Installation Manual: GM LT1_A1R13E
Last Updated: February 12th, 2019
Page 5 of 36
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PRE-INSTALL INSPECTION WITH SCAN TOOL (VERIFY CONDITION OF
ENGINE)
NOTE: To insure compatibility It may be necessary to have the ECM/TCM updated by a GM Dealer
to the most current stock calibration before the Whipple calibration is installed. It is recommended
to do this before installing the supercharger kit. Many times, this will fix potential issues with GM’s
calibration updates.
1. It is advised to inspect the vehicle before install the supercharger kit as any potential problems can be found easier
before the SC installation.
2. Carefully remove the supercharger system from its packaging and locate the SCT downloader.
3. Connect the flash tool to the factory OBDII port, turn the ignition to “ON”. Read the DTCs and data from the
ADVANCED FEATURES prompt.
4. The car that you are installing the supercharger on should not have stored trouble codes. IF VEHICLE HAS A STORED
TROUBLE CODE OR HAS A DRIVEABILITY PROBLEM THIS SHOULD BE ADDRESSED BEFORE PROCEEDING.
5. The first data to be inspected is the LONG FUEL TRIMS. This data is a direct correlation of the air/fuel mixture.
PERFECT long fuel trims are 0 (this means the ECM is adding no fuel OR not subtracting fuel. In the REAL world, the
fuel trims -4 to +8 are considered to be correct).
6. With the engine warmed up at idle Inspect long fuel trim Bank 1 (1,3,5,7) and long fuel trim Bank 2 (2,4,6,8), if the
data is within -4 to +8 this is normal.
7. (Complete kits only) Make sure your battery is fully charged before installing, if not, install a battery charger to
maintain 14volts. Kits not using the Whipple supplied tune are not 50-state legal and are for off-road use only.
NOTE
**NOTICE: Installation of Whipple Supercharger products signifies that you have read this document and have
agreed to the terms stated within.
It’s the purchaser’s responsibility to follow all installation instruction guidelines and safety procedures supplied
with the product as it’s received by the purchaser to determine the compatibility of the product with the vehicle
or the device the purchaser intends to install the product on.
Whipple Superchargers assumes no responsibility for damages occurring from accident, misuse, abuse, improper
installation, improper operation, lack of reasonable care or all previously stated reasons resulting from
incompatibility with other manufacturer’s products.
There are no warranties expressed or implied for engine failure or damage to the vehicle in any way, loss of use
or inconvenience or labor reimbursement. This includes merchantability and fitness.
NEVER SMOKE DURING THE INSTALLATION OF THE SC, THERE WILL BE
FLAMMABLE FUMES AND LIQUID AROUND THE VEHICLE
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