General Popin' Backbox
- Thread starter cinqadele
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General Popin' Backbox
Hey, my friend has a saxo and a 106 and he flicks his ignition on and off and pops and sometime flames etc.... Duno if poss on cinq though...
jimbro1000
Established member
The pops are unburnt fuel getting into the exhaust system and then igniting.
My car will happily pop and flame on demand as it runs rich on overrun as part of the mapping. All you have to do is blip the throttle twice while stationary to get the effect. It certainly gets looks (possibly of alarm) on the motorway when I back off after accelerating.
None of this is particularly deliberate though - if you want to make your car do this you need to trick it into running rich which will hurt your fuel consumption and potentially destroy your catalytic converter as this tends to be one of the hottest points in the exhaust it is also where that fuel will most likely ignite. Fortunately my car doesn't have a cat and thanks to some careful recording of details on the V5 doesn't have to have one either which is just as well as it wouldn't last long.
If you really, really must have the overrun backfire effect there are ways to force the fuelling up. To get the flames is likely to be harder, putting a spark plug in the tailpipe (screwed in like a lambda sensor would be) provides an easy way to get ignition but the fuel has to be there. I've seen (very) illegal flamers use butane gas piped into the exhaust especially for this effect. With the engine running the flames extend a couple of metres behind but for all that this may look "cool" it is a surefire way of getting your car impounded or destroyed as the police will take great exception to it if they see it. If they don't get the guy driving the car behind you is likely to get pretty nasty about it when the paint on the front bumper starts to smoulder...
My car will happily pop and flame on demand as it runs rich on overrun as part of the mapping. All you have to do is blip the throttle twice while stationary to get the effect. It certainly gets looks (possibly of alarm) on the motorway when I back off after accelerating.
None of this is particularly deliberate though - if you want to make your car do this you need to trick it into running rich which will hurt your fuel consumption and potentially destroy your catalytic converter as this tends to be one of the hottest points in the exhaust it is also where that fuel will most likely ignite. Fortunately my car doesn't have a cat and thanks to some careful recording of details on the V5 doesn't have to have one either which is just as well as it wouldn't last long.
If you really, really must have the overrun backfire effect there are ways to force the fuelling up. To get the flames is likely to be harder, putting a spark plug in the tailpipe (screwed in like a lambda sensor would be) provides an easy way to get ignition but the fuel has to be there. I've seen (very) illegal flamers use butane gas piped into the exhaust especially for this effect. With the engine running the flames extend a couple of metres behind but for all that this may look "cool" it is a surefire way of getting your car impounded or destroyed as the police will take great exception to it if they see it. If they don't get the guy driving the car behind you is likely to get pretty nasty about it when the paint on the front bumper starts to smoulder...
Mine used to do this, for exactly the same reason. A tuned engine running a custom ECU / mapping and not cat. It used to get a odd looks on the motorway; it would shot small blue/white flames when I lifted the throttle.
RuiG
Member
Not an expert, but I would say removing the cat will get you closer to the desired effect.
Must add that I'm not really a fan of it, unless it happens due to a modified engine. Backfires on downshifts are always fun.
Must add that I'm not really a fan of it, unless it happens due to a modified engine. Backfires on downshifts are always fun.
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A modern ECU controlled injection engine will switch off the fuel completely on the over-run, its an economy measure.
The cat will also dampen any possibility, even if forced, by switching the ignition off and back on.
Its very chavvy, unless you have a prepared competition car, and mine doesn't do it, even though its prepped.
On the other hand, put a carb and no cat and the world is your oyster, providing you don't want an MOT.
Cheers
D
The cat will also dampen any possibility, even if forced, by switching the ignition off and back on.
Its very chavvy, unless you have a prepared competition car, and mine doesn't do it, even though its prepped.
On the other hand, put a carb and no cat and the world is your oyster, providing you don't want an MOT.
Cheers
D
Drill a hole aft of the cat, get a fuel vapour line from the fuel tank, put this line on a metal pipe into your exhaust.
*DO NOT DO THIS ITS PURELY A JOKE IF YOU DO, NOT MY PROBLEM!*
*DO NOT DO THIS ITS PURELY A JOKE IF YOU DO, NOT MY PROBLEM!*
1:47.... "beep beep" he has a toad alarm on it 
(same alarm as mine)
oh.. oh yeah its on fire... that sux.
(same alarm as mine)oh.. oh yeah its on fire... that sux.
My cinq had a flamer kit when i bought it which has now been removed but video of it below
http://youtu.be/0NfhwXDDqeY
http://youtu.be/0NfhwXDDqeY
i did a few experiments with a old side valve engine. custom exhaust with a spark plug about half way down it. quite a large flywheel and ofcorse it was carburettor engine.
i found you could get some nice flames from the over run..
Then i tried it with a 2 stroke.. lol
i found you could get some nice flames from the over run..
Then i tried it with a 2 stroke.. lol
My first thought would be grow up tbh. Its just a cinq sporting From what i have seen of silly boy racer cars stick an unnecessarily large jap-can style exhaust on it and make the car sound stupid and like it farting all the time and probably reduce the power it has then you will get more pops..
From what i have seen of silly boy racer cars stick an unnecessarily large jap-can style exhaust on it and make the car sound stupid and like it farting all the time and probably reduce the power it has then you will get more pops..
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I see "Popin'" in the thread title and I have visions of a backbox standing on a balcony with a pointy white hat and white robes on, waving at a lot of Catholics ....
Mine did it for fun even on a p75 cam, the exhaust made the difference
I see "Popin'" in the thread title and I have visions of a backbox standing on a balcony with a pointy white hat and white robes on, waving at a lot of Catholics ....
I thought it was a new KFC food..
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its finger lickin good
hehe but it is childish, maybe the op would want a fake dump valve and 1 of those novelty keyrings that plug in your cigarette lighter and make your car sound like a ferrari too lol
