z3Ro

ive always wonder what makes this occur on sports cars on the track...is it kuz of high heat...xtra fuel output...or something else? 1 thing i know of sure is that it only occurs downshifting to high revs...just wondering kuz itll b pretty sick to have on our cars...any1 know...?

optomos

They have a strait pipe comming from the headers to the rear. So there is no cat, muffler etc.

1st timer

running really rich.

z3Ro

but thats illegal here in CA...isnt it illegal everywhere else too?...so how would they pass smog?

optomos

In upstait NY you would have to worry about smog but thats the least of your worries. You know how loud a harley motorcycle is? Well, 4X that!! You would have to wear earplugs just to drive it and your neighbors.....

aaronnn

flamethrowers added on to the tip of the muffler.

im pretty sure nos would make this occur too. ive seen it on many cars and whenever they downshift, the flames go crazy.. its definitly not just a straight pipe going from the headers to the tip because i know ive seen some really quiet cars that are spitting flames too

z3Ro

but flamethrowers r so gay tho...i just want that backfire n flame effect when downshifting...not a gay sfx used in movies...aka...fast n furious....is there any1 here on the forum that took out the cat? sound clip or movie?

ZeroPSI

place spark plug in tail pipe

vishnus11

i doubt that the mixture would be rich enough to ignite. You'd probably have to have a seperate fuel line running to the pipe.

55M2G7L

wrong section bro, well my friends skyline and my other friends sr20 240sx both do it, and theyre both running really rich, i know occurs more in turbo cars than N/A, well at least from what ive seen, backfire

JnC

iTrader: (12)

1) High output turbo
2) Free flow exhaust
3)big down pipe
and you have a car that would be throwing flames everytime you hit redline :P

z3Ro

lol...thx for all the input...wish i had a skyline...so our cars will never b able to do that?...even tho i get a hi-flow cat?...n when u said down pipe...do u mean the xhaust sys pipe?...

JnC

iTrader: (12)

^^ No downpipe is the pipe that comes down, in case of a turbo, from the turbo down to the exhaust system The only way our cars can throw flames is with a flame thrower kit, and you dont want that, that system is made for cars without a cat, and running system rich will fuck the cat up. btw a wrx and an evo can also backfire and throw some flames

Pure Adrenaline

iTrader: (2)

It's possible to do it in our cars, if you ran without the cat and have straight pipes. Our cars tend to run rich up top, anyway.

z3Ro

just wish theres a way to do it w/o removing the cat n buying a flamethrower kits...thx y'all

drquasievil

It's definitely illegal in New Jersey. There is no much gas in the air it will blow up the state.

55M2G7L

good post