* Install a smoke tuner. This is a device that plugs into your vehicle's computer and alters the fuel injection timing and air/fuel ratio to produce more smoke. Smoke tuners can be purchased online or from auto parts stores.
* Modify your turbocharger. This can involve increasing the boost pressure, adding a larger turbocharger, or installing a turbocharger wastegate. These modifications will all cause the engine to produce more exhaust gas, which can lead to more smoke.
* Install larger injectors. This will allow the engine to inject more fuel into the cylinders, which will also produce more smoke.
* Use a fuel additive. There are a number of fuel additives on the market that claim to increase smoke production. These additives typically work by increasing the lubricity of the fuel, which allows the fuel to burn more efficiently and produce more smoke.
Remember that these modifications can void your vehicle's warranty and may also make it fail emissions inspections. If you are not comfortable making modifications to your vehicle, it is best to leave this to a qualified mechanic.
