Stroker87

My son and I was picking up his car from being detailed and told me my c5z was shooting flames out the exhaust

it happens when I ride the gears then shift or when I down shift coming to a red light the car has LG headers and cats but thinking there hollowed out now but any way is this normal or something wrong?

Picture Update:

PeteZ06

It might be running rich if its happening so much.

ZF Six

Likely just running rich and the flames are caused from unburned fuel getting into the exhaust.

It would be a good idea to have the tune checked. Get a video of it and post it here because I bet it looks pretty cool.

Black 03 Z06

What would be a better idea is to provide us with pictures. Flames cool.

I think mine does it as well on downshifts, it pops and bangs out the exhaust and I suspect it flames out on occasion as well.

Stroker87

yeah I'd like to see it too

you guys might be on to something the day my son said it, it was around 70 degrees out today it was only 50 degrees out and didnt do it as bad? can fuel make a difference I put gas at a off brand station i tried to hold out for a brand name but car was really low on fuel had no choice

I'll try to work on a video for you guys

Stroker87

picture bump

seams its just one side (passenger) every time little confused since there is an X pipe

GenerationX1

Cool stuff!! Ha! Ha!

brplatz

That's badass! What's your mods? Cause I want flames out the back!

fisher auto

Is it tuned??

LiteraCola

I'm with brplatz! I would LOVE to have flames out the back. My Cobalt SS/TC does it occasionally when I use the No Lift Shift feature haha.

Stroker87

car has LG headers & kat'd X, varara power duct, B&B Rt66 & ram air & tuned

I'm thinking the kat's are hollowed and the tune is off??

my son said it did but in the video it didnt do it?

95wht6spd

It is unburnt fuel, shouldn't happen that much, I would get it checked. How is the MPG?
I have seen it before, but in highly modded cars.

PeteZ06

Looks badass but get your tune checked. Too rich of a tune will wear piston rings prematurely.

Stroker87

i'm swapping to a fast 92mm intake/LS2 throttle body hopefully soon so it will get re-tuned

4XLR8N

Now THAT is just plain cool!!!

JrRifleCoach

Stroker87

think plug wires might have "help" to do this I swapped wires today and its still popping from a high rpm down shift but not as much