back fire is completely different, thats the result of your engine firing ... well backwards.

 

yea my buddies gsx shoots out a little flame. i think its because of having no cat though. see hes got that apex down pipe and yada yada. it never did it befor when he had his stock exhaust. id have to say its kinda sick seeing it

 

ha... not quite... it's usually a result of running too rich (i.e. taking ur foot of the gas really quick when shifting) or timing being off/too retarded...

 

yup used2baracer is right.
I shoot flames everyday ...
I have no muffler my exhaust ends under the car before the bends and 2 to 3 times a day I hear and feel a blaaaammmmm and....people in other car tell me at the stop light that my car was on fire

 

back firing is like a mis fire, except that the explosion occurs somewhere in the headers. I'm talking about generating fireballs in the exhaust, and its only plausible without a catalytic (or a gutted) catalytic converter. Because the device itself demeans the entire ability to do this.

 

there's really only two possible reasons to fart fire...
#1 is a rich condition
#2 Hydrogen...

#1 there might be fuel making it's way past the glowing turbo into the exhaust and upon closing the throttle the flow of exhaust decreases so rapidly that the pressure decreases so quickly the gasoline reaches some sort of flashpoint or whatnot?

another thing ight be that the h2o that is formed actually decomposes inside the hot turbocharger and after closing the throttle...refer to above.

I think #2 is kind of out there, but ifthe flame was a bright white then it might be plausible?

 

So, umm...why hasn't anyone mentioned ALS (Anti-Lag System) aka bang bang? You retard the hell out of your timing, let some fuel into the turbine and boom...keeps your turbo spooled between shifts.

Gotta do that when goin downtown...watch everyone hit the ground...

-Tim

 

LOL.... only thing i've seen that on is rally cars...

 

yeah me too... whats with that

 

both mine and a friends sohc vtec civics with no cats would shoot fireballs when shifting, but now that im boosted, it hasnt done it..