Your Gen6 Camaro ZL1's stock intercooler system is... insufficient. The stock setup comes with a tiny amount of fluid and when you are doing pulls that tiny amount simply isn't enough to absorb and reject heat. When your intake air temperature (IAT) reaches 140 degrees or so your ECU starts pulling timing (power) from your setup.
This ZL1 expansion tank installs very easily and usually without removing the fender. All hoses and quick connects are included in the kit and install is as simple as tapping in to two fittings. There's also a top-side bleeder for easy tank fill.
Capacity: 2 gallons