Unusual question about backfire

Dunckel

Active Member
Jan 16, 2007
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What I am wondering is when the car backfires (afterfires), does the flame make it all the way out of the muffler? I haven't had anyone follow me yet to tell me yes or no. I have seen videos of cars backfiring and you can clearly see flame. Just wondering if every backfire produces a flame that can be seen from the rear of a car. Mine can be freaking loud.
 

Ckanderson

Supramania Contributor
Apr 1, 1983
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I had a backfire at night once, under an overpass.... lit up the entire overpass :momaru:

suprised the hell outta me!
 

AGlobalThreat

Acceleration
Apr 4, 2005
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Not every backfire will have a flame. It only happens to me when the exhaust is hot after boosting. My best friend helped me move and after following my car he said it shot 2 big flames, pretty sure it happened right after boosting.
 

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
My twin turbo v8 240z had 4" sidepipes and used to make a LOT of flame on overrun, out in the country at night if you gave it a big squirt and backed off it was daylight both sides of the car ;)
(accidently burnt a cyclist slowing in traffic)

 

Dunckel

Active Member
Jan 16, 2007
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Poodles said:
it can...

do you have a cat, and what exhaust do you have?
Nope, no cats here. The exhaust is a custom 3" with a straight through muffler.
And it also only does it after boosting. Not everytime though. I would say 20% of the time going from 1st to 2nd. Maybe 10% of the time in any other gear. If I shift at a lower RPM, it doesn't backfire.
 

Poodles

I play with fire
Jul 22, 2006
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mine will do it on occassion, but I'm thinking it's the faulty TPS (which is being replaced tommorow)

but yes, with a full turbo back exhaust with no cat and a straight through muffler, yep you'll spit flames....
 

Dunckel

Active Member
Jan 16, 2007
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Sweet! I'll have someone follow me and try to get some video. Not that anyone else cares, but for my own satisfaction. lol.
But wait, aren't explosions bad?
 

suprahero

naughty by nature
Staff member
Aug 26, 2005
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Explosions are only bad if they hurt someone you love. Other than that pyromania is saweeet...............:evil2:

Bring on some videos!!!!!!!