Fire ball
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From: PHX/SD=home away from home
Joined: Nov 2007
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From: Illnoise. WAY downtown, jerky.
So much fail in this thread.
A N/A car with a test pipe can very definately shoot fireballs. Unburned fuel goes into the exhaust stream all the time and ignites. Without the cat there, the fireball travels through the exhaust and comes out the tail pipe.
If you have mufflers with baffles, it just sounds like loud pops. If the muffler is more straight through, you see a fire ball as well.
It's not going to damage anyone else's car. They'd have to be about 3'' off your bumper literally for it to even start to maybe damage their car. They don't go out like 50 feet. They're just little pops with flames.
My 240SX shot fire balls all the time with the SR20DET. Might have had something to do with a non-recirculating BOV, but that doesn't matter. MAF, MAP, whatever....F.I. gasoline cars are going to shoot fire balls if you don't have a cat.
No, it's not detonating fuel...or whatever else. For WHATEVER reason, if unburned fuel goes past the exhaust valves with enough volume to create a flame....it will create a flame if it ignites.
So if you have a hot exhaust from driving (especially driving hard), and downshift (blipping the throttle), you might get a flame.
If you hit a spark cut rev limiter, you're going to have flames FOR SURE. My SR20DET had a spark cut rev limiter (stock) and a spark cut speed limiter (stock). It would shoot CONSTANT flames if I laid it on one of those. The S2000 has a fuel cut limiter before you start getting too moist.
If a car is shooting fire balls when the throttle is down and you're just accelerating...it means it's probably not tuned correctly. Usually, flames occur when all the fuel hasn't been burned off. Downshifting or between shifts is common and normal for gasoline powered F.I. cars without a cat. It also happens on gasoline powered N/A cars all the time.
In short:
-Unburned volatile fuel + spark/heat source = fire. We learned this in elementary school. Without a cat there to spoil the fire party...it exits out the tail pipe.
-Yes, this applies for NA cars as well.
A N/A car with a test pipe can very definately shoot fireballs. Unburned fuel goes into the exhaust stream all the time and ignites. Without the cat there, the fireball travels through the exhaust and comes out the tail pipe.
If you have mufflers with baffles, it just sounds like loud pops. If the muffler is more straight through, you see a fire ball as well.
It's not going to damage anyone else's car. They'd have to be about 3'' off your bumper literally for it to even start to maybe damage their car. They don't go out like 50 feet. They're just little pops with flames.
My 240SX shot fire balls all the time with the SR20DET. Might have had something to do with a non-recirculating BOV, but that doesn't matter. MAF, MAP, whatever....F.I. gasoline cars are going to shoot fire balls if you don't have a cat.
No, it's not detonating fuel...or whatever else. For WHATEVER reason, if unburned fuel goes past the exhaust valves with enough volume to create a flame....it will create a flame if it ignites.
So if you have a hot exhaust from driving (especially driving hard), and downshift (blipping the throttle), you might get a flame.
If you hit a spark cut rev limiter, you're going to have flames FOR SURE. My SR20DET had a spark cut rev limiter (stock) and a spark cut speed limiter (stock). It would shoot CONSTANT flames if I laid it on one of those. The S2000 has a fuel cut limiter before you start getting too moist.
If a car is shooting fire balls when the throttle is down and you're just accelerating...it means it's probably not tuned correctly. Usually, flames occur when all the fuel hasn't been burned off. Downshifting or between shifts is common and normal for gasoline powered F.I. cars without a cat. It also happens on gasoline powered N/A cars all the time.
In short:
-Unburned volatile fuel + spark/heat source = fire. We learned this in elementary school. Without a cat there to spoil the fire party...it exits out the tail pipe.
-Yes, this applies for NA cars as well.
