AEM TruBoost Controller Gauge 304350 User Manual

							
ADVANCED ENGINE MANAGEMENT INC. 
2205 126th Street Unit A, Hawthorne, CA. 90250 
Phone: (310) 484-2322 Fax: (310) 484-0152  http://www.aempower.com 
Instruction Part Number: 10-4350 Rev 090506 
©  2006 Advanced Engine Management, Inc. 
   
Page 1 
 
Installation Instructions for  AEM Tru Boost  
  WARNING:
 
 
 
30-4350 
Boost Controller Gauge 
 
 
 
This installation is not fo  the electrically or mechanically 
challenged! Use th EXTREMEr
is gauge with 
,!
 caution! If you are 
 
t 
uncomfortable with anything about this, please refer the 
installation to an AEM trained tuning shop or call 800-423-0046
for technical assistance. You  should also visit the AEM 
Performance Electronics Forum at http://www.aempower.com 
 
NOTE: AEM holds no responsibility for any engine damage tha esults from the misuse of this product!
 r
 
 
y and should 
never be used on public highways. 
 
 
 
This product is legal in California for racing vehicles onl 
						

							
Page 2 
EM’s  Tru Boost boost controller gauge is a stand-alone boost controller that features a 
ree digit LED digital readout with 24 sweep ing multi color LED’s, two programming 
uttons, and an on-board pressure sensor.  T he Tru Boost kit contains all necessary 
uge assembly 
(1) Appearance kit (Silver bezel, silver pin guide, white faceplate)   connector, 6 pieces) 
 NPT fitting 
itting   
 
   
Figure1. Kit Components 
 
A
th
b
components, including an AEM high performance boost control solenoid, to install \
and 
use the Tru Boost. 
 
Contents:  See Figure 1.  (1) Tru Boost Ga
(1) Installation kit (Butt
(1) Tru Boost cable 
(1) Boost solenoid 
(1) Instruction manual 
(1) Boost hose 10’ 
(1) 1/8” barb to 1/8”
(1) Sintered Muffler 
(2) –6 to 1/8” NPT f
(2) 3/16” barb to 1/8” NPT fitting
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

							
Installing the Gauge The AEM Tru Boost boost controller gauge  requires a standard 2 1/16” (52MM) 
ounting hole and can be mounted in a flat  panel or most standard gauge pods.  The 
 two  wire bundles and a 5-pin connector.  The 5-pin connector 
connec t 
 to 
m
included cable contains
ts to a mating 5-pin connector on the  back of the gauge.  See Figure 2.  Connec
the black and red wires in the long 2-wire bundle to the leads from the boost solenoid.  
Polarity does not matter. Connect the bl ack wire from the 5-wire bundle to a good 
ground.  Connect the 2 red wires to a fused,  switched, +12Vdc power source.  The gray 
wire is an optional low side driver output.   The orange wire is an optional scramble 
boost input.  The orange and gray wires do  not need to be connected for the gauge
function. 
 
Boost Hose 
Page 3 
 
 
The boost hose protruding from the back ressure using the on-board pressure sensor, the boost 
ose must be connected to manifold pressu re.  Connect the boost hose to manifold 
re 
Figure 2. Connector Locations 
 
of the gauge is connected to the on-board 
p sensor.  See Figure 3.  When 
h
pressure using the supplied tubing and 1/8”  NPT barb or an existing manifold pressu
port.  ( NOTE: Do not pull on the boost hose ) See Figure 4 for a connection diagram. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 3. Boost Hose 
5-pin 
connector 3-pin 
connector
 
OPTIONAL 75 PSIA 
SENSOR AND CABLE 
B RED 
BOOST 
SOLENOID  Tru Boost  
RE D, FUSED +12VDC) 
RED (SWITC ED, FUSED +12VDC) 
G
MANIFOLD  
PRESSURE 
LACK 
D (SWITCHE
H
BLACK (POWER GROUND) 
ORANGE (SCRAMBLE BOOST) 
RAY (LOW SIDE OUTPUT) 
Figure 4. Connection Diagram  
						

							
Scramble Boost Connection (Optional) 
Scramble boost is activated when the orange wire is grounded.  Connect t\
he 
range wire to ground through a switch
o as shown in Figure 5. 
 
 
ORANGE(SCRAMBLEBOOST)
Switch 
Page 4 
 
 
Warning Light Connection  (Optional) 
The Tru Boost w  is activated.  Connect 
e grey wire to a warni
 
 
oost Solenoid Connec When energized, ports 1 & 2  are connected, when de-ener gized, ports 2 & 3 are 
onnected. The port numbers are clearly noted on the solenoid body.  See Figures 7 
 
Figure 8. Internal Wastegate Connection 
Figure 5. Scramble Boost Connection 
Ground 
ill ground the gray wire when
 the alarm
ng light as shown in Figure 6. 
th
 
 
 
 
GREY(SwitchedGround1.5amax)
Warning Light 
+12Vdc Fused 
 Figure 6. Warning Light Connection 
 
 
Btions 
c
and 8 for plumbing instructions.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 7. External Wastegate Connection  
						

							
Page 5 
xternal Pressure Sensor ble of reading boost levels up to 50 psig when using the 
optiona r 
.  
onfiguring the Tru Boost  ser adjustable options.  Descriptions of each option, along 
with th
isplay Units: (UnI - PSI)  e front of the gauge to change the units displayed by the 
cramble Boost: (SCb - 10.0)  ty cycle output.  Duty cycle can be set between 10% 
cramble Boost Time: (SCr - 0.00)  5.5 seconds) the Tru Boost will output the 
ressure Sensor: (SEn - I)  nsor to be used by the Tru Boost.  The internal sensor (I) 
t E
The Tru Boost is capa
l external sensor kit.  The 30-4351 sensor kit come s with an AEM 75psia senso
and a harness to connect the sensor to the Tru  Boost.  See Figure 9.  Plug the single 
row 3-pin connector into the mating connector  on the back of the gauge.  See Figure 2
Plug the black 3-pin connector into the pressure sensor.  In order  for the Tru Boost to 
read the external sensor, the external sens or (E) must be selected in the pressure 
sensor (SEn) option. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Figure 9.  30-4351 Tru Boost External Sensor Kit 
 
C
The Tru Boost has 9 u
e abbreviation and default value for each  option shown in parenthesis, are listed 
below:   
 
D
  Use the buttons on th
gauge.  Select from Psig (PSI ), Bar (bAr), and Kpg (PAS). 
 
S
  Set the scramble boost du
and 90%.  The Tru Boost will output the se lected duty cycle when the scramble boost 
input is grounded. 
 
S
  Select the duration of time (0-2
scramble boost duty cycle when the  scramble boost input is grounded. 
 
P
  Select the pressure se
is used for boost levels up to 29 psig.  The opt ional external sensor (E) is used for boos
levels above 29 psig, up to 50 psig. 
 
 
 
  
						

							
Page 6 
larm: (ALA - 30) t pressure at which the al arm will activate.  When the alarm is 
lled to 
pring Pressure: (SPr – 2.00)  g pressure(3psi less then your spring).  The Tru Boost 
 
ar Graph Full Scale: (FUL – 30)   sweeping LED lights.  The LED light s start at 0 psig 
oost Setting A: (AXX – A10)  (10%-90%) for setting A.  For setting A, the duty cycle 
le, 
oost Setting B: (bXX – b10)  ycle is displayed as “bXX”. 
OTE: While configuring the Tru Boos t, the Tru Boost will stay in the 
 is turned 
re 
To enter the program m enu, hold both buttons down for 2 seconds and release 
then th
uge A
  Set the boos
activated, the LED lights flash yellow and the warning light output (grey wire) is pu
ground. 
 
S
  Enter the waste gate sprin
will keep the boost solenoid open from 1 psi until boost exceeds the selected value.  
This value can be adjusted to reduce lead in boos t spikes or reduce spool up time.  If
the spring pressure is unknown, a conserva tive starting value of 5 is suggested. 
 
B
  Set the full-scale value of the
and stop at the full-scale value, increasing in 24 equal increments. 
 
B
  Set the output duty cycle 
is displayed as “AXX”.  When setting dut y cycle, the gauge will display the current 
manifold pressure.  When either button is  pressed to increase or decrease duty cyc
the gauge will momentarily displa y the selected duty cycle before returning to manifold 
pressure.   
 
B
  Same as A, except duty c
 
N
programming mode until either the run mode  is reached, or the power
off.  Also, since the Tru Boost does  not change run modes while in the 
programming menu, the corresponding run  mode must be selected befo
entering the programming menu in order to view real time boost changes. 
 
e gauge will display “PRG”.  Hold both  buttons again for 2 seconds and release 
to move to the first option.   Push both buttons at the same  time to move to the next 
option.  The order of options is shown in  the menu tree below.  As a shortcut, the ga
will skip to boost setting A if only the left butt on is pressed after “PRG” is displayed.  
						

							
 
 
 
 
 
Page 7  
						

							
Using the Tru Boost 
The Tru Boost has 3 running modes.  In all modes, for manifold pressures less 
than 0 psig, the sweeping LED’s remain off, the  gauge displays pressure in units of     
in-hg, and the displayed values are negative.   In mode A, the gauge will output the duty 
cycle selected for boost setting A.  The  gauge will output the duty cycle selected for 
boost setting B when in mode B.  In the “OFF ” mode, the solenoid output is turned off.  
Press and hold the left button for 2 seconds  to change run modes.  The order of run 
modes is shown in the menu tree below.   The gauge also remembers the peak boost 
level achieved.  Press and hold the right button  for 2 seconds to display the peak boost.  
Press and hold the right button for 4 seconds to clear the peak boost value. 
 
 
Scramble Boost 
  Scramble boost is a feature that allows t he driver to momentarily change the duty 
cycle output of the Tru Boost.  The output  duty cycle for scramble boost is set in the 
scramble boost (SCb) option.  The scramble boos t duration is set by the scramble boost 
time (SCr) option.  Scramble  boost is activated by grounding the orange scramble boost 
input wire.   
 
Alarm 
  All 24 LED lights will flash yellow if manifo ld pressure exceeds the alarm level for 
more than 1 second.  The low side driver output will also switch to ground.  The LED 
lights will continue to flash and the output  will stay grounded until either button is 
pushed or the gauge is turned off. 
 
Over-Boost 
  The boost solenoid will shut off and all 24 LED lights will flash red if manifold 
pressure exceeds the alarm value by 10%  for more than 1 second or if manifold 
pressure exceeds the alarm level by 20% for more than 200  milliseconds.  The solenoid 
will remain off and the LED light s will continue to flash until either button is pushed or 
the gauge is turned off. 
 
 
 
 
 
Page 8  
						

							
 
Error Detection 
 
ErP- If the external sensor is shorted  or disconnected, the LED lights will flash 
red and the center digits will display “ErP”.   The error code will not activate when using 
the internal pressure sensor. 
 
ErS - If the boost solenoid is shorted or  disconnected, the LED lights will flash red 
and the center digits will disp lay “ErS”.  The error code will not activate when the Tru 
Boost is on the off mode.  Note: The sole noid always has a small pwm signal to allow 
for fault detection. 
 
Changing the gauge configuration 
  The AEM Tru Boost comes configured with the black bezel, black pin guide, and 
the black faceplate.  However, a silver bez el, a silver pin guide, and a white faceplate 
are also included in the gauge kit.  To change the  faceplate, pin guide, or bezel, orient 
the gauge so you are looking at  the faceplate.  Rotate the bezel counter-clockwise to 
unscrew it from the gauge cup.  The bezel,  lens, pin guide, rubber spacer, faceplate, 
diffuser, and anti-glare shield are all remo vable.  Reassemble the gauge as shown in 
Figure 10.  Make sure the sm all light holes in the faceplate, diffuser, and anti-glare 
shield line up with the light sensor on the circ uit board.  Do not over tighten the bezel 
when reassembling the gauge.   
 
 
 
 Figure 10. Tru Boost Gauge Assembly 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Page 9  
						

							
Page 10 
 
AEM Electronics warranty 
 
Advanced Engine Management Inc. warrants to the consumer that all AEM High 
Performance products will be free from defects in material and workmanship for a 
period of twelve (12) months  from date of the original purchase. Products that fail within 
this 12-month warranty period will be repai red or replaced at AEM’s option, when 
determined by AEM that the product failed due  to defects in material or workmanship. 
This warranty is limited to t he repair or replacement of t he AEM part. In no event shall 
this warranty exceed the original purchas e price of the AEM part nor shall AEM be 
responsible for special, incidental or cons equential damages or cost incurred due to the 
failure of this product. Warranty claims  to AEM must be transportation prepaid and 
accompanied with dated proof of purchase. This warranty applies only to the original 
purchaser of product and is non-tr ansferable. All implied warranties shall be limited in 
duration to the said 12-month warranty peri od. Improper use or installation, accident, 
abuse, unauthorized repairs or alterations  voids this warranty. AEM disclaims any 
liability for consequential damages due to br each of any written or implied warranty on 
all products manufactured by AEM. Warrant y returns will only be accepted by AEM 
when accompanied by a valid Return Merchandise Authorization (RMA number.  
Product must be received by AEM within 30  days of the date the RMA is issued. 
 
Please note that before AEM can issue an RMA for  any electronic product, it is first 
necessary for the installer or end user to  contact the EMS tech line at 1-800-423-0046 
to discuss the problem.  Mo st issues can be resolved over the phone.  Under no 
circumstances should a system be retur ned or a RMA requested before the above 
process transpires.  
 
AEM will not be responsible for electronic  products that are installed incorrectly, 
installed in a non approv ed application, misused, or tampered with.  
 
Any AEM electronics product can be returned for repair if it is out of the warranty period. 
There is a minimum charge of $50.00 for in spection and diagnosis of AEM electronic 
parts. Parts used in the repair of AEM el ectronic components will be extra. AEM will 
provide an estimate of repairs and receive  written or electronic authorization before 
repairs are made to the product.