chryose

I just got a question.. I am not sure if I need to get this looked into but I just had a ultimate racing catback exhaust installed and my buddy noticed when I hit the gas pretty hard I have black smoke come out of my exhuast. any info would be great.

Jookies

Well from what I understand, black smoke is just unburned fuel, usually from running a little rich. Nothing to be alarmed about... A tune would fix it if it bothers you.

chryose

aight so its not going to harm my car in any way?

sstevojr

iTrader: (7)

No perfectly fine, just bad gas mileage and bad for the environment

Rally_Time

Actually the black smoke could be due to the new exhaust you got put in. When i put a borla exhaust w/ xpipe on my vette it smoked for maybe a week or 2. I was told at the time it is due to the residue or oils in the piping. So it should work its way out. Also it could be due to running rich. But if it just started with the new exhaust, I am def leaning towards it will go away....

RalliartMike15

I have the cp-e exhaust and black smoke still shoots out 15,000 miles later. I don't think it will go away until the car is tuned.

BravoZero

iTrader: (2)

It's my understanding that because the multiple computers on this car are very sensitive, whenever any performance mod is added a tune must be done in order for everything to work properly. You might want to head to the nearest performance shop and have them tune your computer for the new exhaust.

Veronica

iTrader: (2)

Probably both. The car runs rich on stock tune but more so the oils from production are burning off.

My Protege5 runs pig-rich at WOT - but you don't 'see' black smoke. I just have excess carbon on the intake manifold and EGR that i have to seafoam once every 30K miles...

03chi-town0Z

iTrader: (7)

watch and see around 1:02. yea, thats my ugly, stickered-up beast on its first street tune only, before getting a proper dyno tune

http://www.youtube.com/user/evoxmrow...13/Wdg54fS378k

RADriver

Running rich which is how the RA comes stock. No worries.

BravoZero

iTrader: (2)

I can tell it runs rich, I only have about 1k on the clock and the very tip of the exhaust finishers are black.

Lu_Po09

tune that biotch to run a little leaner than what it does now. wont get as much smoke out of your exhaust and youll more hp out of it too, win win.

BravoZero

iTrader: (2)

I'm going to be doing the GST basemap flash here soon, that should help.

japan101

iTrader: (1)

If you buy an Exhaust and dont have your car tuned, you are going to see black smoke when you get on the gas. It is the stock tune from the factory that is running the car rich as a safety precaution.

If you see White Smoke, that is when you need to start worrying.

total0wnage

iTrader: (4)

this^ +1