All,

Swapped cars with a buddy of mine during a recent spirited drive and noticed small puffs of smoke coming from my car's exhaust during upshifts (must have been close to redline). First time I was able to observe my own car in action and while I know it is in perfect condition wanted to run this by the experts. Is this normal ?

The car is modded (see below) and I regularly hook it up to the Durametric since I perform all my maintenance myself. Also, it has no critical overrevs nor consumes any oil.
Somebody please give me some piece of mind

 

wouldnt worry about it .

 

What's the color? If it is black, there is nothing to worry about - just a car running rich. If it is blue, you're burning some oil, possibly in turbos. If it is white, then it could be something sinister.

 

It's black.

 

You're good, if it's only high RPM's...

 

Nothing to worry then. Just some unburned carbon from running a bit rich during the upshifts. You might want to check your air/fuel mixture with durametric to make sure you're not running rich all the time.

 

Thanks. Any link to that ? Similar to others, I have not been able to extract the maximum out of my Durametric.

I performed my bolt-on upgrades myself, but didn't really adjust anything else to the car during this process. I was under the assumption that the flash and all the other automated adjustments would have taken care of that. Car has never been at the stealership since I've owned it.
Thanks in advance for your guidance.

 

you check your A/F mix by login the 02 banks that gives your lamda and you multiple the number logged by 14.7 to get the a/f mixture