Hey guys, i was at the local street races and i saw some mustangs and even some honda's shooting flames out the rear of the exhaust!!! I was like

Cause i thoght that in F&F it was special effects! But i saw em with my own eyes!! How does one do this? I wanna make my car shoot out fire too! and NO I DID NOT SEE A APC AFTERBURNER LED TIP EXHAUST!