does anyone else get some afterfire from there cobalt ss when u sift down and is this somethign i should bring it in for.. it seems to happen when your shifting down you hear some backfire ( afterfire) as it seems to me it is...

 

What you're describing is NOT backfiring. It's called AFTERFIRING.

Backfiring is when the unconsumed fuel creeps back up into the intake tract, and ignites IN THE INTAKE MANIFOLD. It's VERY harmful.

Afterfiring is actually what's being described here, when unburnt fuel in the EXHAUST SYSTEM ignites. It's generally harmless, and generally experenced on most cars with free-flowing exhausts like the SS, especially while downshifting

Afterfiring in your SS is okay, and probably even expected. Backfiring is not.

 

my bad thanks bro

 

Yeah happens in my Cavy all the time since I put a nice exuast on

 

yea it happsn in my dads vette all the time with the cat back exuast in it but i fig why would the SS do it it has nothing like that but as long as its nothing to worrie about im fine...

 

The SS/SC is running pretty rich at the top end so I could see some unburt fuel getting into the exhaust and igniting.

I have notice this from time to time as well. Usually when I have been at WOT and let of the gas quickly.

 

i always called it backfiring until sombody corrected me lol
any time man... keep drivin

 

I love the sound when it afterfires. I love the sound of this car in general. Sometimes I like to drive with my windows down and no music just so i can hear it.

 

My S-10 does that. It shoots out flames from what my brother and friends tell me. Also a Gas station clerk told me to not to do that again cuz she dont want to blow up.

 

so im guessing i have nothing to worrie about

 

Nope

 

If I get new headers and hi flow cat, when i down shift will flames come out (already have cat back)????????????????????????????????????????????? ????????

I want that so bad my friends talon TSI does it looks great!

 

I think the cat. cov. will eliminate all the flames. Im not sure, but i know i use to never be abule to shoot flames when i had my cat. cov. on my CRX. When i took it off is when everyone told me it did. Supposably from ppl that watch the race, that everytime i shift fireball shoots out.

 

The LSJ will not shoot flames, even without guts in the cat and a header, downpipe, and large exhaust. Sorry to break it to you...I was a little dissapointed myself.

 

why?????????? i wanted it too soooo badddddddd

 

hahaha you should hear what a 300+hp srt sounds like more like an afterburner...lol

Normal for HP 4cyl's......and v-8's too lots of fuel this is not a geo metro