Lingenfelter L380xx1410 Lingenfelter Camaro Cast 241 MM Aluminum Differential 2010-12 v1.9 - Manual (Page 6)

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9. Remove the fuel filler cap to reduce the
pressure build up in the tank.
10. Raise the vehicle with a vehicle hoist or a
jack and jackstands. Be careful to follow the GM
lifting procedures on the 2010-2013 Camaro due
to the aerodynamic components being easily
damaged and the low ride height of the vehicle.
Refer to your owner’s manual for correct vehicle
lifting procedures.
5.
11. Remove the exhaust from the rear of
the vehicle to allow access to the tank. This
illustration shows the passenger side exhaust
pipe clamp. The driver side exhaust bracket
needs to be removed as well.
8. You may also relieve the pressure by the
fuel pressure test port on your fuel rail located
on the driver side of the engine. Remove
the cap that is on the test port and bleed the
pressure using a pressure tester/bleed off tool.
WARNING: Be sure to have a device to catch
the excess fuel in the fuel rail. Do not allow any
fuel to get onto any hot spots. Fuel system will
be under pressure. Avoid open flames or any
source of ignition. Wait 2-3 hours after turning
the vehicle off to allow for the pressure in the
rails to partially bleed off.