May 22 2008DIY Car Mods: Flamethrowing Exhaust Kit

This is a joke, right?
How is this even remotely legal?

Well, this sure sounds SAFE and FUN! :D

Does this work on toasters?

Why not just mount the thing to your ass?

Of course there are going to be some fruit loops out there that will push the law on this and guess what? They will get fined.

Finally!! I've been waiting forever for something like this to come along. I'm going to attach this thing to the back of the ice cream truck I bought last week. This will teach those damn kids to follow me. Geez! always with the yelling and screaming. who said I sell ice cream? can't I drive around in my truck without people making assumptions? . . . little bastards.

The more expensive high-flow exhaust systems (cat-back, flowmaster, etc.) have certain exhaust systems that when a certain rpm is reached (usually close to red-lining) the exhaust shoots flames...just like in the cars in the Fast & the Furious (the first race scene with all four cars).
Spend the extra hundred or so, get a street-legal exhaust and get the similar desired effect. True the exhaust doesn't shoot twenty foot flames, but it does shoot flames in different colors.

*slap*@ #6 for referencing the Fast & the Furious

I'm pretty sure my car already has a flamethrower -as far as I can tell anyway- because it's hard to see through all the smoke that appears everytime i start the thing and logic suggests that where there is smoke there is fire/ deadly flame throwers attatched to your tailpipe.

Mr. #6:

The flames in the FF movies are unrealistic b/s.

Flames coming out of cars in the Real World are very short in length, duration, and very bland in color.

Cat-back is a type of exhaust system meaning from the catalytic converter to the rear of the vehicle, not a brand.

Flowmaster is NOT a more expensive exhaust system (Low end in fact).

You do not achieve exhaust flames in cars from "reaching a certain rpm near redline".

Generally cars which show exhaust flames are running rich, mean they are running a high air-fuel ratio. Also running without catalytic converters will increase the odds, as generally cats will dampen the back/post firing enough to inhibit flames.

That being said, instead of spending 125$ on a kit, you can just wire a spark plug to a switch and install it into your exhaust piping, which is basically what this kit does. Note that you need to make your car run very rich for this to work effectively without a fuel fogger system, and it also will most likely damage your catalytic converters.

@5, stop playing the tacky music, problem solved.

#7: It was only a 'reference' for the sake of people who didn't know what I was talking about.

#9: Yeah I know the flames in FF were fake, I was merely using it for a point of reference, not to say they actually look like that. However it is very possible to get colored flames. Any chemist can tell you this. You can burn different metals to get different colors (copper burns red, iron burns green, etc.).

I'm not sure if you were explaining to me or to the readers what cat-back meant, but I'm aware of what it means and what it does. I didn't mean that flowmaster and certain types of cat-back systems were the more expensive ones, I meant that out of those, if you got the more expensive ones, you'd get a better exhaust...my mistake for not making that clear.

Regarding the actual flames, I agree, it definitely can be done better with no catalytic converter. When you reach a higher RPM, the air/fuel mixture is almost always higher than at lower RPM's, it's just how it goes (that's why the flames usually appear right before shifting to the next gear, since that's near redline). There are many smaller factors that can aid is getting the desired flame effect: right size injectors, better performance plugs, a LOT of air, and perhaps a high-flow cat-converter or none at all (though in many states, no cat-converter is illegal). Also, you can redirect the unused fuel line to go out with the exhaust and do it that way.

In any case, I may have been misunderstood and I can see why based on how I wrote it. The spark plug thing in the back is ineffective, as you'd need a 6AWG wire going all the way back to spark it and a good ground point.

To "Guate6":
you sir are an idiot.
chris: #9 is correct. cept flowmaster is expensive. specially over stock and custom.

If you car shoots flames with modification like that then you car is NOT running right. Changing Spark plugs and adding more air will more more fuel burn which will inturn make less unburnt fuel. At higher RPM's your car will actually lean your car out. Which will mean less fuel more air. Which will cause more burnt fuel less unnburnt. Again. And what unused fuel line are you talking about? And how the hell are you going to get different color flames you moron. Are you going to get a nice thing copper exhaust or a heavy iron exhaust.

once again your an idiot

*you're*

petrol heads didn't go to english class.

impressed with #9 who is a petrol head, and went to class it seems.

Obviously explaining technical jargon is useless. I'm not admitting defeat or fault, as there is none on my part. I wrote what I wrote because I actually know what I'm talking about. Not only in what I have read, but based on the cars I've worked on.

In any case, I suppose by you (#12) calling me an idiot, that proves you right, so there you go...15 seconds of fame just passed, I hope you enjoyed it.

gaute6: the reason flames shoot from exhausts with no real modification, near red-line, is called ignition cut. Ignition cut stops the coils from firing inside the cylinder, therefore the fuel is not burnt, therefore cutting the revs at a set RPM. When the coil fires again, it burns the unburnt fuel inside the exhaust and throws it out the back. So, I'm not trying to hang you out to dry, but don't claim you 'actually know what you are talking about' until you actually do. It just makes you look silly. And as for you knowing all this stuff, after working on all these alleged cars, I feel sorry for your customers...

A cat-back means it's from the Cat... Backwards. A cat will normally catch the unburnt fuel anyway, that's what it is there for, emission control.

If you are planning on running your fuel return line into your exhaust... NO NO NO NO NO NO! You'll kill yourself, break laws, and possibly injure someone nearby. Plus it is HIGHLY illegal! A cat is made for collectiong illegal fumes, what do you thing raw fuel will do??

Chris, you my friend do seem to know what you are on about.

gaute6: the reason flames shoot from exhausts with no real modification, near red-line, is called ignition cut. Ignition cut stops the coils from firing inside the cylinder, therefore the fuel is not burnt, therefore cutting the revs at a set RPM. When the coil fires again, it burns the unburnt fuel inside the exhaust and throws it out the back. So, I'm not trying to hang you out to dry, but don't claim you 'actually know what you are talking about' until you actually do. It just makes you look silly. And as for you knowing all this stuff, after working on all these alleged cars, I feel sorry for your customers...

A cat-back means it's from the Cat... Backwards. A cat will normally catch the unburnt fuel anyway, that's what it is there for, emission control.

If you are planning on running your fuel return line into your exhaust... NO NO NO NO NO NO! You'll kill yourself, break laws, and possibly injure someone nearby. Plus it is HIGHLY illegal! A cat is made for collectiong illegal fumes, what do you think raw fuel will do??

Chris, you my friend do seem to know what you are on about.

Apoligies, I posted it twice. Sorry.