I have a Injen Exhaust, w/ crawford cats and plenum and a JWT PopCharger. I have started to notice that I have one exhaust tip that is a little darker than the other. I know it means something but I am not sure what. And when I say darker I mean more of a carbon deposit than the other tip. Any help would be greatly appreciated. Thanks!!

 

I know that some folks on these forums have had issues with the Injen exhausts blowing their guts out. Do a quick search on it, and you will find some documented issues of this.

 

some of the older gen exhausts have had problems around the primary pipes (the ones that attach to the cats)...black deposit means burnt gas i think which means you are running rich...i might be wrong

 

Mine literally spits black carbon... I must be very rich? I have to get a real setup. I think you will see some smoke when you are running rich at startup.

 

i just read your list of mods again..you are pretty free flowing so its not surprising that this is happening