I drive a del sol w/B16A CAI, CTR cams, DC 4-1 header, and an RS*R cat back exhaust w/cat. The ecu is a propseed chipped P28. Now I know that exhaust is burned fuel, but should the tip of my muffler get black around it??? I also notice some little tiny black spots on my rear bumper just above the tip..... Is this normal? Or is my car running a little too rich??? I drive really hard if that makes any difference...

thanks in advance!

 

bumpski's

 

upper.

 

what do your spark plugs look like?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KRiS1 &raquo;</TD></TR><TR><TD CLASS="quote">what do your spark plugs look like?</TD></TR></TABLE>

Yup..short of a wb02 this is the best check for lean/rich.

 

the soot is normal to a degree, but if your car suddenly started doing this, you should find out why. what did you change recently? everyone gets soot in their tips though. next time you are at AutoZone look inside someone's tip.

-zelif

 

Come check the whole back of my car. Turbo+no cat= back of my car car being covered in soot. **** running a test pipe...I need a cat bad!

 

I run mobil 1 synthetic 10w-30... and it seems to be burning oil now... Could my pistons be bad?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">Come check the whole back of my car. Turbo+no cat= back of my car car being covered in soot. **** running a test pipe...I need a cat bad!</TD></TR></TABLE>

That shouldn't be happening. Your mixture is too rich. If all the fuel was being burned, why would partially burned or unburned fuel be ending up on your trunk? (unless you have an oil leak)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zelifcam &raquo;</TD></TR><TR><TD CLASS="quote">

That shouldn't be happening. Your mixture is too rich. If all the fuel was being burned, why would partially burned or unburned fuel be ending up on your trunk? (unless you have an oil leak)</TD></TR></TABLE>

Wrong. I have a WB02 and have tuned it to 13.6 under WOT (where maximum power for a FI car is) and 14.7 at idle. Don't tell me my setup is fucked when it's not. Its a well known fact that test pipes let soot out of the exhaust and they end up on your car.

EDIT: And my plugs are a beautiful tan color.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">

EDIT: And my plugs are a beautiful tan color.</TD></TR></TABLE>

So are mine.

 

i am running at 12.5:1@WOT at every RPM and I don't get anything on my car, I don't have a cat, and I never wash it. My plugs look good also. I had an engine that burned oil and it put stuff on my car, though. Don't you think a "perfect" combustion would not have particles like the ones you are finding on your car in it when it is done burning? Catalytic convertors do not "eat" these particles.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EG2 SiR &raquo;</TD></TR><TR><TD CLASS="quote">

So are mine.</TD></TR></TABLE>

Then your fine man. Don't sweat it.

EDIT: I'm turbo mang. I make MUCH more exhaust than a N/A car, therefore, I get more soot.


Modified by Ricey McRicerton at 5:57 AM 10/24/2003