tc_rida

So I was just wondering about when I'm running my car and I shift at a high RPM why would their be a poof of black smoke that comes from my exhaust? It's done it for the longest time but I'm guessing it's not hurting anything. I'm just guessing I'm running rich but is there anything I can really do about it on a N/A car??

rosedaleny806

mine does the same, always has really. its carbon buildup poofing out

Xx AzN xX

iTrader: (14)

ohhh wow this happen to me...lol i just posted..haha

tc_rida

I really never thought as this being a problem but I thought I'd ask anyways!

weezyfbayba

cuz u drive a race car like ricky bobby

jct

cause the car is running rich when you tromp on the gas

in my old car i was able to leave to black soot marks on the driveway while my car was warming up

DeathStalker

when you're shifting you still have spent exhaust gases in your exhaust system. the back-pressure creates a negative vacuum for a quick second til you change the gear. all the trapped exhaust then gets pushed out, the exhaust before and after the shift mix which makes it darker.

if you're blowing out black smoke constantly your motor is toast.

rangerryda

iTrader: (1)

The factory ECU likes to make the car run rich up top in the RPM band. If you are running no cats, then you will likely see this.

tc_rida

Oh okay that clears up a lot. My car doesn't smoke all the time or much at all only on high RPM shifts. Thanks a lot!

rosedaleny806

^ oh yeah? spamming for 50 posts?

DeathStalker

yea i saw that in a couple threads i was like wtf

tc_rida

Spamming for 50 posts. What are you talking about?? Rose? Do you get a prize at 50 post or something??

rosedaleny806

that actually wasnt for u, was for sum1 else posted after u that but he got banned quickly. once u get 50 posts ur able to sell in the PPC's, and people tend to write just anything to get 50

he wrote "sucks"

tc_rida

Oh okay, I was like wtf lol I'm kinda new to this site...what is the PPC??