The ECU or engine control unit can control a number of different functions on an internal combustion engine. In the simplest applications they will control nothing more than the amount of fuel which is injected into the engine. In most modern applications they can control the amount of fuel injected, ignition timing, valve timing and even the boost level obtained from a turbocharger or supercharger. The Civic Si ECU (engine control unit) is tuned from the factory for a high degree of performance. There also a number of manufacturers who build aftermarket ECU chips for the Civic Si which are generally capable of offering an even further performance boost. Many of the aftermarket ECU’s are also capable of being programmed. This will allow a driver to modify certain settings which can enable either an increase in power or fuel economy.
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 JDM Honda Civic CR X ZC DOHC PM7 Computer ECU EF7 EF8 EF MT Manual 88 91 $230.00 Time Remaining: 12h 24m Buy It Now for only: $230.00 Add to watch list |
 Honda OBD 1 Chipped PR4 PR3 P61 P28 VTEC ECU $140.00 Time Remaining: 19h 40m Buy It Now for only: $140.00 Add to watch list |
 88 91 Honda Civic Wagon 16 CRX EX SI 5 Speed 37820 PM6 L510 ECU 37820 PM6 L510 $99.99 Time Remaining: 20h 24m Buy It Now for only: $99.99 Add to watch list |
 96 00 Honda Civic Auto ECU $10.50 (3 Bids) Time Remaining: 20h 29m Buy It Now for only: $50.00 Add to watch list |
 93 92 94 95 HONDA CIVIC 16L M T ECU 37820 P28 Virgin D16z6 Manual 5 speed OEM $129.99 Time Remaining: 1d 8m Buy It Now for only: $129.99 Add to watch list |
 89 91 HONDA CIVIC SI CRX ENGINE COMPUTER 37820 PM6 A080 FREE SHIPPING ECU ECM $69.99 Time Remaining: 1d 14m Buy It Now for only: $99.99 Add to watch list |
 1992 1993 1994 1995 HONDA CIVIC 15 ENGINE COMPUTER MODULE ECM ECU 37820 P06 A52 $89.99 Time Remaining: 1d 45m Buy It Now for only: $89.99 Add to watch list |
 ECU ENGINE COMPUTER BOX PW0 000 MT JDM Honda Civic EF8 EF9 B16A VTEC 88 91 $145.90 Time Remaining: 1d 1h 2m Buy It Now for only: $145.90 Add to watch list |
 ECU ENGINE COMPUTER BOX P2T 003 MT JDM Honda Civic EK4 EK B16A VTEC 96 00 $275.90 Time Remaining: 1d 1h 7m Buy It Now for only: $275.90 Add to watch list |
 JDM Honda Civic EK4 EK B16A VTEC 96 00 A T ECU ENGINE COMPUTER BOX P2T J91 $229.90 Time Remaining: 1d 1h 10m Buy It Now for only: $229.90 Add to watch list |
 HONDA CIVIC JDM TYPE R 99 00 PCT ECU OBD2B RARE SI B16B B16 Vtec Dohc 1999 2000 $170.00 Time Remaining: 1d 1h 52m Buy It Now for only: $190.00 Add to watch list |
 AEM Series2 EMS ECU Engine Mgmt Acura Honda OBD1 $1,189.95 Time Remaining: 1d 3h 50m Buy It Now for only: $1,189.95 Add to watch list |
 2000 Honda Civic SI coupe ecu bracket mount $4.99 Time Remaining: 1d 4h 28m Buy It Now for only: $4.99 Add to watch list |
 HONDA ACURA ECU CUSTOM PERFORMANCE CHIP P06 P28 P72 PR4 Vtec Pr3 P05 P13 P75 $19.95 Time Remaining: 1d 4h 33m Buy It Now for only: $19.95 Add to watch list |
 Engine Computer ECU CIVIC 387513 03 04 05 $169.99 Time Remaining: 1d 14h 24m Buy It Now for only: $169.99 Add to watch list |
 Engine Computer ECU CIVIC 503745 03 04 05 $169.99 Time Remaining: 1d 14h 41m Buy It Now for only: $169.99 Add to watch list |
 JDM HONDA CIVIC TYPE R 99 00 PCT ECU OBD2b RARE Si B16B $215.00 Time Remaining: 1d 16h 1m Buy It Now for only: $215.00 Add to watch list |
 Cruise Cont BCM ECU CIVIC 581797 01 02 03 04 05 $74.99 Time Remaining: 1d 16h 17m Buy It Now for only: $74.99 Add to watch list |
 OBD2B to OBD1 ECU jumper harness Honda Civic Si EM1 $45.00 Time Remaining: 1d 16h 27m Buy It Now for only: $45.00 Add to watch list |
 Engine Computer ECU CIVIC 903558 01 02 03 $104.99 Time Remaining: 1d 16h 42m Buy It Now for only: $104.99 Add to watch list |
 Air Bag BCM ECU CIVIC 903559 01 01 01 01 01 01 01 02 02 02 02 $94.99 Time Remaining: 1d 16h 42m Buy It Now for only: $94.99 Add to watch list |
 1999 2000 HONDA CIVIC Si EX LX 37820 P2T A11 Z4 ECU OBD2B OBD2 5SPD VTEC $70.00 Time Remaining: 1d 17h 36m |
 BENEN CLEAR ECU LID COVER INTEGRA CIVIC HONDA SILVER $18.00 Time Remaining: 1d 18h 38m Buy It Now for only: $18.00 Add to watch list |
 1996 96 Honda Civic Si OBD Fuel Gas Saver ECU Chip $129.95 Time Remaining: 1d 19h 50m Buy It Now for only: $129.95 Add to watch list |
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