AEM Series 2 Plug Play EMS 306030 User Manual

Page 1 of 17 
 
 
Installation Instructions for: 
EMS P/N 30-6030 
 
2002-2004 Acura RSX K20A2 and K20A3 
2002-2004 Honda CR-V K24A1 
2001-2005 Honda Civic Si K20A3 
2001-2005 Honda Civic D17A1, D17A2, and D17A6 
 
 
WARNING: 
! 
This installation is not for the tuning novice nor the PC illiterate! 
Use this system with EXTREME caution! The AEM EMS System 
allows for total flexibility in engine tuning. Misuse of this 
product can destroy your engine! If you are not well versed in 
engine dynamics and...

Page 2 of 17 
Thank you for purchasing an AEM Engine Management System.  
 
The AEM Engine Management System (EMS) is the result of extensive development on a 
wide variety of cars. Each system is engineered for each particular application. The AEM 
EMS differs from all others in several ways. The EMS is a stand alone system, which 
completely replaces the factory ECU and features unique Plug and Play Technology, which 
means that each system is configured especially for your make and model of car...

Page 3 of 17 
Read and understand these instructions BEFORE attempting to install this product. 
 Engine Wiring Harnesses, ‘swapped’ engine installations 
It  would  be  very  wise  to  double-check that the vehicle’s  wiring  harness destinations 
match the pinout chart provided in this document. This is especially true if the vehicle 
contains  a  ‘swapped’  engine  or  if  the  wiring  harness  has  been  cut,  spliced,  soldered, 
tapped  or  modified  in  any  manner.  It  is  the  user’s...

Page 4 of 17 
 
 
Variable Valve Control (VVC) 
 
The VTEC output (pin B15, High Side 1 output on the EMS) switches from the low-lift 
camshaft lobes to the high-lift camshaft lobes, similar to traditional Honda B-series engines. 
This is controlled by the HS1 output (VTEC function) in the EMS, and can be adjusted in the 
Tools>>Configure Outputs settings.  
 
The i-VTEC output (pin B23, Injector 10 output on the EMS) advances the phase angle of 
the intake camshaft; this will have effects similar to...

Page 5 of 17 
 
Wiring accessories to the EMS 
Please  follow  this  suggested  wiring  diagram  when  adding new accessories and 
retaining  original  accessories such  as the multiplex  coolant  temperature  gauge,  air 
conditioning  switch, reverse  lockout, UEGO  gauges,  MAP  sensors,  IAT  sensors,  or 
switches  for  use  with  the  EMS.  Note  that  wire  polarity  is  not  important  for  the  Air 
Temperature sensor.   
30-1030 (Series 1) vs 30-6030 (Series 2) EMS differences: 
The EMS...

Page 6 of 17 
1) Install AEMTuner software onto your PC  
The latest version of the AEMTuner software can be downloaded from the AEMTuner 
section of the AEM Performance Electronics forums found at www.aemelectronics.com  
Series 2 units are not supported by the older AEMPro tuning software.  
 
2) Remove the Stock Engine Control Unit 
a) Disconnect negative terminal from battery 
b) Access  the  stock  Engine  Control  Unit  (ECU).  The location  of  the  ECU  on the Acura 
RSX, Honda Civic, and Honda...

Page 7 of 17 
 
b) Next  remove  the  metal  pin  from  the  plastic  connector  by  lightly prying  on  the 
plastic tabs that secure the metal pin in the plastic connector while pulling on the wire 
at the same time as shown below.  
Pry this tab up to release the pin        While prying tab up, gently pull pin back 
 
 
4) Install the AEM Engine Management System 
a) Plug the factory wiring harness into the AEM EMS and position it so the wires are not 
pulled  tight  or  stressed  in  any  manner....

Page 8 of 17 
 
5) Ready to begin tuning the vehicle. 
a) Before  starting  the  engine,  verify  that  the  fuel  pump  runs  for  a  couple  of  seconds 
when the key is turned on and there is sufficient pressure at the fuel rail.  
If  a  MAP  sensor  is  installed,  check  that  the  Engine  Load  indicates  something near 
atmospheric  pressure  (approximately  101kPa  or  0  PSI  at  sea  level)  with  the  key  on 
and  engine  off.  Press  the  throttle  and  verify  that  the  ‘Throttle’...

Page 9 of 17 
 
6) Troubleshooting an engine that will not start 
a) Double-check  all  the  basics  first. Engines  need  air,  fuel,  compression,  and  a 
correctly-timed  spark  event.  If  any  of  these  are  lacking,  we  suggest  checking  simple 
things  first.  Depending  on  the  symptoms,  it  may  be  best  to  inspect  fuses,  sufficient 
battery  voltage,  properly  mated  wiring  connectors,  spark  using  a  timing  light  or  by 
removing  the  spark  plug,  wiring  continuity  tests,...

Page 10 of 17 
Application Notes for EMS P/N 30-6030 
K20A2, K20A3, K24A1, D17A1, D17A2, D17A6 
Make: Acura/Honda   Description Function ECU Pin # 
Model: Civic, Civic  SI, RSX, CR-V  Spare Injector Drivers: Injector 8 B7 and C5 
Years Covered: 2001-2005  Spare Injector Drivers: Injector 5 B14 and C2 
Engine Displacement: 1.7L, 2.0L, 2.4L  Spare Injector Drivers: Injector 6 B16 and C3 
Engine Configuration: Inline 4  Spare Injector Drivers: Injector 7 B18 and C4 
Firing Order: 1-3-4-2  Spare Injector...