is this okay? what is wrong?

[zeon35]

it’s hard to tell but i just got a gearhead tune with the 3 bar, k&N intake filter and gh gapped plugs and on my first time reaching close to the rev limiter on a pull i dropped a large black cloud. it hasn’t happened again since but im not sure if this is a worry or not? Thanks

 

[yaycandy]

That’s how you can tell if a turbo car is tuned, it leaves a black cloud usually small. Safer to run rich than to run lean at wot. Lots of temperature very quick, gasoline cools the cylinder. Too hot makes the top ring and possibly others expand very quickly and can cause damage if the end clearance disappears.