anyone's exhaust spit flames?

luigi90210

if you were to straight pipe a stock 370z, it will spit flames because its super rich from the factory(heck if you listen for it, you can hear some popping on deceleration on a stock 370z sometimes but there are no flames because the exhaust has a cat, resonator, and muffler)

exhaust flames(aka backfire) comes from unburnt fuel passing through the exhaust and igniting inside the exhaust from the extreme heat


EDIT:
Just read through the entire thread, so it seems lean and rich will cause backfire, i never thought a lean condition would cause backfire
I learned something new today