Thread: flames from exhaust?

Not sure how long this has been going on but I noticed this the other night... I'm goin WOT to test some knock which turned out to be none (thank god) but when I let off I'm getting some fames out the back like its backfiring... Only its not backfiring... Anybody else have this happen? Know why?

cuz it looks cool that why



no seriously idk why, hope you get what you need

Wow... Mine aren THAT insane lol

How do you know its not backfire?

You should sign up for the next fast and the furious if you are getting flames LOL

sounds like you are running pig rich.

But really you may be running really rich

Because I know what a backfire feels and sounds like... And I honestly would never have known about this unless I saw it happen when it did it...

my old truck was running really rich, it was shooting flames out the exhaust. But when I looked underneath.... the muffler was cherry red.

There's different types of backfire. You can have backfire without a big pop.

Wideband is saying 11.5 so its not too rich... Think it could be the toluene? I mean I'm 3 inch with no cat and headers so I dunno...


I'm just worried its hurting my car a lot ya know?

Thats AWESOME wish i had flames......

Well ya it is kinda cool but if its hurting my car or its performance I want it stopped

i hear ya. itd scare the shhh out of me if I saw that on my car

it probably has a little to do with the race gas youre running. first question, why?

otherwise, speaking of 3800s in general, most backfire at least a small amount when they let off the throttle completely after going heavy into it. mine always did.

Originally Posted by Bio248

otherwise, speaking of 3800s in general, most backfire at least a small amount when they let off the throttle completely after going heavy into it. mine always did.

That is your answer right there...mine had massive backfire with resonator and muffler delete, I had to put a glasspack

I tried it because now that I live in lawrence, 91 octane is the highest I could get and I'm used to 93... So I was knocking a little bit and now threw some of this in to make up for it... I'm not really even running that much of it...

most of the time when you see a car backfire and shoot a fireball is because at the shift they are running super rich, but you normally notice this on turbo cars because of how they shift, bleed boost, etc.