Solo, this afternoon going up the Conejo grade 101 put my foot down to pass, a plume of black smoke out the back end. Normal or might there be a prob??
Den.

Thats normal!

Even more normal with high HP tunes....:D

Black smoke just means too much fuel, not enough air.

Went up the same grade this morning, on the way to office in
Newbury Park, I put EGR blocker plate & fingers "Stick" on my totally stock truck.

No more black smoke when I get on it!