Chevrolet LT1 Mode D'emploi

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This control system is a stand alone, fully-integrated kit designed to run Chevrolet Performance LT1 series crate engines with
58x crankshaft reluctor wheels, 4x camshaft indexing, and electronic throttle control (ETC). This engine control kit is designed
to operate a "GEN 5" V8 only, it is not designed to operate any earlier engine configurations. Included in the kit are the engine
control module (flashed with the appropriate calibration), Fuel Pump Power Module, engine harness, accelerator pedal, mass air
flow (MAF) sensor, MAF sensor mounting boss, Fuel Line Pressure Sensor, oxygen sensors (2), and oxygen sensor mounting
bosses (2). This control system is intended for use with a returnless fuel system and fuel pump that is capable of being pulse width
modulated (PWM) at 25 kHz to control fuel pressure. A fuel flow rate of 45 gph at 72 psi (500 kPa) is needed. Because this is a
dead headed system, a pressure relief set at 84 psi (580 kPa) must be included in the fuel line between the tank pump and the
engine mounted high pressure pump.
Chevrolet Performance Part Number 19303293 is one example of a compatible fuel pump and it includes an internal pressure
relief system. If using this pump, the lower port on the module may be left open or used to connect a remote pick up system. P/N
13587174 is connector pigtail for this pump and is available from your local dealer.
A pump with excessive capacity may result in cavitation at low flow due to the pump repeatedly stopping and starting instead of
controlling to a speed/pressure. Alternatively, a fuel system operating at a fixed 72 psi (500 kPa) could be used and a fuel pump
relay may be triggered by the Green/Gray wire in cavity 2 of the Fuel Pump Power Module (FPPM). Note that excessive fuel
heating and potential startability/drivability issues may result from a constant high pressure.
IMPORTANT: Read the 'System DOs and DON'Ts' section below before attempting to install the engine and then review
again before attempting start the vehicle. Note that if the engine will not come off idle after the control system installation,
check for an illuminated MIL (malfunction indicator light, which is located in the fuse/relay center, sometimes called the
"Check Engine Light" or "Service Engine Soon" light) which indicates stored fault codes. Check for codes and make any
required repairs if the MIL is illuminated (typically it is a connector issue or a wiring issue), consult a service manual if
necessary (2014 - 2015 Corvette).
Observe all safety precautions and warnings in the service manuals when installing this package in any vehicle. Wear
eye protection and appropriate protective clothing. Support the vehicle securely with jack stands when working under or
around it. Use only the proper tools. Exercise extreme caution when working with flammable, corrosive, and hazardous
liquids and materials. Some procedures require special equipment and skills. If you do not have the appropriate training,
expertise, and tools to perform any part of this conversion safely, this work should be done by a professional.
System DOs and DON'Ts:
Do:
• Ensure all intended engine/vehicle side connections are made before connecting ignition or battery power to the system.
• Ensure the wiring harness is secured as required, and that the routing avoids locations which can potentially damage the wiring
(e.g.: sharp edges, pinch points, rotating components, exhaust components, etc.). Make sure any unused connectors or wiring
are properly secured and protected (sealed or taped as required to avoid short circuiting).
• Ensure all engine and wiring harness grounds are clean and secure. Minimum ¾ inch braided strap from the engine to the
vehicle chassis is recommended.
• Ensure the MAF sensor is oriented correctly in the induction (it will only read correctly in the proper direction). An arrow is
located on the sensor indicating correct flow direction. Verify this before welding the mounting boss, as the sensor will mount
only one way in the boss.
• Ensure the MAF Sensor is mounted in the middle of a minimum 6 inch length of 4 inch diameter tube, and is a minimum of 10
inches from the throttle body.
• Ensure the fuel pump has the following flow capability: Minimum 45 gph @ 72 psi (500 kPa).
• Ensure battery voltage is connected using a minimum 8 gauge wire to one of the studs on the fuse block.
LT1 Control System
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.
LT1 Crate Engine Control System
Part Number 19303139
REV 02JN16
DATE
02JN16
19303139
PART NO.
REVISION
Previous Revisions are Archived
Revision - Blake Nye
1 39
SHEET OF
AUTH
N/A