Yesterday at hard drive I already second time got check engine error that was “injected air sensor error” and when I reached 140 mph I had 2 meter length f blue fire from exhaust as I took my foot from accelerator pedal the fire disappeared and made fire burst like “puuuks” my friend thought my car was burning.
Today morning I start engine and no check engine was found the error has been erased it’s self.

what the hell was that ?

 

My words exactly!

 

Running rich and unburnt fuel in exhaust burning off like the hot rods that have the flame throwers. Woody

Pig rich.

 

i think the same but how can fire go through catalyzers ?
and why it goes rich i put Sl 55 intake and 178 mm pulley and no tune or fuel map optimazed, i should not go rich. may it be my spark plugs that have 100 000 miles on it?

 

ummm.... yes, change plugs ASAP. there's no way you are getting a consistent spark after 100,000miles.

 

The catalytic converters literally burn off excess hydrocarbons.

The fire does not go through the catalytic converters. The fire starts from the catalytic converters. Given enough fuel, the catalytic converters will ignite the unburnt fuel.