Chevrolet Performance LT4 E-ROD Directives D'emploi page 4

Oil Fill Cap and Tube
This kit is supplied with the engine oil fill tube and cap.
OIL FILL TUBE AND
CAP
Cylinder Deactivation - Not Used with Chevrolet Performance Engine Control Kit
This engine is used in the Generation 6 Camaro and Generation 3 CTS-V. In production, to provide maximum fuel economy under light load driving
conditions, the engine control module (ECM) will command the cylinder deactivation system on to deactivate engine cylinders 1, 7, 6, and 4, switching
to a V4 mode. The engine will operate on 8 cylinders, or V8 mode, during engine starting, engine idling, and medium to heavy throttle applications. This
system requires many inputs (weight of vehicle, tire size, final drive ratio, etc.) to work properly. These parameters are unknown when selling the
Chevrolet Performance engine controller kit. Due to these unknown parameters as well as the need to tune the motor mounts and exhaust system for
operation in both V8 and V4 modes. The Chevrolet Performance engine control kit disables this feature. The engine has not been changed, so cylinder
deactivation hardware is still present.
Ignition System
The Gen-V has an advanced 58X crankshaft position encoder to ensure that ignition timing is accurate throughout its operating range. The 58X
crankshaft ring and sensor provide more immediate, accurate information on the crankshaft's position during rotation. This allows the ECM to adjust
ignition timing with greater precision, which optimizes performance and economy. Engine starting is also more consistent in all operating conditions. In
conjunction with 58X crankshaft timing, the Gen-V applies the latest digital cam-timing technology. The cam sensor is located in the front engine cover,
and it reads a 4X sensor target on the
camshaft phaser rotor which is attached to the front end of the camshaft. The target ring has four equally spaced segments that communicate the
camshaft's position more quickly and accurately than previous systems with a single segment. The dual 58X/4X measurement ensures extremely
accurate timing for the life of the engine. Moreover, it provides an effective backup system in the event one sensor fails. Air Induction Humidity Sensor:
This new feature ensures optimal combustion efficiency, regardless of the surrounding air's humidity. Coil-on-Plug Ignition: The Gen-V's individual coil-
near-plug ignition features advanced coils that are compact and mounted on the rocker covers, although they are positioned differently than on Gen-IV
engine. An individual coil for each spark plug delivers maximum voltage and consistent spark density, with no variation between cylinders. Iridium-Tip
Spark Plugs: The spark plugs have an iridium electrode tip and an iridium core in the conductor, offering higher internal resistance while maintaining
optimal spark density over its useful life. The electrode design improves combustion efficiency.
Fuel System
Low Pressure (Fuel Tank to Engine)
The engine control kit includes a Fuel Pump Power Module that must be used to regulate fuel pressure. The ECM will set codes, but the MIL light
(located in the fuse box) and the MIL wire will not be energized. The ECM diagnostic parameters in the ECM will set a code if the ECM does not "see"
the FPPM and sensor. The ECM will recognize that those items are not being used. This could potentially cause rejection during state mandated
inspections. The production system uses a returnless variable flow/ pressure system that has been incorporated in the Chevrolet Performance engine
control kit. A returnless fuel system reduces the internal temperature of the fuel tank by controlling the speed of the fuel pump and not returning hot
fuel from the engine to the fuel tank.
LT4 E-ROD Instruction Sheet
PART No.
REV 04DE19
19370613
SHEET
4 of 83