS I NSTALLATION .............................................................................................. 17
5.2 N ON -T ERMINATED W IRE C ONNECTION ........................................................................................................... 17
5.3 P LUG -I N C ONNECTIONS ................................................................................................................................ 18
5.4 I GNITION W IRING .......................................................................................................................................... 18
6.0 SOFTWARE INSTALLATION, SOFTWARE OPERATIONAL DESCRIPTION, AND COMPUTER
OPERATION ....................................................................................................................................................... 19
6.1 S OFTWARE I NSTALLATION ............................................................................................................................. 19
6.1.1 Windows 95, 98, NT............................................................................................................................. 19
6.1.2 Windows 3.1 ........................................................................................................................................ 19
6.2 B ASIC C OMPUTER O PERATION ....................................................................................................................... 19
6.3 S OFTWARE O PERATION AND N AVIGATION ....................................................................................................... 20
6.4 B ASE M APS ................................................................................................................................................. 21
6.5 A DVANCED AND B EGINNING U SERS ................................................................................................................ 21
7.0 STEP-BY-STEP INITIAL STARTUP INSTRUCTIONS .................................................................................. 21
8.0 STEP-BY-STEP BASIC TUNING................................................................................................................... 26
8.1 S TARTUP / E NGINE W ON ’ T S TART .................................................................................................................. 26