I'm not very old, but I've aimed to run my messes as clean as possible. That's why both my trucks are fed a rather excessive amount of air for the amount of power they actually put down. I got into diesels with my 93 dodge, and as it sat before I wrecked the trans was a smallish set of compounds (which is actually the 4th turbo setup I've had on the truck) making 400ish whp that made a light haze at 50psi, and lit up reasonably quick with the afc as tight as it could be (still the afc on the old ve's only controls down to about 12psi), but it made very little preboost smoke, and I got into electronic tuning with my 12 ram that I like to run big singles on (had 4 turbos total on that one too including stock, an s467, s480, and now an s476). I have spent a ton of time trying to tune the smoke out of that truck, and have been mostly successful. I generally have to do a bit of pedalling off the line, but that truck will run a light haze with some seriously strung out injectors, and a cp3 that's struggling to keep up, and it does make right around 600whp. If I hammer on that truck from under the turbo with the converter locked it unfortunately will get pretty smoky, but when you're running a turbo that lights at 1900 or 2100rpm in a 7700lb truck that can be the nature of the beast (if I downshift, and hammer it above that it has no problem staying clean, and making its 50psi).